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- Hayes 2400 SmartModem compatible commands.
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- NOTE: Attention prefix (AT) precedes all command strings.
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- COMMAND DESCRIPTION ╔═════════════════╗
- ║ <1200> Commands ║
- B 0 CCIT format * ╚═════════════════╝
- 1 BELL format
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- E 0 commands not echoed
- 1 commands echoed *
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- L 0 speaker volume low
- 1 low
- 2 medium *
- 3 high
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- M 0 speaker always off
- 1 speaker on except while connected *
- 2 speaker always on
- 3 speaker on except while connected & dialing
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- Q 0 *
- 1 quiet mode
- NOTE: Attention prefix (AT) precedes all command strings.
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- COMMAND DESCRIPTION
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- V 0 numeric response codes
- 1 verbose response codes *
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- X 0 SM-300 compatibility mode
- 1 extended 'connect' msgs
- 2 dialtone detect
- 3 busy detect
- 4 dialtone and busy detect *
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- &J 0 RJ-11/41/45 jack *
- 1 RJ-12/13 (A A1 control leads)
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- &L 0 dialup async/sync *
- 1 leased line async/sync
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- &M 0 async *
- 1 sync mode 1 (async call placement)
- 2 sync mode 2 (stored number dial DTR)
- 3 sync mode 3 (manual dial DTR control)
- NOTE: Attention prefix (AT) precedes all command strings.
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- COMMAND DESCRIPTION
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- &G 0 no guard tones *
- 1 550 Hz guard tone
- 2 1800 Hz guard tone
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- &P 0 US 39%make 61%break pulse dial *
- 1 UK 33%make 67%break
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- &Y 0 no long space disconnect *
- 1 long space disconnect, recv & xmt
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- &C 0 carrier detect always on *
- 1 carrier detect follows signal
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- &D 0 ignore DTR *
- 1 DTR low = command mode (stays online)
- 2 DTR low = drop connection
- 3 DTR low = ATZ
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- NOTE: Attention prefix (AT) precedes all command strings.
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- COMMAND DESCRIPTION
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- &R 0 clear-to-send tracks RTS *
- 1 CTS for half-duplex transmit
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- &X 0 transmit clock internal *
- 1 clock from DTE pin 15
- 2 clock from rcv signal out pin 15
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- A enter answer mode
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- A/ execute last command
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- NOTE: Attention prefix (AT) precedes all command strings.
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- COMMAND DESCRIPTION
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- D (plus) T tone dial (Example: ATDT)
- P pulse dial
- R reverse mode (ans/orig)
- W wait for dialtone
- @ wait for quiet answer
- , pause
- ! flash
- ; return to command state
- S dial stored number
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- NOTE: Attention prefix (AT) precedes all command strings.
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- COMMAND DESCRIPTION
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- H 0 hang up (on-hook)
- 1 pickup line (off-hook)
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- O 0 return online
- 1 retrain equalizer & return online
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- Z reset configuration from stored profile
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- &F reset configuration from factory settings
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- &W store active profile
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- &Znn store one dial number
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- I 0 show product code
- 1 show checksum
- 2 verify checksum
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- NOTE: Attention prefix (AT) precedes all command strings.
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- COMMAND DESCRIPTION
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- &T 0 terminate any test
- 1 local analog loopback
- 3 local digital loopback
- 4 allow a remote digital loopback request
- 5 prohibit remote digital loopback request
- 6 initiate remote digital loopback
- 7 initiate rem dig loop with selftest
- 8 init local analog loopback with selftest
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- NOTE: Attention prefix (AT) precedes all command strings. Example: ATS4
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- Register 0 0-255 rings 00 ring to answer on
- 1 0-255 rings ring count
- 2 0-127 ascii 43 escape code char
- 3 0-127 ascii 13 carriage return char
- 4 0-127 ascii 10 line feed
- 5 0-127 ascii 08 backspace char
- 6 0-255 seconds 02 wait for dialtone
- 7 1-30 seconds 30 wait for carrier
- 8 0-255 seconds 02 pause time comma
- 9 1-255 .1 sec 06 carr detec resp
- 10 1-255 .1 sec 14 lost carrier hangup
- 11
- 12 0-255 .02 sec 50 escape guard time
- 13
- 14 none options register
- 15
- 16 none 00 modem test options
- 17
- 18 0-255 seconds 00 test timer
- 19
- 20
- NOTE: Attention prefix (AT) precedes all command strings. Example: ATS4
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- Register 21 none options register
- 22 none 76'x options register
- 23 none 07 options register
- 24
- 25 0-255 seconds 05 sync delay to DTR
- 26 0-255 seconds 00 RTS/CTS delay HD
- 27 none 00 options register
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- Result 0 OK acknowledge execution
- codes 1 CONNECT 0-300 bps connection
- 2 RING ring detected
- 3 NO CARRIER no connect or lost
- 4 ERROR error
- 5 CONNECT 1200 1200 bps connection
- 6 NO DIALTONE no dialtone found
- 7 BUSY busy signal
- 8 NO ANSWER @, no quiet answer
- 9 CONNECT 0600 600 bps connection
- 10 CONNECT 2400 2400 bps connection
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- NOTE: Telephone lines use the frequencies between 300 and 3000Hz.
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