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14400BPS FAXMODEM (INTERNAL)
ZOOM TELEPHONICS, INC.
14400BPS FAXMODEM (INTERNAL)
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Card Type
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Fax, Modem (asynchronous)
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Chip Set
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Unidentified
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Maximum Data Rate
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14.4Kbps
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Maximum Fax Rate
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14.4Kbps
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Data Bus
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8-bit ISA
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Fax Class
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Class I & II
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Data Modulation Protocol
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Bell 103/212A
ITU-T V.21, V.22A/B, V.22bis, V.23, V.32, V.32bis
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Fax Modulation Protocol
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ITU-T V.17, V.21CH2, V.27ter, V.29
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Error Correction/Compression
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MNP5, V.42, V.42bis
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CONNECTIONS
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Function
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Label
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Function
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Label
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Line in
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CN1
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Line out
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CN2
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SERIAL PORT ADDRESS/INTERRUPT SELECTION
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Setting
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IRQ
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JP1
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JP2
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COM1 (3F8h)
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4
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Pins 3 & 5, 4 & 6 closed
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Pins 1 & 3 closed
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COM2 (2F8h)
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3
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Pins 2 & 4, 3 & 5 closed
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Pins 2 & 4 closed
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COM3 (3E8h)
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4
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Pins 1 & 3, 4 & 6 closed
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Pins 1 & 3 closed
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í COM4 (2E8h)
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3
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Pins 1 & 3, 2 & 4 closed
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Pins 2 & 4 closed
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COM5 (3E8h)
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2
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Pins 1 & 3, 4 & 6 closed
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Pins 4 & 6 closed
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COM6 (2E8h)
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2
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Pins 1 & 3, 2 & 4 closed
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Pins 4 & 6 closed
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COM7 (3E8h)
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5
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Pins 1 & 3, 4 & 6 closed
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Pins 3 & 5 closed
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COM8 (2E8h)
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5
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Pins 1 & 3, 2 & 4 closed
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Pins 3 & 5 closed
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Proprietary AT Command Set
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AUTO-RETRAIN - AUTO-FALLBACK/FALL-FORWARD
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Type:
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Configuration
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Format:
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AT [cmds] %En [cmds]
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Description:
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Controls auto-retrain mode and fallback/fall-forward
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Command
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Function
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í %E0
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Auto-retrain disabled
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%E1
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Auto-retrain enabled
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%E2
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Auto-fallback/fall-forward enabled
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%E3
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Auto-fallback/fall-forward with fast hang-up enabled
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BIT MAPPED REGISTERS
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Register
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Default
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S14
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Unidentified
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S16
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Unidentified
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S21
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Unidentified
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S22
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Unidentified
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S23
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Unidentified
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S27
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Unidentified
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S28
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Unidentified
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S31
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Unidentified
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S40
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Unidentified
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S41
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Unidentified
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BREAK SEND
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Type:
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Configuration
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Format:
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AT [cmds] \Bn [cmds]
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Default:
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3
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Range:
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1-9
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Unit:
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.1 second
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Description:
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Sends break to modem
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BREAK TYPE
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Type:
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Configuration
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Format:
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AT [cmds] \Kn [cmds]
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Default:
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Unidentified
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Range:
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Unidentified
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Description:
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Configures action of break signal
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DIAL
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Type:
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Immediate
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Format:
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AT [cmds] D<#> [cmds]
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Description:
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Dials telephone number according to any modifiers included in the string
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Note:
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Any combination of modifiers can be used to produce the desired dial functions in sequence.
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Modifier
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Function
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L
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Re-dial last number
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P
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Pulse dialing enabled
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R
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Command accepted, not acted upon.
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S=n
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Dial stored telephone number n (n=0-3)
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T
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Tone dialing enabled
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W
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Dialing resumed following dial tone detection
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,
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Dialing paused for amount of time specified in S8 register
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@
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Wait for 5 seconds of silence
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;
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Modem returned to command state after dialing
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!
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Modem commanded to go off-hook for specified time before returning on-hook.
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^
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Calling tone enabled
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COMPRESSION
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Type:
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Configuration
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Format:
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AT [cmds] %Cn [cmds]
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Description:
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Selects data compression
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Command
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Function
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%C0
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Data compression disabled
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%C1
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MNP5 enabled
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%C2
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V.42bis enabled
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í %C3
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MNP5 and V.42bis enabled
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CONNECT MODE
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Type:
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Configuration
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Format:
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AT [cmds] \Nn [cmds]
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Description:
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Controls the type of connection the modem will operate in
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Command
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Function
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\N0
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Normal mode enabled
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\N1
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Direct mode enabled
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\N2
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Reliable mode enabled
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í \N3
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Auto-reliable mode enabled
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\N4
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V.42 reliable mode enabled
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\N5
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MNP reliable mode enabled
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FLASH DIAL MODIFIER TIME
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Type:
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Register
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Format
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AT [cmds] S29=n [cmds]
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Default:
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0
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Range:
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0-255
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Unit:
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.01 second
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Description:
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Time the modem will go on-hook upon receiving the ! dial modifier in dial string. S29=0 will disable.
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FLOW CONTROL
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Type:
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Configuration
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Format:
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AT [cmds] \Gn [cmds]
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Description:
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Selects modem port flow control
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Command
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Function
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í \G0
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Flow control disabled
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\G1
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Flow control enabled
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FLOW CONTROL
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Type:
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Read-only Register
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Format
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AT [cmds] S39? [cmds]
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Description:
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Displays the current flow control
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Value
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Meaning
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0
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Flow control disabled
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í 3
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RTS/CTS flow control enabled
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4
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XON/XOFF flow control enabled
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5
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Transparent XON flow control enabled
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6
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Transparent XON/XOFF flow control enabled
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FLOW CONTROL CHARACTER - XOFF
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Type:
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Register
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Format:
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AT [cmds] S33=n [cmds]
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Default:
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19
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Range:
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0-255
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Unit:
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ASCII
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Description:
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Sets the character used to represent XOFF
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FLOW CONTROL CHARACTER - XON
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Type:
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Register
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Format:
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AT [cmds] S32=n [cmds]
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Default:
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17
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Range:
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0-255
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Unit:
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ASCII
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Description:
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Sets the character used to represent XON
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INACTIVITY TIMER
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Type:
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Register
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Format:
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AT [cmds] S30=n [cmds]
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Default:
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0
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Range:
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0-255
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Unit:
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10 seconds
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Description:
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Sets the length of time that the modem does not receive information before it disconnects. S30=0 will disable timer.
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LINE SIGNAL LEVEL
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Type:
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Immediate
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Format:
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AT [cmds] %L [cmds]
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Description:
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Returns a value which indicates the received line signal level (-dBm)
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LINE SIGNAL QUALITY
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Type:
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Immediate
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Format:
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AT [cmds] %Q [cmds]
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Description:
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Returns a value which indicates line signal quality
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MAXIMUM BLOCK SIZE FOR TRANSMISSION
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Type:
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Configuration
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Format:
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AT [cmds] \An [cmds]
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Description:
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Sets the maximum transmittable block size
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Command
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Function
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\A0
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MNP block size is 64 characters
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í \A1
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MNP block size is 128 characters
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\A2
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MNP block size is 192 characters
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\A3
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MNP block size is 256 characters
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MNP - STREAM/BLOCK MODE
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Type:
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Configuration
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Format:
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AT [cmds] \Ln [cmds]
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Description:
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Selects the transfer mode for MNP link
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Command
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Function
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í \L0
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Stream mode for MNP enabled
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\L1
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Block mode for MNP enabled
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REPORT INFORMATION
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Type:
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Immediate
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Format:
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AT [cmds] In [cmds]
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Description:
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Displays information requested
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Command
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Function
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I0
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Reports 3-digit product code
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I1
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Reports ROM checksum
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I2
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Tests and reports ROM checksum
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I3
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Reports firmware revision code
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I4
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Reports faxmodem identifier string
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I5
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Reports country code
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I6
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Reports data pump model and revision code
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SLEEP TIMER
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Type:
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Register
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Format
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AT [cmds] S24=n [cmds]
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Default:
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0
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Range:
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0-255
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Unit:
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1 second
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Description:
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Maximum duration of DTE and DCE inactivity allowed prior to initiating low-power sleep mode.
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