H3C XE 200/2000 IP, Operation Manual

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Operation Manual – Call Services
H3C XE 200/2000 IP PBX
Chapter 15 Callback-On-Busy Service
15-2
callee has picked up the phone but the caller is busy or does not answer the phone in
time when being invited, the XE IP PBX regards that the call back service is
successfully finished and deletes this service.
15.1.3 Configuring and Using Callback-On-Busy Service
I. Working process of callback-on-busy service
The callback-on-busy service works as follows:
1) An authorized administrator logs on to the XE IP PBX and enables the
callback-on-busy service for subscriber A. Refer to Callback-On-Busy Service
Configuration for details.
2) When subscriber A calls subscriber B and finds that B is busy, subscriber A hangs
up.
3) Subscriber A picks up the phone to apply for the call back on busy service. Refer
to Register for callback-on-busy service for details.
4) After the preset call back interval, the XE IP PBX sends a call request to
subscriber B, and the phone of subscriber B rings.
5) Subscriber B picks up the phone and hear the voice prompt “It is subscriber A
( number ) using callback-on-busy service. Please wait.” Later the phone of
subscriber A rings.
Note:
In the voice prompt above, characters in italic means the item can be varied according
to actual situations. This principle applies throughout the manual.
6) If subscriber A picks up the phone, A can talk with subscriber B; however, if A is
busy or cannot pick up the phone in the specified time, the subscriber B will hear
the voice prompt “Sorry, your call is unsuccessful.” The XE IP PBX will
automatically deregister the callback-on-busy service.
II. Register for callback-on-busy service
Table 15-1 Register for the callback-on-busy service
Step Expected result
The subscriber calls and finds the callee
is busy.
The subscriber hangs up.
The subscriber picks up the phone
again.
The subscriber hears the dial tone.