I have a question here.
We have two MGCP voice gateway routers configured on CUCM 7. If the network connection between the primary MGCP voice router and CUCM servers is broken, we notice that the status of the primary MGCP gateway on CUCM is unregistered, but the E1 internface (PSTN circuit) on that rouer is still up. This causes an issue that Telco carrier still sends incoming calls to PSTN link on the primary MGCP gateway router, not the backup MGCP gateway router which still registers with CUCM server. As a result, incoming calls just termiate on the primary MGCP router and cannot go anywhere.
I would like to know when primary MGCP gateway router loses connection to CUCM servers, if it is possible to for the MGCP router to bring down the E1 internface, which can let Telco carrier starts sending incoming calls to the backup MGCP gateway router.
If L2 is still up, then that means the PRI is switching over it's D channel to terminate locally, like it does in SRST scenarios.
If you don't want this:
no service alternate default
no ccm fallback-mgcp
Keep in mind that if you disable this feature, this gateway will never function properly as an PSTN gateway for calls out this circuit when in SRST. If this gateway isn't an SRST router with call-manager-fallback configured, then you should have no worries.