ICs for Communications Small PBX (SOHO) Solution Guide for Small PBX (SOHO) Solution Guide 04.99 DS 1 Revision History: Current Version: 04.99 Previous Version: - Page Page (in previous (in current Version) Version) Subjects (major changes since last revision) For questions on technology, delivery and prices please contact the Infineon Technologies Offices in Germany or the Infineon Technologies Companies and Representatives worldwide: see our webpage at http://www.infineon.com ABM(R), AOP(R), ARCOFI(R), ARCOFI(R)-BA, ARCOFI(R)-SP, DigiTape(R), EPIC(R)-1, EPIC(R)-S, ELIC(R), FALC(R)54, FALC(R)56, FALC(R)-E1, FALC(R)-LH, IDEC(R), IOM(R), IOM(R)-1, IOM(R)-2, IPAT(R)-2, ISAC(R)-P, ISAC(R)-S, ISAC(R)-S TE, ISAC(R)-P TE, ITAC(R), IWE(R), MUSAC(R)-A, OCTAT(R)-P, QUAT(R)-S, SICAT(R), SICOFI(R), SICOFI(R)-2, SICOFI(R)-4, SICOFI(R)-4C, SLICOFI(R) are registered trademarks of Infineon Technologies AG i.Gr.Infineon Technologies AG i.Gr. ACETM, ASMTM, ASPTM, POTSWIRETM, QuadFALCTM, SCOUTTM are trademarks of Infineon Technologies AG i.Gr.. All brand or product names, hardware or software names are trademarks or registered trademarks of their respective companies or organizations. Purchase of Infineon Technologies AG i.Gr. I2C components conveys a license under the Philips' I2C patent to use the components in the I2C-system provided the system conforms to the I2C specifications defined by Philips. Edition 04.99 Published by Infineon Technologies AG i. Gr., HL SSC COM, St.-Martin-Strae 53, 81541 Munchen (c) Infineon Technologies AG i. Gr. 1999. All Rights Reserved. Attention please! As far as patents or other rights of third parties are concerned, liability is only assumed for components, not for applications, processes and circuits implemented within components or assemblies. The information describes the type of component and shall not be considered as assured characteristics. Terms of delivery and rights to change design reserved. Due to technical requirements components may contain dangerous substances. For information on the types in question please contact your nearest Infineon Technologies Office. Infineon Technologies AG is an approved CECC manufacturer. Packing Please use the recycling operators known to you. We can also help you - get in touch with your nearest sales office. By agreement we will take packing material back, if it is sorted. You must bear the costs of transport. For packing material that is returned to us unsorted or which we are not obliged to accept, we shall have to invoice you for any costs incurred. Components used in life-support devices or systems must be expressly authorized for such purpose! Critical components1 of the Infineon Technologies AG, may only be used in life-support devices or systems2 with the express written approval of the Infineon Technologies AG. 1 A critical component is a component used in a life-support device or system whose failure can reasonably be expected to cause the failure of that life-support device or system, or to affect its safety or effectiveness of that device or system. 2 Life support devices or systems are intended (a) to be implanted in the human body, or (b) to support and/or maintain and sustain human life. If they fail, it is reasonable to assume that the health of the user may be endangered. Small PBX (SOHO) Table of Contents Page 1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 2 What is a small PBX (SOHO-PBX)? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 3 Questionnaire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 4 4.1 4.1.1 4.1.2 4.1.3 4.2 4.2.1 4.2.2 4.2.3 4.3 4.3.1 4.3.2 4.3.3 4.4 4.4.1 4.4.2 4.4.3 4.5 4.5.1 4.5.2 4.5.3 Solutions for Small PBX systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Low-cost, basic feature small PBX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Low cost, extended feature small PBX . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Small PBX with V.24 dataport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Small PBX with USB/V.24 dataport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18 DSP based small PBX with up to four S-interfaces . . . . . . . . . . . . . . . . . . .19 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 5 5.1 5.2 Future Additions to Existing Concepts . . . . . . . . . . . . . . . . . . . . . . . . . .21 DuSLIC Concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 New S-Transceivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 6 6.1 6.1.1 6.1.2 6.2 6.2.1 6.2.2 6.3 6.3.1 6.3.2 6.4 6.4.1 Application Specific Details on Chipsets . . . . . . . . . . . . . . . . . . . . . . . .23 ISAC-S TE PSB 2186 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 Documentation Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 ISAC-S PEB 2086 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 Documentation Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 IPAC PSB 2115 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 Documentation Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 SBCX PEB 2081 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 Solution Guide 3 04.99 Solution Guide Small PBX Systems 6.4.2 6.5 6.5.1 6.5.2 6.6 6.6.1 6.6.2 6.7 6.7.1 6.7.2 6.8 6.8.1 6.8.2 6.9 6.9.1 6.10 6.10.1 6.10.2 6.11 6.11.1 6.11.2 6.12 6.12.1 6.12.2 6.13 6.13.1 6.13.2 6.14 6.14.1 6.14.2 6.15 6.15.1 Documentation Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 SICOFI-2/-4 TE PSB 2132/34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 Documentation Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 C513A/C513AO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 Documentation Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 C161V/-K/-O/-RI/-PI/-OR/ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 Documentation Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 C165 UTAH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 Documentation Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 C161U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 Documentation Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 DELPHI PEB 20750 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Features of DELPHI-PB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Documentation Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 VIP PEB 20590 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35 Documentation Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 IPAC-X, ISAC-SX and SBCX-X . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36 Documentation Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 DuSLIC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37 Documentation Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Voltage Regulator TLE 4263 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38 Documentation Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 LED LxS269 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Documentation Links . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 7 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 8 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Solution Guide 4 04.99 Solution Guide Small PBX Systems Introduction 1 Introduction This solution guide shows the actual and future solutions for Small Office and Home Office PBX systems (SOHO) using the Infineon Technologies AG i.Gr. chipsets. First a number of questions will lead to the optimized solution for the specific requirements of the small PBX. For each solution the used devices and their interconnection are explained and the benefits outlined. In addition references to additional documentation and tooling are given. But at first it will be explained, what a small PBX is and where it can be applied. 2 What is a small PBX (SOHO-PBX)? In this document a small PBX is referred to a PBX that has up to eight analog POTS interfaces, one or two ISDN basic rate S-interface trunk lines and a small number of subscriber ISDN S-interface lines (0 to 3 lines). A dataport is an optional feature. For more numbers of S-interfaces or a primary rate S-interface, please refer to the "HL Solution Guide for Medium/Large PBX". In principle a small PBX looks like that: S S / T - T r a n s c e iv e r S / T - T r a n s c e iv e r IS A C -S T E IP A C SBCX SBCX t/r Up To 8 t/r S M ic r o c o n t r o lle r P O T S In te rfa c e C 513A C 161 Fam . C 165 U TA H S IC O F I-2 /4 T E D u S L IC D a ta p o rt V .2 4 Figure 1 Solution Guide H S C X -T E 3PA C Principle block diagram of a small PBX 5 04.99 Solution Guide Small PBX Systems Questionnaire 3 Questionnaire 1. How many analog POTS interfaces should be realized in the application? Number of POTS lines: ............ 2. How many ISDN basic rate Sinterface trunk interfaces should be available? 1 trunk interface (continue with step 3 of this questionnaire) >1 trunk interface (please go to Chapter 4.5 for the corresponding concept) 3. Is this PBX capable of handling system telephones (Up interface)? yes (please go to Chapter 4.5 for the corresponding concept) no (continue with step 4) 4. Should the PBX have a dataport (RS-232 or USB)? yes (please continue with step 6 of the questionnaire) no (continue with step 5) 5. How many ISDN basic rate Sinterface subscriber interfaces should be supported by the PBX? 0 subscriber interfaces (please go to Chapter 4.1 for the corresponding concept) 1 subscriber interface (please go to Chapter 4.2 for the corresponding concept) >1 subscriber interfaces (please go to Chapter 4.5 for the corresponding concept) 6. What data interface should be used? RS-232 (please go to Chapter 4.3 for the corresponding concept) USB (please go to Chapter 4.4 for the corresponding concept) USB and RS-232 (please go to Chapter 4.4 for the corresponding concept) Solution Guide 6 04.99 Solution Guide Small PBX Systems Questionnaire The following flow-diagram represents the decision tree. Number of S-if trunk lines >1 1 System Telephones (Up-if)? yes no Type of Dataport RS-232 yes USB and / or RS-232 Dataport (USB or RS-232)? no Number of S-if subscriber lines 0 Chapter 4.3 Figure 2 Solution Guide Chapter 4.4 Chapter 4.1 >1 1 Chapter 4.2 Chapter 4.5 Decision flow - Design Selection 7 04.99 Solution Guide Small PBX Systems Solutions for Small PBX systems 4 Solutions for Small PBX systems 4.1 Low-cost, basic feature small PBX 4.1.1 Description The following PBX is a system with one ISDN basic rate Sinterface on the trunk side and with 2 to 8 analog lines to connect POTS telephones. This system consists of four parts: Sinterface, POTS-interface, microcontroller and power supply. 4.1.2 Block Diagram t/r : : : 2 .. 8 x : : t/r SLIC-x PEB 3265 SLIC-x (2 Channel Programmable Codec Filter/ Low volt. SLIC) : : : : : SLIC-x PEB 3265 SLIC-x (2 Channel Programmable Codec Filter/ Low volt. SLIC) SCI C513 (8-Bit C) PCM Bus parallel C-if NT PSB 2186 S/T (S-Transceiver; D-HDLC) POTS Supply 5V TLE 4263 (Low Dropout Voltage Regulator) Status LEDs AC/DC 220V Figure 3 Solution Guide Low-cost, basic feature small PBX (solution with DuSLIC) 8 04.99 Solution Guide Small PBX Systems Solutions for Small PBX systems DTMF t/r SLIC : DTMF : : : 2 .. 8 x : : PSB 2134 PSB 2132 (4/2 Channel Programmable Codec Filter) SLIC : : : : : DTMF t/r SCI C513 (8-Bit C) PCM Bus parallel C-if NT PSB 2186 S/T (S-Transceiver; HDLC) PSB 2134 PSB 2132 POTS Supply (4/2 Channel Programmable Codec Filter) 5V TLE 4263 (Low Dropout Voltage Regulator) SLIC Status LEDs AC/DC 220V Figure 4 4.1.3 Low-cost, basic feature small PBX (solution with SICOFI) Explanation The blocks in the figure above are now described step-by-step. The S-interface part consists of the physical connection (plug) via the two S-transformers and an optional choke to the S-transceiver. In the S-transceiver the incoming signals are transformed onto the IOM-2 (ISDN Oriented Modular) bus. The IOM bus therefore contains all data that has been received and additional status and control information. The data in the B-channels (2 x 64 kbit/s) is for the payload, i.e. the voice data from the extension telephones. An additional channel, the D-channel (16 kbit/ s) is used for the transmission of the signaling information. This data is sent in HDLC framed packages. Therefore an HDLC controller has to decode these packages and deliver the content to the protocol stack within the software. Both the transfer from the S-interface to IOM and the decoding is done within the ISAC-S TE PSB 2186 (details on chipset in Chapter 6.1). After receiving and decoding a data package, an interrupt is generated and the signaling data that is stored in a buffer can be read by the microcontroller. Within the microcontroller the entire ISDN protocol has to be handled. This is done by a software portion that is usually called protocol stack. For more information on the European DSS1 protocol please refer to the Protocol Fundamental paper "ISDN protocol stack DSS1". Solution Guide 9 04.99 Solution Guide Small PBX Systems Solutions for Small PBX systems The microcontroller block consists not only of the controller alone, but also of ROM and RAM. Usually there is an EPROM used to store the code information. The memory device is connected via the microcontroller bus. In order to store temporary data, an SRAM is needed. Normally the onchip SRAM of the microcontroller is not sufficient, so that an external SRAM is connected to the microcontroller bus. As microcontroller for such a system an 8-bit controller is totally sufficient to handle the protocol stack and the control of codec, SLICs and DTMF receivers. Codec, SLIC and DTMF receiver represent the analog POTS interface of the PBX. The typical procedure of a POTS interface is as follows. First the speech data that is encoded with PCM (either A-law or -law with 8-bit coding) has to be converted into an analog signal. This signal than has to be amplified and brought onto the telephone line. A typical block diagram looks like that: TTX Codec and line adaptation t/r Relay SLIC FSK PCM/IOM DTMF Ringing voltage Figure 5 POTS interface The codec transforms the signal coming from IOM into analog waves. These waves are amplified in the SLIC and also a feeding voltage is brought onto the telephone line. In addition the termination of the line has to be fulfilled, in order to minimize the echo that comes back on the analog telephone line. This is usually called line adaptation. Each country has it's own specification for the impedance of the line termination. These two blocks above, codec and SLIC, have to fulfill the so called BORSCHT functions: Battery, Overvoltage, Ringing, Signaling, Codec, Hybrid, Testing. For the battery feeding the SLIC needs a voltage in the range from -24 to -60V DC. The ringing signal with an amplitude of about 40 to 50Vrms and 25 Hz (depending on the country) is fed via a relay. The relay is controlled by the SLIC. The codec transforms the A/D and D/A conversion according to A- or -law. The information from the analog telephone is called signalling and is realized by the impedance of the t/r line. The detection is handled by the SLIC and transmitted via interrupt to the microcontroller. Because the codec has a four-wire output (Receive=from PCM/IOM to t/r, Transmit=from t/r to PCM/IOM and two times GND) and the tip/ring line is a two-wire interface, a hybrid is necessary to perform the 2-wire to 4-wire conversion. This feature is also included in the SLIC. Test features can be implemented either in the codec and in the SLICs or external relays. Solution Guide 10 04.99 Solution Guide Small PBX Systems Solutions for Small PBX systems In addition to the codec and the SLIC, a DTMF detector is necessary to receive the dialing information coming from the analog telephone set. This DTMF detector is connected to the transmit line in the 4-wire interface between SLIC and codec. As soon as a valid number has been detected, an interrupt is generated and the controller can fetch the data. For some PBX systems with more features, a FSK generator (Frequency Shift Key), also called Caller ID, is applied. With this feature a calling party number can be displayed on the analog telephone set. In order to display the charges of the phone call on the analog telephone set, a teletax generator (TTX), or also called metering pulses generator can be added. It generates 12 kHz or 16 kHz packets, depending on the country specification. In the application described above for the codec/SLIC solution either the DuSLIC chipset or the SICOFI-2/4 TE PSB 2132/PSB 2134 together with a SLIC. The DuSLIC chipset includes one SLICOFI-2 and two high-volage SLICs. The SLICOFI-2 PEB 3265 is a two-channel DSP based codec filter and low-voltage SLIC part with DC and AC line adaption. Further functionality like DTMF recognition, FSK generation, 3-PTY conferencing and line testing is included. For SLICs several different versions are available as e.g. the SLIC-P PEB 4266 with balanced and unbalanced ringing and the SLIC-E PEB 4265 with only balanced ringing, but higher current driving capability. (Further information on the DuSLIC chipset in Chapter 5.1). As for a solution using the traditional codec SLIC combination, the SICOFI-2/4 TE PSB 2132/PSB 2134 combines the requirements for a codec with line adaptation filters. Using this feature, it is possible to connect the SLIC with a fixed network and program via software the country specific termination of the analog line. The SICOFI TE is a 2-channel or 4-channel DSP based solution and consists of only one chip. Further it supplies seven I/O ports per channel to connect the SLIC and the DTMF receiver and control them. This eases the design due to the limited number of port pins of an 8-bit controller. Also test functions like loops and level metering can be done in software. Solution Guide 11 04.99 Solution Guide Small PBX Systems Solutions for Small PBX systems 4.2 Low cost, extended feature small PBX 4.2.1 Description As soon as an additional S-bus is used on the subscriber side, it is recommended to take another approach. 4.2.2 Block Diagram SCI C513A (8-Bit C) S parallel C-if PEB 2081 NT (S-transceiver) PSB 2115 t/r : 2..8 x : t/r SLIC-x PEB 3265 SLIC-x (2 Channel Programmable Codec Filter/ Low volt. SLIC) SLIC-x PEB 3265 SLIC-x (2 Channel Programmable Codec Filter/ Low volt. SLIC) S/T (S-Transceiver, 3x HDLC) IOM-2 Bus POTS Supply 5V TLE 4263 (Low Dropout Voltage Regulator) AC/DC Status LEDs 220V Figure 6 Solution Guide Low cost, extended feature small PBX (using DuSLIC) 12 04.99 Solution Guide Small PBX Systems Solutions for Small PBX systems SCI C513A (8-Bit C) S parallel C-if PEB 2081 NT (S-transceiver) PSB 2115 DTMF t/r : 2..8 x : SLIC : : DTMF t/r S/T (S-Transceiver, 3x HDLC) PSB 2134 PSB 2132 (4/2 Channel Programmable Codec Filter) IOM-2 Bus POTS Supply 5V TLE 4263 (Low Dropout Voltage Regulator) SLIC Status LEDs AC/DC 220V Figure 7 4.2.3 Low cost, extended feature small PBX (using SICOFI) Explanation On the trunk side the IPAC PSB 2115 is used. This device consists of an S-interface and three HDLC controllers. One of these HDLC controllers is used to handle the D-channel coming from the Central Office. On the subscriber side, a second S-transceiver SBCX PEB 2081 is mounted. The D-channel handling going to the subscribers is handled by the second HDLC controller of the IPAC PSB 2115. The two B channels of the trunk interface are located on IOM channel 0 of the IOM-2 interface, that is operated with 1.536 MHz coming from the IPAC. The two B channels of the subscriber interface are set to IOM channel 1 by pinstrapping of the SBCX PEB 2081. Using either the DuSLIC chipset or the SICOFI-2/4-TE a two to eight analog POTS interfaces can be connected to the system. More detailed information on DTMF and SLIC circuitry can be found in Chapter 4.1.3. Solution Guide 13 04.99 Solution Guide Small PBX Systems Solutions for Small PBX systems The following paragraphs show how switching is accomplished. Subscriber S-interface initiates external call As soon as the received D channel package on IOM channel 1 is received by the controller and recognized as an external call, the occupied B channel of the subscriber interface is switched to channel 0 by sending a monitor message to the SBCX. Subscriber S-interface initiates internal call If an internal call is detected, the SICOFI-TE is programmed via the serial controller interface (SCI), so that the appropriate timeslot is on the S-transceiver B channel on IOM channel 1. Analog POTS phone initiates external call The SICOFI-TE is programmed that the appropriate timeslot shows to IOM channel 0. Subscriber S-interface B1 initiates external call while analog POTS phone has active call on B1 of the trunk interface Normally the B1 of the subscriber interface would use the B1 channel of the trunk interface (timeslot 0). In this case the B1 channel is already occupied, and cannot be moved to another slot. The SBCX cannot switch to another B channel. Therefore the auxiliary PCM interface of the IPAC is used. The PCM interface is hardwired to the IOM interface. Via the internal switching, the PCM slot, e.g. timeslot 4 (=B1 of channel 1 of the SBCX), is mapped to B2 of the trunk interface. As alternative it is also possible to assign only B2 via the protocol, if only B2 is available. Subscriber S-interface calls subscriber S-interface Via a monitor command, the SBCX is programmed to close a loop for the two B channels and interchange the downstream and upstream direction on one of the channels. This way all connections for this small PBX with extended features can be handled without an additional switching device. 4.3 Small PBX with V.24 dataport 4.3.1 Description As soon as the PBX should also have Terminal Adaptor (TA) features, it is necessary to use a more powerful controller, in order to handle the transmission of data between the computer interface and the ISDN S-interface. This chapter and Chapter 4.4 show how such a system could look like. Solution Guide 14 04.99 Solution Guide Small PBX Systems Solutions for Small PBX systems 4.3.2 Block Diagram V.24 SCI C161O (16-bit C) parallel C-if NT t/r : 2..8 x : t/r SLIC-x PEB 3265 PSB 2115 (S-Transceiver, 3x HDLC) SLIC-x (2 Channel Programmable Codec Filter/ Low volt. SLIC) SLIC-x PEB 3265 SLIC-x (2 Channel Programmable Codec Filter/ Low volt. SLIC) S/T IOM-2 Bus POTS Supply 5V TLE 4263 (Low Dropout Voltage Regulator) Status LEDs AC/DC 220V Figure 8 Small PBX with V.24 Dataport (using DuSLIC) V.24 SCI C161O (16-bit C) parallel C-if NT PSB 2115 DTMF t/r : 2..8 x : SLIC : : DTMF t/r SLIC S/T (S-Transceiver, 3x HDLC) IOM-2 Bus POTS Supply PSB 2134 (4 Channel Programmable Codec Filter) 5V TLE 4263 (Low Dropout Voltage Regulator) Status LEDs AC/DC 220V Figure 9 Solution Guide Small PBX with V.24 Dataport (using SICOFI) 15 04.99 Solution Guide Small PBX Systems Solutions for Small PBX systems 4.3.3 Explanation The 16-bit controller C161 family (e.g. C161-V/-K/-O/-RI/-PI) is able to transfer the data coming from the PC via the serial asynchronous interface (RS-232;V.24) to the IPAC PSB 2115. The later is handling the trunk S-interface with its S-transceiver and one D-channel HDLC controller. The two spare HDLC controllers of the IPAC are used to do the HDLC framing of the data from the PC via V.24 onto ISDNThe datarate on the UART interface can be either 115 kbit/s for one B channel or 230 kbit/s for two B-channel transmission. The B-channel protocols are handled within the PC. Either the DuSLIC chipset or the SICOFI-TE with either two or four channels represents an optional analog interface and enables this system to have two to eight analog interfaces. 4.4 Small PBX with USB/V.24 dataport 4.4.1 Description In order to obtain also an USB interface, an USB controller has to be used. As 16-bit controller with USB, the C165 UTAH is the best and most flexible choice. Solution Guide 16 04.99 Solution Guide Small PBX Systems Solutions for Small PBX systems 4.4.2 Block Diagram V.24 C165UTAH SCI USB S (16-bit C, IOM, 4x HDLC) PEB 2081 NT (S-transceiver) t/r : 2..8 x : t/r S/T PEB 2081 (S-transceiver) SLIC-x PEB 3265 SLIC-x (2 Channel Programmable Codec Filter/ Low volt. SLIC) SLIC-x PEB 3265 (2 Channel Programmable Codec Filter/ Low volt. SLIC) SLIC-x Status LEDs IOM-2 Bus POTS Supply 5V TLE 4263 (Low Dropout Voltage Regulator) AC/DC 220V Figure 10 Solution Guide Small PBX with USB/RS-232 dataport (using DuSLIC) 17 04.99 Solution Guide Small PBX Systems Solutions for Small PBX systems V.24 C165UTAH SCI USB S (16-bit C, IOM, 4x HDLC) PEB 2081 NT (S-transceiver) S/T PEB 2081 (S-transceiver) DTMF t/r : 2..8 x : SLIC : : DTMF t/r SLIC PSB 2134 (4 Channel Programmable Codec Filter) IOM-2 Bus POTS Supply 5V TLE 4263 (Low Dropout Voltage Regulator) Status LEDs AC/DC 220V Figure 11 4.4.3 Small PBX with USB/V.24 dataport (using SICOFI) Explanation The C165 UTAH includes besides a C16x core one USB interface conform to the PC 98 specification. As additional feature the C165 UTAH has one IOM interface and four full-duplex HDLC controllers. Therefore it is possible to control two S-transceivers (SBCX PEB 2081) on trunk and subscriber side, and additionally allow a data transfer via USB or RS-232, that is framed by the remaining two HDLC controllers. This way the maximum amount of flexibility is obtained. As described above the analog interface is realized by either the DuSLIC chipset or the SICOFI-TE, connected via the serial controller interface. In spite of using up to two S-interfaces and up to eight analog interfaces, no PLL is necessary. The IOM interface is supplied by the trunk line S-transceiver with 1.536 MHz. Solution Guide 18 04.99 Solution Guide Small PBX Systems Solutions for Small PBX systems 4.5 DSP based small PBX with up to four S-interfaces 4.5.1 Description As soon as more S-interfaces are provided or more than one trunk line S-interface is used, another approach is more advantageous. With the DELPHI/VIP concept small to midrange PBX systems can be built. 4.5.2 Block Diagram NT S : 3x : VIP PEB 20590 : S IOM-2000 DELPHI-PB PEB 20571 t/r : 2..8 x : S/T C161U PCM / IOM-2 SLIC-x SLIC-x SLIC-x t/r par. C-if SLIC-x SLICOFI-2 PEB 3265 SCI V.24 POTS Supply SLICOFI-2 PEB 3265 USB 5V TLE 4263 (Low Dropout Voltage Regulator) AC/DC Status LEDs 220V Figure 12 Solution Guide DSP based small PBX with up to four S-interfaces (DuSLIC solution) 19 04.99 Solution Guide Small PBX Systems Solutions for Small PBX systems NT S : 3x : VIP PEB 20590 : S IOM-2000 DELPHI-PB PEB 20571 : 2..8 x : S/T t/r C161U PCM / IOM-2 SLIC SLIC SLIC t/r par. C-if SCI SICOFI-TE PSB 2134 V.24 POTS Supply USB 5V TLE 4263 (Low Dropout Voltage Regulator) SLIC AC/DC Status LEDs 220V Figure 13 4.5.3 DSP based small PBX with up to four S-interfaces (SICOFI solution) Explanation The DELPHI/VIP concept consists of two devices, one is the DELPHI PEB 20571, a telecom DSP that handles all digital tasks, including HDLC controllers, microcontroller interface, DSP routines, the digital part of S- and Up-transceivers, and many more. The second device is the VIP, PEB 20590. This device contains four S-transceivers (that can also be switched to work as four Up-transceivers) and additional four Up-transceivers. In this application only the four S-transceivers are used. The two devices DELPHI and VIP are connected via a new serial bus, the IOM-2000 bus, that has a higher bitrate. Up to three VIPs can be connected to one DELPHI. The four S-interfaces of the VIP can be distributed freely either on the subscriber or on the trunk interface. The necessary PLL is included in the DELPHI and each S-transceiver can be programmed separately into LT-T (trunk line) or LT-S (subscriber line) mode. As described above the analog interface consists either of the DuSLIC chipset or the SICOFI-TE and SLICs. As difference now the DTMF receivers can be realized at the SICOFI solution within the DSP of the DELPHI-PB. Depending on the dataport that should be realized, two controllers can be connected. For sole RS-232/V.24 operation the C161PI is sufficient to shuffle the data from the V.24 interface to the DELPHI, that does HDLC framing and sending it via the IOM-2000 bus to the trunk line interface. As soon as an optional USB interface should be provided, the software compatible C161U can be used. Solution Guide 20 04.99 Solution Guide Small PBX Systems Future Additions to Existing Concepts 5 Future Additions to Existing Concepts As an outlook into the future of small PBX systems, the following concepts and devices should be described shortly. 5.1 DuSLIC Concept From July 1999 on, a new concept for the analog interface will remove the SICOFI-TE and mount the DuSLIC, consisting of SLICOFI-2 and SLIC-x. TTX Codec and line adaptation t/r Relay SLIC FSK PCM/IOM DTMF Ringing voltage Figure 14 Common realization of an analog POTS interface In all PBX systems above the analog line interface was shown like in Figure 14. All the functionality shown in this figure can now be realized with the DuSLIC concept, consisting of one SLICOFI-2 handling the low voltage part and two SLIC-x handling the high voltage part. The SLICOFI-2 is a two channel DSP based codec filter, that handles the A/D conversion, the line adaptation, the DTMF receiver and sender, the FSK generation, TTX pulses generation, line test features, Three-Party-Conferencing and more. The analog high voltage part is realized by the SLIC-x. There are several types of SLICs available, that show the same interface and pinning, but are made for different requirements, e.g. balanced or unbalanced ringing and power consumption. Figure 15 shows how the entire solution for two lines looks like. As a special feature of the DuSLIC concept the Three-Party-Conferencing feature should be mentioned for the PBX systems. Without using external components it is possible to mix three lines together and control the gain of each line. It does not matter where the three callers are connected to, both PCM/IOM interface and the analog lines are supported and can be programmed individually for each channel. Solution Guide 21 04.99 Solution Guide Small PBX Systems Future Additions to Existing Concepts Original solution: TTX Relay SLIC FSK DTMF SICOFI-2 TTX Relay PCM/IOM SLIC FSK DTMF Ring Voltage New DuSLIC solution: SLIC-E/P SLICOFI-2 SLIC-E/P Figure 15 5.2 PCM/IOM selectable Transition from SICOFI to SLICOFI New S-Transceivers Also a short overview of the new S-transceivers should be given. The IPAC-x, ISAC-SX and SBCX-X are the next generation of the devices mentioned above (more details in Chapter 6). The ISAC-SX consists of one S-transceiver and one HDLC controller for D-channel data and a rudimentary B-channel HDLC controller in order to achieve remote downloading. The SBCX-X has one single S-transceiver. The IPAC-x integrates one S-transceiver, one D-channel HDLC controller and two B-channel HDLC controllers for data access. The new generation of S-transceivers is more flexible than the ISAC-S PEB 2086 or the SBCX PEB 2081. Now it is possible to select the timeslots individually for each B channel or provide IDSL functionality (144 kbit/s). They now support 3,3 V supply voltage, a new monitor and C/I code handler and several microcontroller interfaces. Solution Guide 22 04.99 Solution Guide Small PBX Systems Application Specific Details on Chipsets 6 Application Specific Details on Chipsets 6.1 ISAC-S TE PSB 2186 The PSB 2186 ISAC (R) -S TE implements the four-wire S/T interface used to link voice/ data terminals to an ISDN. The PSB 2186 combines the functions of the S-Bus Interface Circuit (SBC: PEB 2080) and the ISDN Communications Controller (ICC: PEB 2070) on one chip. The component switches B- and D-channels between the S/T and the ISDN Oriented Modular (IOM (R)) interfaces, the latter being a standard backplane interface for the ISDN-basic access. The device provides all electrical and logical functions of the S/T interface, such as: activation/deactivation, mode dependent timing recovery and D-channel access and priority control. The HDLC packets of the ISDN D-channel are handled by the ISAC-S which interfaces them to the associated microcontroller. In one of its operating modes the device offers high level support of layer-2 functions of the LAPD protocol. 6.1.1 * * * * * * * * * * * * * * * * Features Terminal IOM (R) -2 terminal specific version of the PEB 2086 Pin and software compatible to PEB 2086 Full duplex 2B+D S/T interface transceiver Conversion of the frame structure between the S/T interface and IOM-2 Receive timing recovery D-channel access control Activation and deactivation procedures with automatic wake-up from power-down state Access to S and Q bits of S/T interface Adaptively switched receive thresholds Support of LAPD protocol FIFO buffer (2 x 64 bytes) for efficient transfer of D-channel packets 8-bit microprocessor interface, multiplexed or non-multiplexed Serial interface: IOM-2 interface including bit clock and strobe signal Implementation of IOM-2 MONITOR and C/I-channel protocol to control peripheral devices Microprocessor access to B- and intercommunication-channels Watchdog timer Solution Guide 23 04.99 Solution Guide Small PBX Systems Application Specific Details on Chipsets 6.1.2 Documentation Links - ISDN Subscriber Access Controller for Terminals (ISAC-S TE, PSB 2186), User's Manual 10.94 - ISDN Subscriber Access Controller for Terminals (ISAC-S TE, PSB 2186 V1.1), Delta Sheet 06.96 - ISDN Subscriber Access Controller for Terminals (ISAC-S TE, PSD 2186 V1.1), Delta Sheet 04.97 - http://www.siemens.de/semiconductor/products/ics/33/isac_ste.htm 6.2 ISAC-S PEB 2086 The PEB 2086 ISAC (R) -S implements the four-wire S/T interface used to link voice/data terminals to ISDN. The PEB 2086 combines the functions of the S-Bus Interface Circuit (SBC: PEB 2080) and the ISDN Communications Controller (ICC: PEB 2070) on one chip. The component switches B and D channels between the S/T and the ISDN Oriented Modular (IOM (R)) interfaces, the latter being a standard backplane interface for the ISDN basic access. The device provides all electrical and logical functions of the S/T interface, such as: activation/deactivation, mode dependent timing recovery and D channel access and priority control. The HDLC packets of the ISDN D channel are handled by the ISAC-S which interfaces them to the associated microcontroller. In one of its operating modes the device offers high level support of layer-2 functions of the LAPD protocol. 6.2.1 * * * * * * * * * * * * * Features Full duplex 2B + D S/T interface transceiver Conversion of the frame structure between the S/T interface and IOM Receive timing recovery according to selected operating mode Multiframe synchronization D-channel access control Activation and deactivation procedures, with automatic wake-up from power-down state Access to S and Q bits of S/T interface Adaptively switched receive thresholds Frame alignment with absorption of phase wander in NT2 network side applications Support of LAPD protocol FIFO buffer (2 64 bytes) for efficient transfer of D-channel packets 8-bit microprocessor interface, multiplexed or non-multiplexed Serial interfaces: IOM-1, SLD, SSI, IOM-2 Solution Guide 24 04.99 Solution Guide Small PBX Systems Application Specific Details on Chipsets * Implementation of IOM-1/IOM-2 MONITOR and C/I channel protocol to control peripheral devices * Microcontroller access to B-channels and intercommunication channels * B-channel switching * B-channel mapping on SSI-interface * Watchdog timer * Test loops * Low power consumption: standby 8 mW, active 80 mW 6.2.2 - - - - - - Documentation Links ISDN Subscriber Access Controller (ISAC-S, PEB 2086), User's Manual 10.94 ISDN Subscriber Access Controller (ISAC-S, PEB 2086 V1.1), Errata Sheet 10.95 ISDN Subscriber Access Controller (ISAC-S, PED 2086 V1.1), Delta Sheet 11.97 ISDN Subscriber Access Controller (ISAC-S, PEB 2086 V1.4), Delta Sheet 01.98 ISDN Subscriber Access Controller (ISAC-S, PED 2086 V1.4), Delta Sheet 01.98 http://www.siemens.de/semiconductor/products/ics/33/isac_s.htm 6.3 IPAC PSB 2115 The ISDN PC Adapter Circuit IPAC PSB 2115 integrates all necessary functions for a host based ISDN access solution on a single chip. It includes the S-transceiver (Layer 1), an HDLC controller for the D-channel and two protocol controllers for each B-channel. They can be used for HDLC protocol or transparent access. The system integration is simplified by several host interface configurations selected via pin strapping. They include multiplexed and demultiplexed interface options as well as the optional indirect register access mechanism which reduces the number of necessary registers in the address space to 2 locations. The IPAC combines the functions of the ISDN Subscriber Access Controller (ISAC-S PEB 2086) and the High-Level Serial Communications Controller Extended for Terminals (HSCX-TE PSB 21525) providing additional features and enhanced functionality. The FIFO size of the B-channel buffers is 2x64 bytes per channel and per direction. The S-transceiver supports other terminal relevant operation modes like line termination subscriber side (LT-S) and line termination trunk side (LT-T). A multi-line ISDN solution to support both S and U (2B1Q together with IEC-Q/NTC-Q) line coding is simplified as well as multi-line solution with up to 3 S-interfaces. An auxiliary I/O port has been added with interrupt capabilities on two input lines. These programmable I/O lines may be used to connect a DTMF receiver or other peripheral components to the IPAC which need software control or have to forward status information to the host. Peripheral data controllers can transfer data on a PCM interface which is mapped into the B-channels on the IOM-2 interface. Three programmable LED Solution Guide 25 04.99 Solution Guide Small PBX Systems Application Specific Details on Chipsets outputs can be used to indicate certain status information, one of them is capable to indicate the activation status of the S-interface automatically. 6.3.1 * * * * * * * * * * * * * * * * * Features Integrates S-transceiver, D-channel, B-channel protocol controller Replaces solutions based on ISAC-S TE PSB 2186 and HSCX-TE PSB 21525 Software reset (required for Windows95) Programmable I/O interface with 2 interrupt inputs PCM interface for non IOM-2 compatible peripheral data controllers with switching functionality Programmable timer (1 ... 63 ms) for continuous or single interrupts Reduced register address space due to indirect address mode option 3 programmable LED outputs, one can indicate S bus activation status automatically 8-bit multiplexed or demultiplexed bus interface, Siemens/Intel or Motorola P interface Single chip host based ISDN solution Various types of protocol support depending on operating mode (Non-auto mode, transparent mode) Efficient transfer of data blocks from/to system memory by DMA or interrupt request Enlarged FIFO buffers (2x64 byte) per B-channel and per direction S-transceiver with TE, LT-S and LT-T modes (easy realization of connection of several IPACs due to 1.536 MHz output) D-channel FIFO buffers with 2x32byte D-channel access mechanism in all modes D-channel priority handler on IOM-2 for intelligent NT applications 6.3.2 Documentation Links - ISDN PC Adapter Circuit (IPAC, PSB 2115 Version 1.1), Product Overview 09.96 - ISDN PC Adapter Circuit (IPAC, PSB 2115 Version 1.1), Data Sheet 11.97 - ISDN PC Adapter Circuit (IPAC, PSB 2115 Version 1.1 and PSF 2115 Version 1.1), Errata Sheet 09.98 - ISDN PC Adapter Circuit (IPAC PSB 2115 Version 1.2 and PSF 2115 Version 1.2), Delta Sheet 09.98 - http://www.siemens.de/semiconductor/products/ics/33/ipac.htm 6.4 SBCX PEB 2081 The PEB 2081 S/T Bus Interface Circuit Extended (SBCX) implements the four-wire S/ T-interface used to link voice/data ISDN terminals, network terminators and PABX trunk lines to a Central Office. Solution Guide 26 04.99 Solution Guide Small PBX Systems Application Specific Details on Chipsets The SBCX provides the electrical and functional link between the analog S/T-interface according to ITU recommendation I.430, ETS 300 012 and T1.605 Basic User Network Interface Specification respectively, and the ISDN Oriented Modular interface Rev. 2 (IOM(R)-2). 6.4.1 Features * Full duplex 2B+D S/T-interface transceiver according to the following specifications: ETS 300 012, ANSI T1.605 * 192 kbit/s transmission rate * Pseudo-ternary coding with 100 % pulse width * Activation and deactivation procedures * Extended loop-length up to 2 km * Handling of commands and indications contained in the IOM(R)-2 C/I channel for activation, deactivation and testing * Switching of test-loops * Fully compliant NT2 trunk mode including multipoint operation * Frame alignment with absorption of phase wander in NT2 network side applications * D channel access control, also in trunk application * Access to S and Q bits of S/T-interface (S1, S2 and Q channel) * Software controlled maintenance interface (I/O ports) * Switching of test loops * Supported Operation Modes TE : Terminal Mode NT : Network termination connected to IEC-Q LT-T : Trunk mode in private exchange LT-S : Line termination in public or private exchanges 6.4.2 Documentation Links - http://www.siemens.de/semiconductor/products/ics/33/3303.htm - SBCX PEB 2081 v3.4 User's Manual 11.96 - Errata Sheet PEE/PEA 03.97 6.5 SICOFI-2/-4 TE PSB 2132/34 The Signal Processing Codec Filter for terminal applications PSB 2132/4 SICOFI2/4-TE is a special derivative of the Infineon Technologies programmable codec-filter-IC family designed for terminal applications featuring two or four POTS interfaces. It can be directly connected to the IOM-2 interface in terminal mode running at 1.536 MHz clock rate. PCM data is transferred using the bit clock signal at 768 kHz. Programming of internal registers is done via the serial microcontroller interface. Solution Guide 27 04.99 Solution Guide Small PBX Systems Application Specific Details on Chipsets Only two external capacitors per channel are needed to complete the functionality of the PSB 2132/4. The internal level accuracy is based on a very accurate bandgap reference. The frequency behavior is mainly determined by digital filters, which do not have any fluctuations. As a result of the new ADC- and DAC- concepts linearity is only limited by second order parasitic effects. Although the device works only from one single 5 V supply there is a very good dynamic range available. The PSB 2132/4 is a DSP based codec which allows the integration of filters and tone generators besides the regular A- or -law conversion. In addition it integrates I/O extensions to the microcontroller and provides the necessary I/O pins to control the SLIC or discrete SLIC replacement. Interrupts are generated to the microcontroller if changes (e.g. Off-Hook detection) have been occurred. The PSB 2132/4 provides a ring frequency output pin. This pin has a programmable clock frequency to meet the European and US ringing frequency requirements using only one external divider. The IOM-2 data lines DU and DD can both be used for transmitting or receiving voice data. The position of each receive and transmit timeslot is programmable. Internal communication between analog ports is supported by programming each channel to the same timeslot but reversing the data lines. Thus the transmitted PCM data is transmitted by one port and received by the second port via the same timeslot. An additional IC for switch matrix is eliminated. The PSB 2132/4 is specially of interest for applications which need to serve different country specific characteristics on the POTS interface. Since all filters are programmable, adaptation to these country specific requirements may be done only by software parameters using the same hardware. 6.5.1 Features * * * * * * * * * * Single chip programmable CODEC and FILTER to handle two or four POTS interfaces IOM-2 compatible interface (1.536 MHz DCL, 768 kHz Bit clock) Internal communication between POTS interfaces Programmable I/O lines for signaling information per channel Programmable ring generator output Two programmable tone generators per channel Serial microcontroller interface Digital signal processing technique High analog driving capability (300 Ohms) for direct driving of transformers Programmable digital filters to adapt the transmission behavior especially for - AC impedance matching - transhybrid balancing - frequency response - gain - A/-law conversion * Single 5 V power supply Solution Guide 28 04.99 Solution Guide Small PBX Systems Application Specific Details on Chipsets * Advanced test capabilities 6.5.2 Documentation Links - Two/Four Channel Codec Filter for Terminal Applications (SICOFI-2/4-TE PSB 2132/ 34 Version 1.2) Data Sheet 09.97 - Two/Four Channel Codec Filter for Terminal Applications (SICOFI-2/4-TE PSB 2132/ 34 Version 1.2) Errata Sheet 09.97 - Two/Four Channel Codec Filter for Terminal Applications (SICOFI-2/4-TE PSB 2132/ 34 Version 1.4) Delta Sheet 04.98 - http://www.siemens.de/semiconductor/products/ics/33/sico2_te.htm - http://www.siemens.de/semiconductor/products/ics/33/sico4_te.htm 6.6 C513A/C513AO The C511, C511A, C513 and C513A are low cost members of the Infineon Technologies C500 family of 8-bit microcontroller which is compatible to the 80C51/C52 standard architecture. A wide range of tools such as HLL (High-Level-Language)-compilers, debuggers and emulators are available. Among other segments the low power design makes the C511/C513 family ideal for telecom and consumer applications as well as automotive or industrial solutions. Note: For new designs, the C513AO should be used. 6.6.1 * * * * * * * * * * * * * * * * Features Fully compatible to standard 8051 microcontroller Up to 16 MHz operating frequency - 750 ns instruction cycle time @16 MHz 16 K bytes of on-chip OTP memory (C513A-2E and C513AO-2E only) 16 K bytes of on-chip ROM memory (C513AO-2E only) 256 byte on-chip RAM 256 byte on-chip XRAM Four 8-bit digital I/O ports Three 16-bit timers/counters (timer 2 with Up/Down and 16-bit auto-reload features) Full duplex serial interface (USART) Synchronous Serial Channel (SSC) Seven interrupt sources with two priority levels On-chip emulation support logic (Enhanced Hooks) Programmable 15-bit Watchdog Timer (C513AO only) Oscillator Watchdog (C513AO only) Fast Power On Reset (C513AO only) Power Saving Modes - Slow-down mode (C513AO only) - Idle mode Solution Guide 29 04.99 Solution Guide Small PBX Systems Application Specific Details on Chipsets - Software power-down mode with optional wake up capability 6.6.2 Documentation Links - C511, User's Manual 06.96 (http://www.siemens.de/semiconductor/products/ics/34/ u511.htm) - C511, Data Sheet 06.96 (http://www.siemens.de/semiconductor/products/ics/34/ d511.htm) - http://www.siemens.de/semiconductor/products/ics/34/c511.htm Solution Guide 30 04.99 Solution Guide Small PBX Systems Application Specific Details on Chipsets 6.7 C161V/-K/-O/-RI/-PI/-OR/ These members of the C166 family offer all benefits of a full 16-bit controller at the average price of an 8-bit controller. The C161 product range is focused on price sensitive applications such as in consumer products. Grouped around the 16MHz C166 core a variety of basic peripherals have been chosen for optimal product and system costs. The C161PI is the 3,3V version of the C161RI. The C161OR is the 3,3V version of the C161O with additional power management. 6.7.1 * * * * * * * * * * * * * * * * * * * * * * * * * Features High Performance 16-bit CPU with 4-stage pipeline 125 ns Instruction Cycle Time at 16 MHz CPU Clock 625 ns Multiplication (16 x 16 bit), 1,25 s Division (32/16 bit) Clock Generation via Prescaler or via Direct Clock Input Enhanced Boolean Bit Manipulation Facilities Additional Instructions to Support HLL and Operating Systems Register-Based Design with Multiple Variable Register Banks Single-Cycle Context Switching Support Up to 4 MBytes Linear Address Space for Code and Data 1 KBytes On-Chip IRAM (C161OR only) 2 KBytes On-Chip XRAM (C161PI only) Programmable External Bus Characteristics for Different Address Ranges 8-bit or 16-bit External Data Bus Multiplexed or Demultiplexed External Address/Data Buses (C161V provides MUX Bus only) 1024 Bytes On-Chip Special Function Register Area Idle and Power Down Modes 8-Channel Interrupt-Driven Single-Cycle Data Transfer Facilities via Peripheral Event Controller (PEC) 16-Priority-Level Interrupt System with 20 Sources (14 Sources on C161V) Multi-Functional General Purpose Timer Units with up to five 16-bit Timers Two Serial Channels (Synchronous/Asynchronous and High-Speed-Synchronous) Programmable Chip-Select Signals (not on C161V) Programmable Watchdog Timer Up to 63 General Purpose I/O Lines Supported by a large Range of Development Tools including C-Compilers, Makro-Assembler Packages, Real-Time Operating Systems, Emulators, Evaluation Boards, HLL-Debuggers, Simulators, Logic Analyzers Disassemblers, Programming Boards On-Chip Bootstrap Loader (not on C161V) Solution Guide 31 04.99 Solution Guide Small PBX Systems Application Specific Details on Chipsets 6.7.2 Documentation Links - C161RI, Product Overview 05.97 (http://www.siemens.de/semiconductor/products/ ics/34/pdf/p161ri.pdf) - C161RI, Data Sheet 01.98 Advance Information (http://www.siemens.de/ semiconductor/products/ics/34/pdf/d161ri.pdf) - C161V/-K/-O, User's Manual 12.97 (http://www.siemens.de/semiconductor/products/ ics/34/u161.htm) - http://www.siemens.de/semiconductor/products/ics/34/c161.htm Note: The C161RI is not for new designs. 6.8 C165 UTAH The C165 UTAH, as an Embedded C166 core with Universal Serial Bus (USB) Interface and Terminal Adapter (TA) supporting hardwired HDLC formatter, will be a new derivative of the Infineon Technologies SAB C166 family of full-featured single-chip CMOS microcontrollers using C7NA/H technology. This new device fits all needs for todays low-cost design implementations with or without USB support of small PBXs, full-featured ISDN-Terminal Adapters and ISDN-Modems for LAN-to-WAN interworking at a maximum ratio of performance and flexibility to cost. The embedded 16-bit C166 core excels in both high performance and low cost. The architecture provides maximum flexibility and performance for all kinds of value-added software features by providing hardwired level-1 support for USB, IOM-2 and HDLC. Therefore the most significant part of the CPU performance can be used e.g. for protocol interworking between USB and ISDN or PBX features such as Answering Machines, Comfort Noise generation and Local Calling. Note: This chip is not yet available. Engineering samples of the C165 UTAH will be available in June, 1999. 6.8.1 Features * C166 Static Core with Peripherals including: - Peripheral Event Controller (PEC) for 8 independent DMA channels - 16 Dynamically Programmable Priority-Level Interrupt System - Five External Interrupts - SW-configurative Input/Output (I/O) Ports, some with Interrupt Capabilities - 8-Bit or 16-Bit External Data Bus - Multiplexed or Demultiplexed Address/Data Bus - Up to 16-Mbyte Linear Address Space for Code and Data - Five Programmable Chip-Select Lines with Wait-State Generator Logic - On-Chip 3,074-Byte Dual-Port IRAM Solution Guide 32 04.99 Solution Guide Small PBX Systems Application Specific Details on Chipsets - - - - - - * * * * * * * * * On-Chip 1,024-Byte Special Function Register Area On-Chip PLL with Output Clock Signal Five Multimode General Purpose Timers On-Chip Programmable Watchdog Timer Glueless Interface to EPROM, Flash EPROM, and SRAM Low-Power Management Supporting Idle-, Power-Down- and Sleep-Mode and additional CPU clock slow-down mode - USART interface with Auto Baud Rate detection up to 230,400 kbps - High speed Serial Synchronous Channel Interface (SSC) with ALIS-3.0 and AC97 compatibility. USB Interface including: - USB Specification 1.1 compliant - 12 Mbit/s Full-Speed Mode - Seven SW-configurable Endpoints, in addition to the bidirectional Control Endpoint 0 - Each non-Control Endpoint can be either Isochronous, Bulk or Interrupt - < 500uA suspend current and <500mA operating current in USB bus-powered mode @ 5V - Autonomous DMA Transfer by On-Chip EPEC ISDN Terminal Adapter Features including (C165 UTAH only): - Four Independent Full-Duplex HDLC Controllers - IOM-2 (also known as General Circuit Interface) - MON and CI0/CI1-Handler - Two D-Channels (Local plus ISDN Layer-2, i.e. LAPD) - Two B-Channels Supported - Concatenated 2B+D channel Support - Two Intercommunication Channels IC1, IC2 - D-Channel Access Control to first IOM channel-0 by TIC/BAC and S/G - CDA Channel Access to individual IOM-2 channels by SW On-Chip PLL for CPU and USB clock generation Variable oscillator clock input frequency On-Chip Debug Support (OCDS) JTAG Boundary Scan Test Support according to IEEE 1149.1 Static 0..40 MHz Core Design 3.3V Single Supply Voltage 5V (TTL-) Tolerant I/Os 6.8.2 Documentation Links - SAB C165 UTAH Product Brief 10.98 Solution Guide 33 04.99 Solution Guide Small PBX Systems Application Specific Details on Chipsets 6.9 C161U The C161 U features the same peripherals and the same core as the SAB-C165 UTAH. The only difference is the fact that the C161U does not have HDLC controllers and an IOM interface integrated on chip. Note: This chip is not yet available. Engineering samples of the C161 U will be available in June, 1999. 6.9.1 Documentation Links no documentation available up to now 6.10 DELPHI PEB 20750 DELPHI is a part of the Infineon Technologies Telecom DSP product line , addressing a broad range of telecom applications. Together with the transceiver part VIP PEB 20590, this optimized chip-set provides the functionality required for building line cards and small PBXs. The DELPHI integrates a high performance DSP core, supporting telecom features like switching, signaling control, and layer-1 control. It also provides a programmable Master/ Slave clock generator with two PLLs, a parallel P interface, and a DMA interface The VIP contains UPN and S/T transceivers for up to 8 layer-1 subscriber or trunk lines. Key applications of the DELPHI include: * Line card and PBX controller for up to 40 ISDN or 32 analog subscribers with integrated switching and signaling functionality. The PBX version (DELPHI-PB) provides a DSP programming option for on-chip implementations of user PBX software. * Up to 32 full-duplex HDLC controllers for ISDN D- and B-channels (16 or 64 kbit/s) Optimized firmware solutions guarantee a maximum of performance using the DELPHI hardware and DSP power in each application. 6.10.1 Features of DELPHI-PB * Programmable 16-bit 62 MIPS DSP core OAK + for: - Transceivers control: layer-1 ICs on IOM-2000 or IOM-2 interfaces, - Switching, - Signaling (user or application specific functionality) * On-chip memory: - 4K program RAM - 2K data RAM * New generation IOM-2000 interface supporting 24layer-1 subscriber ports, configurable to Upn or S/T standard Solution Guide 34 04.99 Solution Guide Small PBX Systems Application Specific Details on Chipsets * 2 IOM-2 (GCI) interfaces with 32 time slots (2 x 2.048 Mbit/s) supporting up to 16 ISDN subscribers or 16 analog subscribers * 4 PCM highways with up to 2.048 Mbit/s each (32 TS) * 32HDLC controllers for ISDN D- or B-channels (at 16 kbit/s or 64 kbit/s) * Serial communication controller supporting a data rate of up to 16.384 Mbit/s * A-/-law conversion for all B-channels * Firmware for DSP work load measurement for statistics * 8-bit multiplexed and de-multiplexed P interface: Siemens, Intel or Motorola mode * Communication between an external P and the DSP core via on-chip mailbox * DMA support lines for a special mailbox (serving a fast HDLC channel) * Programmable clock generator providing all required system clocks * Master and slave configurations * JTAG compliant test interface with additional serial interface option connecting to the On-chip Emulation Module (OCEM) for DSP program debugging 6.10.2 Documentation Links - DSP Embedded Line Ports Controller with HDLC Integration (DELPHI PEB 20570 Version 1.1) Preliminary Product Overview 11.98 - DSP Embedded Line Ports Controller with HDLC Integration (DELPHI PEB 20570 Version 1.1) Preliminary Data Sheet 03.99 6.11 VIP PEB 20590 The VIP is a line transceiver IC for different line interface modes (S/T and Upn). 6.11.1 Features * Eight 2B+D interfaces with full duplex transceivers in total, with up to four S/T (4-wire) or eight Upn (2-wire ping-pong) interfaces: - S/T interfaces at 192 kbit/s with analog line transceivers according to ITU I.430, ETSI 300 012 and ANSI T1.605; compatible to QUAT-S, PEB 2084 - Upn interfaces at 384 kbit/s with analog line transceivers according to ZVEI standard; compatible to OCTAT-P, PEB 2096 - Receive timing recovery - Conversion between pseudo-ternary and binary codes - Execution of test loops - Frame alignment in trunk applications with maximum wander correction of 25 s - Programmable selection of S/T channels for reference clock sources in trunk applications * IOM-2000 interface to DELPHI-PB supporting up to 12 Upn and 12configurable Upn or S/T subscriber/trunk lines * JTAG compliant test interface Solution Guide 35 04.99 Solution Guide Small PBX Systems Application Specific Details on Chipsets Note: Upn refers to a version of the Up0 interface (according to ZVEI standard) with a reduced loop length 6.11.2 Documentation Links - Versatile Interface Port (VIP PEB 20590 Version 1.1) Preliminary Product Overview 11.98 - Versatile Interface Port (VIP PEB 20590 Version 1.1) Preliminary Data Sheet 03.99 6.12 IPAC-X, ISAC-SX and SBCX-X The ISAC-SX implements the four-wire S/T interface used to link voice/data terminals to ISDN. It is the successor to the ISAC-X PEB 2086. The component switches B and D channels between the S/T and the ISDN Oriented Modular (IOM (R)) interfaces, the latter being a standard backplane interface for the ISDN basic access. The device provides all electrical and logical functions of the S/T interface, such as: activation/deactivation, mode dependent timing recovery and D channel access and priority control. The HDLC packets of the ISDN D channel are handled by the ISAC-S which interfaces them to the associated microcontroller. In one of its operating modes the device offers high level support of layer-2 functions of the LAPD protocol. In addition to the ISAC-S the ISAC-SX has also a rudimentary B-channel HDLC controller for remote download. The IPAC-X integrates the same functionality as the ISAC-SX but has two fully functionally B-channel HDLC controllers. The SBCX-X does not have any HDLC controllers. All of the three devices can be programmed either via IOM or SCI bus and have a flexible timeslot assignment. 6.12.1 Features * * * * * * Full duplex 2B + D S/T interface transceiver Conversion of the frame structure between the S/T interface and IOM Receive timing recovery according to selected operating mode Multiframe synchronization D-channel access control (only IPAC-X and ISAC-SX) Activation and deactivation procedures, with automatic wake-up from power-down state * Access to S and Q bits of S/T interface * Adaptively switched receive thresholds * Frame alignment with absorption of phase wander in NT2 network side applications Solution Guide 36 04.99 Solution Guide Small PBX Systems Application Specific Details on Chipsets * * * * * * * * * * * * * Support of LAPD protocol FIFO buffer (2 32bytes) for efficient transfer of D-channel packets 8-bit microprocessor interface, multiplexed or non-multiplexed Serial interfaces: IOM-2, SCI Implementation of IOM-1/IOM-2 MONITOR and C/I channel protocol to control peripheral devices Microcontroller access to B-channels and intercommunication channels B-channel switching B-channel mapping on SSI-interface 2 B-channel HDLC controllers (only IPAC-X) 2 FIFO buffer (2 64 bytes) for efficient transfer of B-channel packets (only IPAC-X) Rudimentary B-channel HDLC controller for remote download (only ISAC-SX) Watchdog timer Test loops Note: This chip is not yet available. Engineering samples of the new S-transceivers will be available in Q3, 1999. 6.12.2 Documentation Links documentation not yet available 6.13 DuSLIC DuSLIC is a chip set, comprising one dual channel SLICOFI-2 CODEC and two single channel SLIC chips. It is a highly flexible CODEC/SLIC solution for an analog line circuit and is totally programmable via software. Users can now access different markets with a single hardware design that meets all line circuit requirements worldwide. There are three DuSLIC options: DuSLIC-S (Standard), DuSLIC-E (Extended) and DuSLIC-P (Power Management), optimized for different applications. They differ in both power management and ringing features. All DuSLICs consist of the same SLICOFI-2 chip with either two SLIC-S, SLIC-E or SLIC-P chips. The employment of SLIC-S, SLIC-E or SLIC-P depends on the application. SLIC-S (PEB 4264) and SLIC-E (PEB 4265) are optimized for access network requirements, while the power management SLIC-P (PEB 4266) is an enhanced version for extremely power-sensitive applications or when internal unbalanced ringing is required. Unlike traditional designs, DuSLIC splits the SLIC function into high-voltage SLIC functions and low-voltage SLIC functions. 6.13.1 Features * Internal unbalanced/balanced ringing capability up to 85 V RMS * Programmable metering generation * Programmable battery feed with long-loop-driving facility Solution Guide 37 04.99 Solution Guide Small PBX Systems Application Specific Details on Chipsets * * * * * * * * * * * * * * * * Fully programmable dual-channel CODEC Ground/loop start signaling Polarity reversal Integrated test and diagnosis functions On-hook transmission Integrated DTMF generator Integrated DTMF decoder Integrated caller ID (FSK) generator Integrated fax/modem detection Optimized filter structure for modem transmission Three party conferencing (in PCM/mC mode) Message waiting lamp support (PBX) Power optimized architecture Power Management capability (Integrated battery switches) 8 and 16 kHz PCM Transmission Specification in accordance with ITU-T Recommendation Q.552 for Z-interface and applicable LSSGR Note: This chip is not yet available. Engineering samples of the DuSLIC will be available in 07, 1999. 6.13.2 Documentation Links documentation not yet available 6.14 Voltage Regulator TLE 4263 TLE 4263 G is a 5-V low-drop voltage regulator in a P-DSO-20-6 SMD package. The maximum input voltage is 45 V. The maximum output current is more than 200 mA. The IC is short-circuit proof and incorporates temperature protection that disables the IC at overtemperature. The IC regulates an input voltage VI in the range of 6 V < VI < 45 V to VQrated = 5.0 V. A reset signal is generated for an output voltage of VQ < 4.5 V. This voltage threshold can be decreased to 3.5 V by external connection. The reset delay can be set externally by a capacitor. The integrated watchdog logic controls the connected microcontroller. 6.14.1 * * * * * * Features Output voltage tolerance <= 2% Low-drop voltage Very low standby current consumption Overtemperature protection Reverse polarity protection Short-circuit proof Solution Guide 38 04.99 Solution Guide Small PBX Systems Application Specific Details on Chipsets * Setable reset threshold * Watchdog * Wide temperature range 6.14.2 Documentation Links - http://www.siemens.de/semiconductor/products/36/365.htm 6.15 LED LxS269 Surface mount LED in three colors (x=S:red, x=G:green, x=Y=yellow) with very low power consumption: * * * * * colored, diffused package extreme wide-angle LED for use as optical indicator high luminous intensity at very low currents (typ. 2 mA) suitable for all SMT assembly and soldering methods As throughhole version, e.g. Lx 5469 has similar features as described above. 6.15.1 Documentation Links - http://www.siemens.de/semiconductor/products/37/371.htm Solution Guide 39 04.99 Solution Guide Small PBX Systems Glossary 7 Glossary A-law Coding scheme as used in A/D conversion for speech signals in Europe and Asia. Defined in ITU G.711. Basic Rate BASIC RATE INTERFACE (BRI) An ISDN service referred to as 2B+D. BRI provides two 64-kbps digital channels. It is capable of simultaneously transmitting or receiving any digital signal (voice, video or data). ISDN Terminal Adapters (TAs) replace modems as the customer-premise connection to this service, to make direct connections of data terminals and telephones. BORSCHT Battery Overvoltage Ringing Supervision Codec Hybrid Testing. The seven features on an analog interface. DSP Digital Signaling Processor Hardware that is optimized to multiply and accumulate (MAC). Thus fast calculations of filters are possible DSS1 Digital Subscriber Signaling System No. 1 European Standard for the signaling on the D-channel of the ISDN network DTMF Dual Tone Multi Frequency Dialing information on analog interfaces (POTS) realized with standardized frequencies. Frequency Shift Key (FSK) Modem transmission technique. In this case used to transfer Caller ID data. FSK -> Frequency Shift Key HDLC High Level Data Link Protocol Secure transmission protocol using flags and checksums. IOM ISDN Oriented Modular 4 wire serial bus system to connect ISDN devices. IOM-2 and IOM-2000 are subsets of IOM. ISDN INTEGRATED SERVICES DIGITAL NETWORK (ISDN) A set of standards for transmission of simultaneous voice, data and video information over fewer channels than would otherwise be needed, through the use of out-of-band signalling. The most common ISDN system provides 144 kbps data rate via two voice/data "B" channels at 64 kbps each plus one signalling "D" channel at 16 kbps over a traditional copper wire pair. Two different realizations are distinguished: -> Basic Rate and -> Primary Rate. Solution Guide 40 04.99 Solution Guide Small PBX Systems Glossary Metering Pulses -> Teletax Pulses -law Coding scheme as used in A/D conversion for speech signals in USA, Japan and Australia. Defined in ITU G.711. PBX PRIVATE BRANCH EXCHANGE (PBX) A Customer Premise Communication Switch used to connect customer telephones (and related equipment) to LEC central office lines (trunks) and to switch internal calls within the customer's telephone system. Modern PBXs offer numerous software-controlled features such as call forwarding and call pickup. A PBX uses technology similar to that used by a central office switch (on a smaller scale). The acronym PBX originally stood for "Plug Board Exchange". PCM Pulse Code Modulation. A coding mechanism used to convert analog speech signals into digital data (8-bit resolution). Two additional coding schemes apply: A-law (used in Europe and Asia) and -law (used in USA, Japan, Australia). PSM is also referred as the bus between different telecommunication devices and consists usually of four lines: frame strobe, clocking, data in, data out. The typical operating range of these buses is between 128 kbit/s and 8192 kbit/s. PLL Phased Lock Loop (PLL) PLLs generate arbitrary synchronous clocks out of an incoming clock signal. POTS PLAIN OLD TELEPHONE SERVICE (POTS) Referring to analog telephone service, nominal 0,3-3,4 kHz bandwidth. The basic service provided by the public telephone network, without any added facilities such as conditioning. Primary Rate PRIMARY RATE INTERFACE (PRI) An ISDN service that operates within USA at a rate of 1.544 Mbps (T1). This service provides 23 B channels at 64 kbps and 1 D channel at 64 kbps. The system uses 8 kbps for framing bits. In Europe (2.048 Mbps) the service provides 30 B channels at 64 kbps and 1 D channel at 64 kbps and uses 64 kbps for framing bits (E1). The service allows simultaneous transmission over all B channels and the D channel. RS-232 EIA hardware standard for serial transmission. V.24 is the protocol running on the RS-232 interface. Solution Guide 41 04.99 Solution Guide Small PBX Systems Glossary S-interface SCI Bus system running over 4 wires, capable of bearing a datarate of 144 kbit/s. It is used between the terminal equipment and the PBX or NT and between the NT and the PBX. Up to eight devices can be connected at the same time to the bus. This interface is often also referred as S-bus or S-reference-point. -> Serial Controller Interface Serial Controller Interface A serial interface consisting of a chipselect, a clock line and a receive and transmit line (that also can be shared). Typically not time critical information is transferred over this connection. Data rates from 0 kbit/s up to 1 or 2 Mbit/s are possible. Small PBX A small PBX is used within households or small companies and typically does not consist of more than ten telephones connected to it. SLIC Subscriber Line Interface Circuit. Used in analog ->POTS connections on the subscriber side as amplifier for the ac speech signals and for providing a DC current to operate the connected telephone. SPI -> Serial Controller Interface SOHO -> Small PBX Subscriber Line The subscriber line or side is located as the physical interface between the terminals and the PBX. This term is used to distinguish the two possible S-interfaces of a PBX: Subscriber Line and (->)Trunk Line. Teletax Pulses Short packages of 12 or 16 kHz sine waves used to signal analog telephone sets connection fee information. Trunk Line As trunk line of a PBX the connection to the NT of network is defined. TTX -> Teletax Pulses USB Universal Serial Bus. Bus concept for PCs to connect all kind of peripherals. TA -> Terminal Adapter Terminal Adapter V.24 Solution Guide Device consisting of an S-interface and analog -> POTS and/or data interfaces. The transfer of data and signalling is handled by a microcontroller running the protocol stack. -> RS-232 42 04.99 Solution Guide Small PBX Systems Index 8 Index B block diagram 5 BORSCHT 10 C C161 16 C161U 20, 34 C161V/-K/-O/-RI 31 C165 UTAH 16, 18, 32 C513A 29 Caller ID 11 Concept Selection 7 D DELPHI 19 DELPHI PEB 20750 34 DSP 20 DSP based small PBX with up to four S-interfaces DSS1 9 DTMF 11 DTMF receiver 21 DTMF sender 21 DuSLIC Concept 21 19 F Frequency Shift Key FSK 11, 21 11 H HDLC 9, 13, 16, 18, 20 I IOM-2 9 IOM-2000 20 IPAC PSB 2115 13, 16, 25 ISAC-S PEB 2086 24 ISAC-S TE PSB 2186 9, 23 ISAC-SX 22 ISDN 5 Solution Guide 43 04.99 Solution Guide Small PBX Systems Index L LED LxS269 39 line adaptation 11, 21 line test 21 Low cost, extended feature small PBX Low-cost, basic feature small PBX 8 12 M metering pulses 11 microcontroller 10 P PLL 18, 20 POTS interface 10 primary rate 5 Q Questionnaire 6 R RS-232 16 S SBCX PEB 2081 13, 18 SBCX-X 22 SICOFI-2/-4 TE PSB 2132/34 27 SICOFI-2/4 TE PSB 2132/PSB 2134 11 S-interface 5, 9 SLIC 10 SLICOFI-2 21 SLIC-x 21 Small Office and Home PBX 5 Small PBX with RS-232 dataport 14 Small PBX with USB/RS-232 dataport 16 SOHO 5 S-transceiver 9, 13 subscriber line 5 Subscriber S-interface 14 T TA 14 teletax 11 Solution Guide 44 04.99 Solution Guide Small PBX Systems Index Terminal Adaptor 14 Three-Party-Conferencing trunk interface 13 trunk line 5 TTX 11, 21 21 U USB 16, 18, 20 V V.24 16 VIP 19 VIP PEB 20590 35 Voltage Regulator TLE 4263 Solution Guide 38 45 04.99