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TCC_2
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Advocate

Core Issue

The cause of this problem is a bug associated with fast switched Real-Time Protocol (RTP) header compression.

The voice is still intelligible and may be described as an underwater voice.

Resolution

The issue is resolved in Cisco bug ID CSCdy57722 by a Cisco IOS  Software upgrade.

For a workaround, perform these steps:

  1. Disable the RTP header compression link.
  2. Disable fast switching on the Frame Relay connection by issuing the no ip route-cache command under the interfaces.Note: This may cause the router's CPU to increase, as it now uses the process-switched path.

To resolve the problem, use a version of Cisco IOS Software that includes the fix for Cisco bug ID CSCdy57722.

 

Voice Gateways

1700 Series Access Router

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