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Models 3151/3161 Interface Connections
B-33000-A2-GA31-80 December 1994
Table B-1
Auxiliary Backplane Connectors
Connector
Quantity Model Use
DTE 8 3151/3161 DB15 socket. Provides the connection to your T1
DSX-1 (DTE).
Network 1 3151/3161 50-pin RJ48H plug. Provides the connection to the T1
network for all eight slots supported by the Auxiliary
Backplane.
Clock In 1 3161 DB9 socket. Attaches an external clock. The external
clock provides timing for up to eight slots. Each
Auxiliary Backplane must have its own external clock
input.
Port 1 & 2 16 3151/3161 DB25 (EIA-530A) socket. Provides the connection from
a 3161 DSU/CSU to the synchronous data DTE.
The Port 2 DB25 socket connector allows one slot in
the carrier to be configured as the COM port, which
replaces the functionality of the second data port. The
COM port is a communications port that provides
access to the front panel from a locally connected PC.
Diag 2 3151/3161 8-pin modular jack. Provides diagnostic connectivity
between Auxiliary Backplanes in a carrier.