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RTU-292 Operations Manual
7.8 RADIO CONTROL OPTION
When this software option is enabled, the RTU-292 may be used to control a Motorola URC-
200 radio connected to the unit via the RS-232 serial port. The control commands may be
entered by the RTU-292 front panel keypad, or by the keypad of a connected telephone or by a
telephone set wired to the Local Phone Option. To use front panel keypad control, the LINE-
PHONE and LINE-RADIO pushbuttons must both be off. See 7.7.1 for special instructions
regarding the use of the front panel keypad to send DTMF Commands.
The user must press either the HANDSET-PHONE or HANDSET SPEAKER pushbuttons in
order to hear the accompanying voice prompts.
The unit cannot be put into the DTMF Radio Command Mode unless dipswitch SW1-3 is
turned on. The DTMF Radio Command Mode must then be initiated via the * 8 Operational
Command before these DTMF Commands can be executed. (See Table 3-1.)
When a command has been entered, the RTU-292 will acknowledge the command with a tone
prompt. If an incorrect command is issued the unit plays the ERROR tone and gives the
"Invalid Entry" voice prompt. If the command is correct, but the data is out of range the unit
plays the ERROR tone and gives the "Data Was Not Accepted By The Radio" prompt.
Whenever a valid command is entered, the unit will play back the radio's setting after the
command is sent to the radio. Note that this feature is only available if the Voice Prompt
option is installed. Consult the URC-200 manual for further information regarding the
command descriptions.
NOTE
It is possible to enable this option remotely. If you have purchased an RTU-292
without this option and want to add it, contact JPS.
7.8.1 CONTROLLING THE RADIO VIA THE RTU-292 FRONT PANEL KEYPAD
When a Motorola URC-200 radio connected to the RTU-292 is programmed or controlled by
the RTU-292 via front panel (rather than a connected telephone or the Local Phone Option), the
following special instructions must be heeded. When using the front panel for radio control,
the operator uses the handset and keypad.
To begin front panel control the user must enter three "*" keypresses. The RTU-292 will
respond with an Acknowledge tone prompt and the voice prompt "READY". At this point all
front panel keypad entries are treated just as though the user were sending commands via the
telephone or local phone.
Front panel control operation will continue until one of the following conditions occurs:
• The user enters a "*#" sequence.
• There is neither PTT activity nor keypad activity for the duration of the activity timer.
JPS Communications, Inc.
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