Administrator’s Guide for SIP-T2xP IP Phones
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The following figure illustrates the scenario of an unsuccessful call due to the reason of
the called user being busy. In this scenario, the two end users are User A and User B.
User A and User B are located at the Yealink SIP IP phones.
The call flow scenario is as follows:
1. User A calls User B.
2. User B is busy on the phone and unable or unwilling to take another call.
The call can’t be set up successfully.