[ Version ( since = "1.12" ) ]
public bool transfer_sync (Cancellable? cancellable = null) throws Error
Synchronously joins all active and held calls, and disconnects from them.
The calling thread is blocked until a reply is received. See transfer for the asynchronous version of this method.
| this |
A ModemVoice. |
| cancellable |
A Cancellable or |
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