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T1/E1/PRI Cables
T1/E1/PRI Cables
Introduction This section describes the cable requirements for the T1/E1/PRI Card.
Cable
Requirements
The T1/E1/PRI card requires one of the following cables to connect to the
T1/E1 network:
• RJ48-to-RJ48 twisted-pair cable to connect to a T1 network (minimum 26
AWG wire).
• RJ48-to-RJ48 twisted-pair cable to connect to a E1 network having 120-Ohm
line impedance. (ETSI-TBR-013 requires that this cable be constructed of
solid conductors of 0.4mm to 0.6mm.)
• 2 BNC-to-BNC 75-Ohm coaxial cables to connect to an E1 network that has
75-Ohm line impedance.
RJ48C Connector This table describes the RJ48C connector pinout:
BNC Adapter Cable A BNC adapter cable provides two BNC connectors to connect to an E1 network
with 75-Ohm line impedance. Use these adapter cables:
• BNC connector marked XMIT for transmit (TX).
• BNC connector marked REC for receive (RX).
Pin Function
1 Receive Ring
2 Receive Tip
3 (no connection)
4 Transmit Ring
5Transmit Tip
6 (no connection)
7 (no connection)
8 (no connection)