Cisco SIP of SX20 registration failed

Hello

I want to share the issue we encountered on an endpoint Cisco SX20 fails to register on a VCS control using the SIP.

Endpoint is running version TCNC6.2.0. The other points of current endpoint of running on TC5x.x, TC6.x.x, TC7.x.x has no problem.

The endpoint can register on the VCS, but when we try to call one of the other endpoints, the call is not successful. Endpoint will ring and when we accept the call, there is no audio and video, then call disconnects. After disconnecting the call, endpoint failed to register on the VCS.

We have tried to re - register again, restart the system, then tried to make another call. Same problem again.

On the VCS, we tried to create a subzone of this specific endpoint (subnet) with treat as authenticated policy. Problem persists.

We also tried to restore the codec to factory default settings, but did not solve the problem.

Search for your advice.

Thanks for the help in advance.

Thanks & best regards,

Acevirgil

Since you are using the version code TCNC, any encryption will not work for calls, if force you encryption anywhere on the VCS or see the call to try like TLS in the call history?

Tags: Cisco Support

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