Installation manual

COMSPHERE 3000 Series Carrier
B-2 March 2001 3000-A2-GA31-F0
Table B-1
T1 Interface Connectors
Connector
Quantity T1 Type Use
DTE 8 CSU and
DSU/CSU
DB15 socket. Provides the connection to your T1 DSX-1 (DTE).
Network
Interface
1 CSU and
DSU/CSU
50-pin RJ48H plug. Provides the connection to the T1 network for all eight slots
supported by the T1 auxiliary backplane.
Clock In 1 DSU/CSU DB9 socket. Attaches an external clock that provides timing for up to eight slots.
Each T1 auxiliary backplane must have its own external clock input.
Port 1 & 2 16 CSU and
DSU/CSU
DB25 (EIA-530-A) socket. Provides the connection from a T1 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 providing access to the front panel from a
locally connected PC.
Diagnostic
Chan
2 CSU and
DSU/CSU
8-pin modular jack. Provides diagnostic connectivity between T1 auxiliary
backplanes in a carrier.
PORT
1
PORT
1
PORT
1
PORT
1
PORT
1
PORT
1
PORT
1
PORT
1
CLOCK IN
DIAGNOSTIC
CHAN
PORT
2
PORT
2
PORT
2
PORT
2
PORT
2
PORT
2
PORT
2
PORT
2
DTE
DTE DTE DTE DTE DTE DTE
DTE
SLT 8 (16)
SLOT 6 (14)
SLOT 7 (15)
SLOT 5 (13)
SLOT 4 (12) SLOT 3 (11)
SLOT 2 (10)
SLOT 1 (9)
T1 NETWORK
INTERFACE
DIAGNOSTIC
CHAN
CAUTION:
DISCONNECT ALL TELEPHONE LINES AT THE NETWORK
INTERFACE BEFORE TOUCHING OR SERVICING
496-14364-01
T1 Network
Interface
Connector
Figure B-1. T1 Auxiliary Backplane Connectors