Avaya 1140E - Multiuser; Initial Login

While on an active call
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Using call conferencing
You can use the Conference feature to establish a conference call
between the active call and calls on hold. The Conference feature is
available when you are on an active call.
To use call conferencing:
1. Enter the first phone number or SIP
address that you want to call.
2. Place the active call on hold.
3. Make a second call.
4. When the second call is connected,
choose one of the following methods to
establish a conference call:
Conf
— Press the Conf soft key and then
press the line button of the first held
call.
OR
Feature
— Press the Feature soft key.