Yealink SIP T46G Administrator's Manual page 393

Administrator's Guide for SIP-T46G IP Phone
Step
User B
200 OK—User B to Proxy
Server
F7
200 OK—Proxy Server to User
A
F8
380
Action
User A wants to disconnect the call.
User B sends a SIP 200 OK response to
the proxy server. The SIP 200 OK
response indicates that User B has
received the CANCEL request.
The proxy server forwards the SIP 200
OK response to notify User A that the
CANCEL request has been processed
successfully.
Description