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RTU-292 Operations Manual
4.2 FRONT PANEL BUTTONS AND INDICATORS..............................................................................4-19
4.3 MAIN BOARD..................................................................................................................................... 4-19
4.3.1 AUDIO BUS ARRANGEMENT.................................................................................................. 4-19
4.3.2 TELEPHONE INTERFACE CIRCUITS......................................................................................4-20
4.3.3 RADIO INTERFACE CIRCUITS ................................................................................................4-21
4.3.4 HANDSET/ SPEAKER INTERFACE......................................................................................... 4-22
4.3.5 DSP MODULE ............................................................................................................................. 4-22
4.3.6 DSP SOFTWARE.........................................................................................................................4-22
4.3.7 POWER SUPPLY.........................................................................................................................4-24
4.3.8 CPU............................................................................................................................................... 4-24
4.3.9 PROMPT TONE GENERATOR.................................................................................................. 4-25
4.4 OPTION INTERFACE BOARD .......................................................................................................... 4-25
4.5 VOICE PROMPT OPTION..................................................................................................................4-25
4.5.1 SPEECH PROCESSOR................................................................................................................ 4-25
4.5.2 CONTROL PROCESSOR ............................................................................................................4-25
4.5.3 VOICE PROMPT SOFTWARE ...................................................................................................4-26
4.6 LOCAL PHONE OPTION ...................................................................................................................4-26
4.6.1 INTERFACE CIRCUITRY ..........................................................................................................4-26
4.6.2 DIAL/BUSY GENERATORS ......................................................................................................4-26
4.6.3 LOCAL TELEPHONE LINE INTERFACE................................................................................. 4-26
5 REMOTE CONTROL PROTOCOL.......................................................................................................... 5-1
5.1 GENERAL..............................................................................................................................................5-1
5.2 RS-232 REMOTE CONTROL OVERVIEW .........................................................................................5-1
5.3 COMMANDS SENT TO THE RTU-292............................................................................................... 5-1
5.3.1 NULL Command ............................................................................................................................5-3
5.3.2 Auto Answer Command..................................................................................................................5-3
5.3.3 Audible Ring Command..................................................................................................................5-3
5.3.4 Date Command................................................................................................................................5-4
5.3.5 Dial Command ................................................................................................................................5-4
5.3.6 Disconnect Command ..................................................................................................................... 5-5
5.3.7 DTMF Command............................................................................................................................5-5
5.3.8 Handset Phone Command ............................................................................................................... 5-6
5.3.9 Handset Radio Command................................................................................................................5-6
5.3.10 Speaker Phone Command ...............................................................................................................5-7
5.3.11 Speaker Radio Command................................................................................................................ 5-7
5.3.12 Speed Dial Command......................................................................................................................5-8
5.3.13 Tel-Line Phone Command .............................................................................................................. 5-9
5.3.14 Tel-Line Radio Command............................................................................................................... 5-9
5.3.15 Time Command.............................................................................................................................5-10
5.3.16 Software Version Command .........................................................................................................5-10
5.4 STATUS RETURNED FROM THE RTU-292 ....................................................................................5-11
5.4.1 NULL Response............................................................................................................................5-12
5.4.2 Auto Answer Response................................................................................................................. 5-12
5.4.3 Call Starting Response ..................................................................................................................5-12
5.4.4 Dial Response................................................................................................................................5-13
5.4.5 Disconnect Response .................................................................................................................... 5-13
5.4.6 DTMF Response ........................................................................................................................... 5-13
5.4.7 Elapsed Time Response ................................................................................................................ 5-14
5.4.8 Handset Phone Response .............................................................................................................. 5-14
5.4.9 Handset Radio Response...............................................................................................................5-14
5.4.10 Speaker Phone Response............................................................................................................... 5-15
5.4.11 Speaker Radio Response............................................................................................................... 5-15
5.4.12 Speed Dial Response..................................................................................................................... 5-16
5.4.13 Tel-Line Phone Response.............................................................................................................. 5-16
5.4.14 Tel-Line Radio Response.............................................................................................................. 5-16
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