Xorcom UC926, Руководство пользователя

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UC926 IP Phone
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If the person that wanted to be spoken to does not want to answer the call, then the
person that answered the incoming call could use this function.
Transfer Release Trigger
This option defines when the phone sends BYE to the server to release the transferred call.
1. NOTIFY with 200OK. After receiving REFER request sended by the phone, server will send
NOTIFY to the phone, and the phone response 200OK, this is the trigger for the phone to
release the call.
2. 2xx response of REFER. The phone will not release the call until it receives a 2xx response
from the server to the phone's REFER request.
3. BYE for the call. The phone will not release the call until receiving BYE from the server.