[cisco-voip] Cisco Fax Server/ Resource Unavailable / MGCP H323

[Kalle Tetto]

Hi,

We have a Cisco Fax Server, Captaris 9.3 installed. Connecting via H323 
to a Cisco CCM Cluster 4.2(3). The CCM is connected via MGCP PRI to the 
PSTN.

PSTN<->MGCP VGW E1/PRI <-> CCM 4.2(3) <-> Fax Server H323

If I call in from PSTN I can see resource unavailable on the Q931 Debug 
of IOS. I could not test from inside currently, because we configured 
remotely with no one onsite.

I receive this error after 3 rings. If I call out from Fax Server it 
seems to be the same, the called FAX or phone rings, but after 3 rings 
the Fax server says destination busy.

I have checked for codec mismatches, but could not find any error. Also 
I have MTP, Transcoding and Conferencing configured. I will test 
tomorrow without Media Resources, only to be sure.

Has anyone had this before?

Has anyone this setup running, if so could you please pass me the 
running MGCP Config and the setup in the Fax Server.

Many Thanks and all the best.