Honeywell ERX350 User Manual page 169

6 Remote Communications
6.3 Call-In and Call-Out
Modem items are shared between the scheduled and alarm call in features. If the modem requires an
initialization string it must be set into item 491 along with an Init Delay (Item 821). The initialization
delay is applied so that the modem, having just been powered up, has a chance to stabilize before being
sent the initialization string. A dial prefix must be configured in item 492 and a hangup string in 494. The
Dialing Delay will take place following the issuance of the initialization string. Call in sequence, Trigger
Type and retry parameters are also shared between scheduled and alarm calls. Those will be discussed
later.
6.3.1.2 Scheduled Call-In
The ERX350 can initiate a call at a preset time. The time may have been manually specified, but on an
ongoing basis the host(s) is responsible for the schedule. At the end of each call the host is must set
item values that determine when the next call is to take place. That time will always be contained in items
334 and 335. Items 338 and 337 indicate the result of the latest call (or call attempt ). If only one host
exists, its phone number is set in item 339. If a second host exists, its number is set in item 1030. To
enable scheduled call in, at least phone number must be configured and item 333 must be set to either
Alarm and Scheduled Call In or Scheduled Call In Only.
6.3.1.3 Alarm Call-In
If alarm call in is configured and enabled, a call will be initiated whenever a new alarm occurs or, if in
RBX mode, an alarm condition clears. This requires a phone number in item 493 (and optionally in 785)
and item 333 must be set to either Alarm and Scheduled Call In or Alarm Call In Only.
6.3.1.4 Force schedule Call
If the Force Schedule Call (i1693) is configured and enabled, and the device does not attempt Schedule
Call In (i1693) in configured time for various reasons, the Force Schedule Call initiates Call In with the
server.
Note: By default, the Force Schedule Call is configured for 36 hours (2160 minutes).
Note: If the user wants to disable the Force Schedule Call feature, set the item i1693 value to 0.
6.3.1.5 Management of Multiple Phone Numbers
If multiple phone numbers are configured, item 1230 determines (along with the retry strategy) when and
if the second number is called. The setting will affect the behavior of scheduled and alarm calls
identically.
Call-In Sequence = BOTH:
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