ZyXEL Communications Omni TA128 - Manual (Page 82)

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InterCom
With two phones connected, your TA128 can be used as an
intercom. Please follow the instructions below:
1. Pick up the telephone handset.
2. Press the Flash key and then press 2 on the phone keypad. The
other local phone will start to ring.
InterCom: ( с и H Flash è H #2
Call Waiting
The call waiting feature enables you to place a call on hold by
pressing the Flash key. If you press the Flash key again, the call
waiting function will be disabled and return to the previous call.
Call Waiting: H Flash
Placing a second call
When you have an active call on line, you may follow the
procedures below to make a second call:
1. Place the current call on hold by pressing the Flash key and 0.
2. Dial the phone number of the second party and wait for them
to answer.
Making a second call: H Flash è H #0 è H
Receiving a second call
If call waiting has been enabled, you will receive a signal through
the handset whenever a call is trying to come in while you are on-
line. To enable the call waiting function, use the AT Commands in
the table below:
AT Commands Description
ATS79.2=0
Disables call waiting for POTS port 1.
ATS79.2=1 Enables call waiting for POTS port 1(Default).