Authenticate SIP BYE Messages

It's recommended to enable the device to authenticate incoming SIP BYE requests before it releases the call. This prevents, for example, a scenario in which the device receives a BYE request from a third-party imposter assuming the identity of a participant in the call and therefore, the call is inappropriately disconnected.

When the device is configured to authenticate BYE messages, it sends a SIP authentication response to the sender of the BYE request and waits for the sender (user) to authenticate it. The call is disconnected only if the authenticating server responds with a 200 OK.

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To authenticate SIP BYE messages:

1.

Open the Proxy & Registration page (Setup menu > Signaling & Media tab > SIP Definitions folder > Proxy & Registration).

2.

From the 'BYE Authentication' drop-down list, select Enable:

Enabling SIP BYE Authentication