3. The line disconnects (goes off the hook).
4. The NX-534E listen-in module starts the call back window timer. If the time runs out
before the number of rings has been reached, the system returns to stand-by mode and
waits for a new trip.
5. The NX-534E listen-in module waits to receive the call back, up to the selected number
of minutes programmed in for the first ring.
6. The NX-534E listen-in module sends a continuous indicator tone to the central station
until the access code is received or the maximum number of attempts is exhausted. When
a code is received, the indicator tone is silenced.
7. The NX-534E listen-in module waits for the access code to match. The reset [#] key may
be used during PIN entry to clear the PIN buffer. If the access code does not match after a
set number of attempts, the system returns to stand-by mode and waits for a new trip. If
the code is validated, the system silences the siren and starts a two-way session.
Control levels
Levels of the modes may be changed at any time by pressing * followed by the level number you
wish to access on a touch-tone telephone. If no key is pressed for 3 seconds on the telephone, then the
buffer is automatically cleared. Press * on the telephone twice to return to the beginning.
•If a new alarm in the same partition is activated during a two-way session, the session timer can be
extended by pressing a key before the session times out.
•If a new alarm in a different partition is activated during a two-way session, the timer is reduced to
20 seconds, and cannot be extended.
Note: Levels 1, 2 and 4 are not supported. Attempts to access these levels will revert to Level 0.
Table 13. NX-534E control levels
Basic control level
0 Returns to the initial session settings when it is tripped. This includes the
microphone selection and audio mode.
1 High gain talk to the premises and extends the session time.
3 High gain listen-in from the premises and extends the session time.
2, 4, 5, 7, 8, 9 Extends the session time.
6 Low gain listen-in from the premises and extends the session time.
88 Terminates the session and starts the call back mode.
Level
0
99 Terminates the session and returns to the stand-by mode and waits for a new trip.
Microphone control (zoning)
0 Returns to the initial session settings when it was tripped. This includes the
microphone selection and audio mode.
1 Turns microphone 1 on, microphone 2 off, and extends the session time.
Level
3
2 Turns microphone 2 on, microphone 1 off, and extends the session time.
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