Symptom
If the carrier has not enabled the Calling Line Identification Presentation (CLIP) service for a PSTN number, an outer-office user has to spend as long as 15 seconds to connect a call to a PSTN user through the FXO port.
Cause
The possible cause is that the CLIP service has not been enabled for the PSTN number.
Solution
Check whether the CLIP service is enabled for the PSTN number. (You can test the CLIP service directly on the PSTN network.)
If no and the CLIP service is required, contact the carrier to enable the CLIP service.
If no and the CLIP service is not required, go to 2.
Configure the FXO port.
Run the following command:
TERMINAL(config)#sip user 0 fxo-clip no
icon-note.gif NOTE:
This command is available only for IADV300R001C03SPC900, IADV300R001C04SPC300, and later versions. You are advised to upgrade older versions to one of the preceding versions.
Check whether the fault is rectified.
If yes, the procedure ends.
If yes, go to 4.
Contact Huawei technical support.
