Pub. 42004-455B
Model 352-101, 352-102, 352-103, & 352-104 Div. 1 SMART Hazardous Area Telephones Page 13 of 17
f:\standard ioms - current release\42004 instr. manuals\42004-455b.doc
02/13
Basic Programming
The following programming command can be entered from any touch-tone telephone. Acceptance of a
data transfer command is indicated via a return code transmitted as an audible DTMF tone.
Call Time-out
The call time-out feature, which is used to limit the duration of calls, can be set between one minute and
4.5 hours. The time limit is set by entering a number from 120 to 32400.
This number represents the number of half-second increments of duration. Entering 0 results in a call
time-out of 4.5 hours.
Enter
*37<120~32400>#
to assign a time limit, or change an existing time limit.
*37
Data transfer command
<120~32400>
Call duration (60–16,200 seconds, 0 = 4.5 hours) – See example below.
#
End of sequence indicator
Multiply the desired time limit, in minutes, by 120 to determine the call duration.
Example: For a call duration of 5 minutes:
5 minutes
120 =
600
Therefore, enter the character string
*37600#
, and the telephone returns a DTMF check-digit.
Table 1. Basic Programming Commands
Command
Return
Description
Default
Setting
*37<120~32400># c Write Call Time-out (120–32400
½ sec, 0 disables) 10 min.
‘c’ in the above return fields is the success tone (DTMF check digit).
