User guide

LTE TDD B2268H
User Guide
13 VoIP
Issue 01 (2014-01-15)
Copyright © Huawei Technologies Co., Ltd.
112

Call Transfer

Three-Way Conference

Do not Disturb
To take full advantage of the supplementary phone services available through the LTE Device's phone
ports, you may need to subscribe to the services from your VoIP service provider.
The Flash Key
Flashing means to press the hook for a short period of time (a few hundred milliseconds) before
releasing it. On newer telephones, there should be a "flash" key (button) that generates the
signal electronically. If the flash key is not available, you can tap (press and immediately
release) the hook by hand to achieve the same effect. However, using the flash key is preferred
since the timing is much more precise. With manual tapping, if the duration is too long, it may
be interpreted as hanging up by the LTE Device.
You can invoke all the supplementary services by using the flash key.
Europe Type Supplementary Phone Services
This section describes how to use supplementary phone services with the Europe Type Call
Service Mode. Commands for supplementary services are listed in the table below.
After pressing the flash key, if you do not issue the sub-command before the default sub-
command time-out (2 seconds) expires or issue an invalid sub-command, the current operation
will be aborted.
Table 13-6 European Flash Key Commands
COMMAN
D
SUB- COMMAND
DESCRIPTION
Flash
NA
Put a current call on hold to place a second call.
Switch back to the call (if there is no second call).
Flash
0
Drop the call presently on hold or reject an incoming
call which is waiting for answer.
Flash
1
Disconnect the current phone connection and answer
the incoming call or resume with caller presently on
hold.
Flash
2
1. Switch back and forth between two calls.
2. Put a current call on hold to answer an incoming
call.
3. Separate the current three-way conference call into
two individual calls (one is on-line, the other is on
hold).
Flash
3
Create three-way conference connection.
Flash
*98#
Transfer the call to another phone.