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Choppy or synthetic voice develops over time when cRTP is configured through a virtual template interface

Core Issue

Customer gets garbled voice quality on calls in both directions after the routers run for about a day. To clear it up, issue the clear interface command on the virtual access interface.  If the interface is not cleared, the voice quality continues to be garbled.


Upgrade your Cisco IOS  Software Release to the most recent appropriate version for your installation. cRTP is only supported on virtual template interfaces from Cisco IOS version 12.2(16.1)T.

Note: Read the release notes to make sure the upgraded version does not have a cRTP bug that may affect your installation. For more information, refer to the Cisco Bug    Toolkit.

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Version history
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Last update:
‎06-22-2009 04:46 PM
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