User`s guide

C. Connectors, Cables, and Pin Assignments
7990-A2-GB20-00 May 2002
C-5
G.703 Network Interface
The G.703 interface is either two BNC connectors (Transmit and Receive) for a
75-Ohm unbalanced interface, or an 8-position, unkeyed modular connector for a
120-ohm balanced interface. See Table C-3, E1 120-Ohm Balanced Interface
Connector, and Figure C-3, E1 120-Ohm Network Interface Adapter Cable
(Feature Number 3100-F1-517).
Figure C-3. E1 120-Ohm Network Interface Adapter Cable
(Feature Number 3100-F1-517)
Table C-3. E1 120-Ohm Balanced Interface Connector
Signal Pin Number
Receive Ring 1
Receive Tip 2
Receive Shield 3
Transmit Ring 4
Transmit Tip 5
Transmit Shield 6