3com S21x Manual De Usuario
PathBuilder S21x Switch Cabling
B-3
Voice Relay Cable
Voice Relay Cable
Specification
The voice relay cable shipped with the Voice Relay Daughtercard has the following
specification:
specification:
• Connectors: RJ11 to RJ11 Cable
• Color: Gray
Connector Pinout
The RJ11 connectors for the FXO and FXS port have the following pinout:
Warning!
The FXS Interface should only be connected to an analog telephone handset and/or
fax machine.
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.
for use in a PSTN.
Pin
No.
No.
FXS
FXO
Name
Function
Name
Function
1
N/A
N/A
2
N/A
Aux B
External
Handset
Handset
3
Loop B
Line B
4
Loop A
Line A
5
N/A
Aux A
External
Handset
Handset
6
N/A
N/A