We're running CUCM 7.1.2 and H.323 Gateways in each office. We are already using the HQ Gateway as backup in case of an ISDN failure in a remote office. By default the H.323 Gateways are sending the disconnect cause of "1" (Hex 81, unallocated or unassigned number, see debug below) in case of an ISDN Port failure.
Is there a command to change the disconnect cause (the H.323 one, not the ISDN disconnect cause) to something more accurate like Hex A1 "circuit out of order" or Hex A6 "network out of order"?
Any suggestions are welcome.
Many thanks in advance
What is happening is your pots dial peer goes into a 'down' state when the ISDN circuit goes down. This is similar to having a dial peer defined with no destination-pattern.
When the gateway does a dial-plan lookup, it sees no available dial peers and says that it does not have that number in it's dial-plan.
You may be able to enter this command to change that behavior:
no dial-peer outbound status-check pots
That would allow you try the call out the PRI, and would change the cause value.
Let me know if that helps.