Electronics Line infinite prime, Installation Manual, Page: 41 / 113

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5.2.4: TWA Follow-Me
The TWA Follow-Me feature is designed to establish a Two-Way Audio connection with
the user in the event of an alarm. For this feature to function, the account’s protocol must
be defined as TWA Follow-Me.
The sequence for a Two-Way Audio Follow-me call is as follows:
1. An alarm occurs.
2. The control system dials the programmed telephone number and
sounds two DTMF tones when you pick up the call.
3. Press " 2 " on your telephone; the control system opens the audio channel.
,
If you press “9” to answer the call, the control system simultaneously cancels the siren
when opening the audio channel.
4. If the TWA mode is defined as “Simplex”, ( see 10.6.12: TWA Mode ),
the audio channel opens in Listen mode (microphone active/speaker
mute). To switch to Speak mode, press “
1 ” on your telephone. To
switch back to Listen mode, press “ 0 ” on your telephone.
5. The duration of the call is determined by the TC/VM Timeout. Ten
seconds before the timeout expires, two short DTMF tones are
sounded. To extend the call, press “
7 ” on your telephone. This
command restarts the timeout.
6. To disconnect before the end of the timeout, press “
@
” then “ # ” on
your telephone.