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Voice Relay Cable
Specification
Connector Pinout
PathBuilder S21x Switch Cabling
The voice relay cable shipped with the Voice Relay Daughtercard has the following
specification:
• Connectors: RJ11 to RJ11 Cable
• Color: Gray
The RJ11 connectors for the FXO and FXS port have the following pinout:
Pin
No.
Name
1
2
3
Loop B
4
Loop A
5
6
Warning!
The FXS Interface should only be connected to an analog telephone handset and/or
fax machine.
Warning!
The FXO Interface should only be connected to an analog PBX line.
Warning!
The PathBuilder S200 series switch Voice Relay daughtercard has not been certified
for use in a PSTN.
FXS
Function
Name
N/A
N/A
Aux B
Line B
Line A
N/A
Aux A
N/A
Voice Relay Cable
FXO
Function
N/A
External
Handset
External
Handset
N/A
B-3
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