Mitel 6863i - Ending Calls

Mitel 6863i SIP Phone Release 4.0.0 SP1 User Guide
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ENDING CALLS
To end a call, you first need to connect or reconnect to the call if not already connected (for example,
if your caller is on hold). Press to end the call. If connected through the handset, you
can also place the handset back on hook to end the call.
IP PHONE UI