Nortel Networks RTU-292 Operations Manual, 9 DTMF Radio Control Commands, Followed By

RTU-292 Operations Manual

While the operator is using the keypad to control the RTU-292, the unit will not be available for:

•PSTN Auto Answering.

•Radio Squelch Break Access Operation.

•Radio DTMF Access Operation.

•Local Phone Control.

Table 7-9DTMF Radio Control Commands

These commands are intended to control a Motorola URC-200 radio associated with the RTU-292. The Radio Control Option must be enabled (See Table 1-2).

Command	Followed By	Command Description
* 0	[0..9]	Channel (preset) select
* 1	[nnnnn]	Frequency Select (both receive and transmit)
* 2	[nnnnn]	Transmit frequency select
* 3	[0..1]	Scan mode (0 = scan stop, 1 = scan start)
* 4		Reserved for future use
* 5	[000..255]	Squelch select
* 6	[0..1]	Text mode select (0 = plain text, 1 = cipher text)
* 7	[0..1]	Modulation select (0 = AM, 1 = FM)
* 8	[0..2]	Power level select (0 = low, 1 = med, 2 = high)

*9 9 Saves the current radio channel (preset) data.

*# Leave Radio Command Mode (may be entered at any time).

With all of the above commands (except *3, *99, and *#), the user may substitute the DTMF "#" character in place of the “Followed By” data to query the radio for its current setting. For example, if the sequence "* 0 1" is entered, the RTU-292 will command to the radio to select channel 1. However if the sequence "* 0 #" is entered, the RTU-292 will play back the current channel number. (The Voice Prompt Option is required to take advantage of this playback feature.)

JPS Communications, Inc. 7-16