07-28-2009 08:55 AM - edited 03-18-2019 10:30 AM
Hi NetPro
I have a h323 gateway whit 1 E1 to PSTN, when i call at number1 have ringback and call it's OK, the same when i call at number2, 3, 4, 5, but when i call at numer10 the call don't have ringback but the call establish OK, call again at number1 and have ringback but call at nuber10 and dont have ringback.
any idea?
the call control is CUCM 6.1.
07-28-2009 11:06 AM
Take "debug isdn q931" with "term mon", see if you can relate the problem to one or more particular B chanell.
After you're positive about it, complain to telco and be prepared to prove your point stongly.
07-28-2009 11:27 AM
07-28-2009 02:15 PM
Telco has not sent ALERTING for the 1st call, so no ringback.
Search "troubleshooting ringback" for suggested workarounds.
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