SIP trunk say's invalid number when calling a busy Analog extension.

[JoConnex]

Hi Guys.

I have an IPOffice 9.1.7 server edition with multiple sip trunks on it.Evey thing is working fine except for on thing.If we call a did that is point on a analog extension, it ring and the call pass no problem , but when the extension is already in use , instead of getting a busy signal, the telco give response that the ^^number you have dial is not in service^^. I don't even see the call coming in system status.I have this issue with fax and regular analog wireless phone.

Thank you.

Jo the quebec tech
AIPS,ACSS,APSS

 

[derfloh]

Check SysMon trace with SIP filters enabled.

IIRC there is also a setting within the SIP trunk how to answer if a busy user is called.