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Cisco Bug: CSCul69060 - CME/SRST port 2000 fails to open after adding the feature or a restart

Last Modified

Nov 27, 2020

Products (2)

  • Cisco 2600 Series Multiservice Platforms
  • Cisco 2600 Series Multiservice Platforms

Known Affected Releases


Description (partial)

On configuring the telephony-service for the first time onto the router, IP phones do not register despite of the correct configuration on the voice gateway. We have also seen where after a restart the same issue occurs where the IP phones fail to restart however the gateway is configured correctly.

This can also happen with SRST fallback using port 2000.

Configuring Telephony-service for the first time on the router or after a router restart.
Device tested with a 2901 and 2851 running IOS version 15.1(4)M6. IP phones can be any IP phone where they are trying to register on port 2000
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