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Cisco Bug: CSCvh70570 - MGCP fallback mode remains ON after CUCM registered

Last Modified

Aug 09, 2019

Products (1)

  • Cisco 3900 Series Integrated Services Routers

Known Affected Releases

15.4(3)M2.2

Description (partial)

Symptom:
CUCM - WAN - GW - phone
This is caused WAN failure.
MGCP GW goes to fall back mode from backhaul, and it is recovered by WAN recover.
But MGCP fallback mode remains ON after CUCM registered.

#show ccm-manager

Priority        Status                   Host
============================================================
Primary         Registered               CUCM IP ADDRESS
...
MGCP Fallback mode:             Enabled/ON

Conditions:
caused by WAN failure, especially network flapping
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