Callmanager 5.1.3 MGCP No busy tone Italy

dave.hodgkiss · ‎10-07-2010

Hi all,

I've got users in Italy complaing that when they ring external numbers and it is busy they get a message the called number does not exist or something along those lines. Has anyone had the same issue ? One document mentions changing a service parameter, but i don't know what affect this would have on the rest of the cluster. The gateway config is using overlap receiving.

Cheers

Dave

cschaubr · ‎10-14-2010

Hi Dave,

In this case it's interesting to see the topology and the call flow.

Please include this.

Thanks,

Charley

dave.hodgkiss · ‎10-15-2010

Hi Charley,

Gateway config attached.

Cheers

Dave

cschaubr · ‎10-15-2010

I checked the config.

Can you elaborate a bit more on how the users are supposed to dial out?

Do they dial out through a Nortel PBX?

Again ... What is the exact call flow?

dave.hodgkiss · ‎10-15-2010

This is an mgcp gateway and the end users dial 0 to match the outbound dial-peer which connects to the local telco. The other circuit is qsig to a Meridian this has nothing to do with the problem.

Regards.

Dave

Felipe Garrido · ‎10-15-2010

Dave,

Looks like the calls are using MGCP controlled ISDN E1s. If so, we'll need to determine if the telco/pbx is sending a PI to provide ringback inband.

Please collect the following debugs for a failed call.

debug mgcp packet

debug isdn q931

Note the calling and called party numbers.

-Felipe

dave.hodgkiss · ‎10-15-2010

I think your right Felipe it's jst knowing which PI is missing. I will try and test with the customer to gather some debug.

Cheers

Dave