Huawei eSpace 7910 User Manual page 101

eSpace 7910&7950 IP Phone
User Guide
The following ACB modes are supported:
l
l
Using the ACB on Busy Function
In the UC2.X or IMS+UC network environment
Step 1 If your IP phone is deployed in the UC2.X, or IMS+UC network environment, you can
register the ACB function as prompted when the called party is busy.
Step 2 When detecting that the peer party is available, the system initiates a call to you.
Step 3 After you answer the call, the system initiates a call to the peer party.
Step 4 After the peer party answers the call, the call between you and the peer party is set up.
If the peer party still does not answer the call, you need to register the ACB on no answer
function.
----End
In the EC6.X network environment
Step 1 If your IP phone is deployed in the EC6.X or IMS network environment, you can press
Callback to register the ACB function when the called party is busy.
Step 2 When the peer party becomes idle, your phone displays the callback list, and an
announcement is played.
Issue 03 (2017-06-30)
After you enable the ACB on busy function, the system automatically calls you and the
called party once the called party changes from busy to onhook.
With the ACB on no answer function enabled, when the number you dial does not
answer, the system automatically calls you and the called party to set up a call once the
called party becomes online and ends the current call. The system considers the called
party online when detecting that the called party has call records.
NOTE
l Before using the ACB function, ensure that your account has been assigned the ACB rights. For any
questions, contact your system administrator.
l In the IMS+UC network environment, the IP Phone does not support ACB on no answer.
NOTE
l If the ACB function is successfully registered, the IP phone plays a registration success
announcement.
l In the EC6.X network environment, the callback service for a maximum of five numbers can be
registered. Each number corresponds to one callback record.
If your IP phone is deployed in the EC6.X or IMS network environment, you can press Callback to
register the ACB function when the called party is busy.
NOTE
If the ACB function is successfully registered,
NOTE
If the ACB function is successfully registered,
displayed, where you can check the registered callback records and the callback status of the peer
numbers, as described in Table
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is displayed in the status bar.
is displayed in the status bar and the callback list is
6-8.
6 Phone Usage
93