Yealink CP860 [400/417] Always call forward

Administrator’s Guide for CP860 IP conference phones

388

Step

Action

Description

response indicates that User B accepts

the transfer.

F27

BYE—User A to Proxy Server

User A terminates the call session by

sending a SIP BYE request to the proxy

server. The BYE request indicates that

User A wants to release the call.

F28

BYE—Proxy Server to User B

The proxy server forwards the BYE

request to User B.

F29

200OK—User B to Proxy

Server

User B sends a SIP 200 OK response to

the proxy server. The 200 OK response

notifies User A that User B has received

the BYE request.

F30

200OK—Proxy Server to User

The proxy server forwards the SIP 200

OK response to User A.

The following figure illustrates successful call forwarding between Yealink SIP IP phones

in which User B has enabled always call forward. The incoming call is immediately

forwarded to User C when User A calls User B. In this call flow scenario, the end users

are User A, User B, and User C. They are all using Yealink SIP IP phones, which are

connected via an IP network.

The call flow scenario is as follows:

1. User B enables always call forward, and the destination number is User C.

2. User A calls User B.

3. User B forwards the incoming call to User C.