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B-4 PathBuilder S21x Switch Cabling
Dual FXS Voice Relay Cable
Dual FXS Voice Relay Cable
Specification
The voice relay cable shipped with the Dual FXS Voice Relay Daughtercard has the
following specification:
Connectors: RJ45 to RJ45 Cable
Color: Gray
Connector Pinout
The RJ45 FXS port have the following pinout:
Warning!
The FXS Interface should only be connected to an analog telephone handset and/or
fax machine.
Pin
No.
FXS
Name Function
1N/A
2N/A
3 Loop B
4 Loop A
5N/A
6N/A