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Connectors, Cables, and Pin Assignments
C-6
9664-A2-GB20-00March 2000
Network Connector
The network connection is through the ISDN BRI leased-line interface/connector,
which is an 8-position unkeyed modular jack. The following table shows the pin
assignments for the BRI network port and the purpose of each.
Function
Direction Pin Number
BRI Transmit Ring To NT1 3
BRI Receive Ring From NT1 4
BRI Receive Tip From NT1 5
BRI Transmit Tip To NT1 6
ISDN Modular Cable
This cable is used to connect the network interface to the NT1. It is an ISDN BRI
S/T modular cable, with an 8-position unkeyed modular plug at each end.
Signal
Direction Pin Numbers
Transmit Positive (+) To NT1
3 3
Transmit Negative (–)
To NT1
3
6
3
6
Receive Positive (+) From NT1
4 4
Receive Negative (–)
From NT1
4
5
4
5
The ISDN cable comes with the FrameSaver unit.