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Personality module pin and signal assignments
Table 7-2 lists the data interface modules and identifies the items needed to connect
to the data device, including pin and signal assignment, cable and additional adapter
(if required). Some connections to EIA/TIA-232 and V.35 devices require
customized cables or adapters. These are described in sections 7.2 and 7.3
respectively.
The pin and signal assignments for each personality module are given in Figures 7-2
to 7-7 and Tables 7-3 to 7-8. In these tables, nc stands for no connection.
EIA/TIA-232 circuits must have a signal ground (telecom safety earth) connection
to the signal ground point on the rear panel of the unit.
If a DNIC module is installed, connect data devices via the 2600 MainStreet series
DTUs. If a 2B1Q module is installed, connect data devices via the 2700 MainStreet
series DTUs.
Interface module
RS-232
V.35
X.21
DNIC or 2B1Q
Codirectional
Notes
(1)
There are two kinds of V.35/DB25 personality modules; see Figures 7-3 or 7-4.
(2)
Do not use 90-0360-01 cables with the unit as these cables do not support all the clocking modes.
(3)
Only port 1 of the two RJ11 ports is used when a DTU is connected to the DNIC or 2B1Q module.
2902 MainStreet Technical Practices
May 2002
90-2906-01
Table 7-2 Data interface modules, connectors and cabling
Pin and signal assignment
Personality module
reference
Figure 7-2
Figure 7-3 or 7-4
Figure 7-5
(3)
Figure 7-6
Figure 7-7
Figure 7-2 RS-232 personality module pin and signal assignment
1
1
7 — Connecting to data devices
Data equipment end
of cable
Depends on adapter
configuration; see
section 7.2
(1)
See section 7.3
Same as Figure 7-5
Same as Figure 7-6
Same as Figure 7-7
8
1
8
RS-232
Cable required
1:1 RJ45-to-RJ45 cable
and an RJ45-to-DB25
adapter
(2)
DB25-to-M34 cable
1:1 DB15-to-DB15 cable
1:1 RJ11-to-RJ11 cable
1:1 RJ45-to-RJ45 cable
2
8864
7-3
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