Honeywell ERX, User Manual, Page: 28 / 84

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Default: 5
787 Modem Retry Interval B Time (minutes) to wait before trying again if all
short-term retries have failed
Default: 1440
788 Modem Retry Count A Number of short-term retries
Note: Item 334 must be reset after a Scheduled Call-In; otherwise, the recorder will not call
again.
Alarm and Scheduled Call-In
The ERX Recorder, if configured, can initialize a call-in due to an alarm and a scheduled-call-in.
In this method, item 338 (Scheduled Call-In Occurred) may be used by the host system to
determine whether the call-in was triggered by an alarm or due to a scheduled call-in. A
scheduled call-in will have changed item 338 from ‘0’ to ‘1’ indicating that a scheduled call-in
occurred and not an alarm. Item 338 must have its value reset to a value of ‘0’ and item 334 must
be reset for the next scheduled call-in date after a Scheduled Call-In; otherwise, the recorder will
not call again.
To use this method, set the following items:
Item Code Set to
333 Call-In Trigger 3 Alarm & Scheduled Call-In
334 Scheduled Call-In Date Date of call
335 Scheduled Call-In Time Time of call
339 Scheduled Call-In Phone # Phone number to call at schedule time
789 Modem AT Enable 1 Call-In via AT commands
780 Modem Init String Initialization command of the Modem
Default: ATE0Q0V0X4
781 Modem Dial String Command sent to indicate dialing
Default: ATDT
784 Alarm Call-In Phone# Phone number to call due to an alarm
782 Modem Hang-up String Command sent to modem for hang-up
Default: ATH
786 Modem Retry Interval A Time (minutes) between short-term retries
Default: 5
787 Modem Retry Interval B Time (minutes) to wait before trying again if all
short-term retries have failed
Default: 1440
788 Modem Retry Count A Number of short-term retries
Modem Power Control--Call-out Window
Modem power control is used to conserve battery power by only applying power to a
communication device within an operating window when communication is desired. Modem
power control utilizes the alarm output channel of TB1; A- and A+ to control the power applied
to a communication device, such as, a modem, CDPD, or radio, etc.
Item 484, Alarm-Channel-Control must be configured to
Modem Power control instead of the
default Alarm Pulse output. This action defeats Alarm Pulse output.
The period that the communications device is powered is controled by item 791
Call-out Start
Time and item 783 Call-out Stop Time and further defined by item 792 Call-out Repeat
Interval and item 793 Call-out Keep Alive Time.