Ref: 03250430
Title: IB/3 Cabling for T1; V.35 and RS-449 Interfaces
Date: 4/7/88

Copyright 3Com Corporation, 1991.  All rights reserved.

You may find the following information on cabling of the IB/3
useful.  Most of it is available elsewhere, and manual references
are provided.

              CABLES REQUIRED FOR ITCM'S (T1)

For V.35 Synch Interface: 07-0106-00 (CBL-V35T-20)

This cable is on page 4-41 of the IB Installation and Operation
Guide.

A SBA-V.35T is also required (08-0182-00) as CSU/DSU's require 2
additional signals not implemented on the standard SBA-V.35 which
has 2 V.35 ports.  These signals are SCTE-A and SCTE-B (see pages
4-35 and 4-36 of the IB IOG to contrast these two SBA's)

For back-to-back operation, a standard V.35 Modem Eliminator
Cable may be used (07-0043-00, CBL-V.35ME-25).

***Part Number 08-0182-00 includes the ITCM Board, necessary
hardware, and Assembly Drawing.  ***

For RS-449 Interface:  07-0108-00 (CBL-449T-20)

The page references above apply.  A SBA-449T is also required (08-
0182-01).  For back-to-back operation, a RS-449 Modem Eliminator
Cable may be used (07-0045-00, CBL-449ME-25).

***Part Number 08-0182-01 includes the ITCM Board, necessary
hardware, and Assembly Drawing.  ***
