I have an H323 voice GW which connected to the PSTN via a T-1 PRI. Intermittently, callers from the IP telephony network receive re-order tone when dialing out.
Debug ISDN q931 indicates GW sending to PSTN that network resources are unavailable:
ISDN Se0/1/0:23 Q931: TX -> DISCONNECT pd = 8 callref = 0x1AFE
Cause i = 0x80AF - Resource unavailable, unspecified
"Show isdn serv" indicates all B channels are in service. Sometimes when this happens, there are only 3 active calls, other times there are 5 or 6 active calls.
Are there any ideas? I appreciate any input! Thanks.
Mike.
