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CSL 18: Call by protocol protocol to destination call_name failed media variation test. Reconfiguration of call target needed.
Source: CSL-2.01
Explanation: When a protocol makes a call to a particular destination, the call information structure identifies the media type and media variation to use for the call. If the media variation is not correct, this error message is printed.
Action: Use NIASCFG to reconfigure the WAN call destination information, then try to make the call again.
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