Mike's PBX Cookbook

TALC Multi I/O cable

For TALC cards only, the multi I/O cable breaks out 2 network ports, and one serial port, from an IPE slot 50-pin Amphenol (RJ-21). The standard cable is approximately 30cm (1ft) long. If you can't find the cable, punch one end of an ethernet cable (blue/orange pairs) to pairs 21/22 (or 23/24), or use the pin diagram below to construct your own! Note, TALC network ports are 10/half-duplex.

P5 Ring P1 Tip P5
Unit 0 1 26 Unit 0
Unit 1 2 27 Unit 1
Unit 2 3 28 Unit 2
Unit 3 4 29 Unit 3
Unit 4 5 30 Unit 4
Unit 5 6 31 Unit 5
Unit 6 7 32 Unit 6
Unit 7 8 33 Unit 7
Unit 8 9 34 Unit 8
Unit 9 10 35 Unit 9
Unit 10 11 36 Unit 10
Unit 11 12 37 Unit 11
Unit 12 13 38 Unit 12
Unit 13 14 39 Unit 13
Unit 14 15 40 Unit 14
Unit 15 16 41 Unit 15
SDI - 2 (RXD) 17 42 SDI - 3 (TXD)
  20 45 SDI - 5 (GND)
EN0 - 3 (RX+) 21 46 EN0 - 6 (RX-)
EN0 - 1 (TX+) 22 47 EN0 - 2 (TX-)
EN1 - 3 (RX+) 23 48 EN1 - 6 (RX-)
EN1 - 1 (TX+) 24 49 EN1 - 2 (TX-)
TALC Multi I/O cable

TALC Multi-I/O Cable-Enhanced - Source telstrat.com


TALC IP configuration

P1 - to TALC slot on PBX I/O panel
P2 - Customer LAN (EN0) RJ-45
P3 - Serial port (SDI) DB9-Female
P4 - Embedded LAN (EN1) RJ-45
P5 - to station cross-connect frame

In P3, loop pins: 1 to 4 (DTR-DCD),
4 to 6 (DTR-DSR), 7 to 8 (RTS-CTS)

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