Carrier Access SNMP manual FXS Voice Channel Monitoring and Testing, TP Busy/Idle Switch

FXS-ID Configuration

Caution: If you use this setting when no customized signaling has been installed, all back plate LEDs turn a steady RED and normal operation of the FXS-ID voice card is interrupted.

Upon request, Carrier Access will provide customized FX signaling options that can include any of the aforementioned options plus others, including answer supervision wink signaling.

Answer Supervision Wink Signaling

Answer supervision wink signaling takes the form of a 200-ms tip-open condition (loop current turns off) from the Access Bank II - SNMP to the voice-mail or phone system when the far end goes off hook (answers the call). Battery feed from the FXS-ID returns to normal (tip grounded) after the 200-ms disconnect. This feature is useful if the calling party switch needs to know when the far end has answered the call.

8.6.2 TP Busy/Idle Switch

ON

Idle

OFF

Busy

Use this switch to select whether the FXS tip-ground relays will be closed (busy) or open (idle) dur- ing trunk processing. (Trunk processing occurs when the T1 line is in an alarm or reset state.) The Busy position (OFF) causes the tip-ground relays to be closed during a T1 alarm or reset period. The Idle position ON) causes the tip-ground relays to be open during a T1 alarm or reset period.

Note: The Busy position (OFF) is recommended for loop-start or ground-start applications where the attached PBX has the ability to re-route calls to different trunks when the T1 line is down.

8.7 FXS Voice Channel Monitoring and Testing

The channel status LEDs on the back plate of the Access Bank II - SNMP allow you to monitor the status of the individual FXS voice lines. Operation of these LEDs is summarized in Figure 8-4.

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