Mike's PBX Cookbook

Multi I/O cable NTRH0912

Used with 201i/202i servers, a multi I/O cable presents 2 network intefaces, and one RS-232 port, from an IPE slot 50-pin Amphenol (RJ-21). The standard cable is approximately 3 m (10 ft) long. If you need a longer length, use a RJ-45 female-to-female adapter to attach an additional CAT5 cable. A maximum length of 76 meters (250ft) is supported. Alternatively, you can use the pin diagram below to construct your own!

Cable Ring RJ-21 Tip Cable
COM1 - 9 (RI) 16 41 COM1 - 1 (DCD)
COM1 - 2 (RXD) 17 42 COM1 - 3 (TXD)
COM1 - 4 (DTR) 18 43 COM1 - 5 (GND)
COM1 - 6 (DSR) 19 44 COM1 - 7 (RTS)
COM1 - 8 (CTS) 20 45
ELAN - 3 21 46 ELAN - 6
ELAN - 1 22 47 ELAN - 2
CLAN - 3 23 48 CLAN - 6
CLAN - 1 24 49 CLAN - 2
Multi I/O cable NTRH0912
Multi I/O cable NTRH0912 - Source Avaya.com

Construction Notes:

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