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Micro House PC Hardware Library Volume II: Network Interface Cards And Modems
by Micro House International, Inc. and Scott Mueller
Que, Macmillan Computer Publishing
ISBN: 078971664x Pub Date: 06/17/98
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DISTINCTIVE RING
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Type:
| Configuration
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Format:
| AT [cmds] $$Rn [cmds]
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Description:
| Selects whether the modem will use the Distinctive Ring function.
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Command
| Function
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$$R0 | Distinctive Ring disabled.
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$$R2
| Distinctive Ring enabled.
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DISTINCTIVE RING TYPES
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Format:
| AT [cmds] -SDR=n [cmds]
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Default:
| Unidentified
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Range:
| 0 - 7
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Description:
| Selects which distinctive ring signals the modem will respond to.
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Bit
| Value
| Function
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0
| 0
| Do not respond to distinctive ring type 1.
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1
| Respond to distinctive ring type 1.
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1
| 0
| Do not respond to distinctive ring type 2.
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1
| Respond to distinctive ring type 2.
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2
| 0
| Do not respond to distinctive ring type 3.
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1
| Respond to distinctive ring type 3.
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LINE SPEED
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Type:
| Register
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Format:
| AT [cmds] S37=n [cmds]
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Description:
| Sets the maximum allowable data exchange rate attempted during the handshaking process.
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Command
| Function
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S37=0 | Attempt to connect at fastest common speed.
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S37=1
| Set speed to 300bps.
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S37=2
| Set speed to 300bps.
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S37=3
| Set speed to 300bps.
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S37=5
| Set speed to 1200bps.
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S37=6
| Set speed to 2400bps.
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S37=7
| Attempt to connect with V.23.
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S37=8
| Set speed to 4800bps.
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S37=9
| Set speed to 9600bps.
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S37=10
| Set speed to 12Kbps.
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S37=11
| Set speed to 14.4Kbps.
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S37=12
| Set speed to 7200bps.
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MODE SELECTION
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Type:
| Immediate
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Format:
| AT [cmds] #CLS=n [cmds]
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Description:
| Selects which mode the modem will operate in.
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Command
| Function
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#CLS=0
| Modem will operate in data mode.
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#CLS=1
| Modem will operate in fax class 1 mode.
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#CLS=8
| Modem will operate in voice mode.
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MNP10EC MODE
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Type:
| Configuration
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Format:
| AT [cmds] -SEC=n [cmds]
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Description:
| Selects whether the modem will attempt to use MNP10EC mode during the handshaking sequence.
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Command
| Function
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-SEC=0
| MNP10EC handshaking disabled unless a V.34 connection is attempted via a cellular line.
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-SEC=1 | MNP10EC handshaking enabled.
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SPEAKERPHONE OPTIONS
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Type:
| Configuration
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Format:
| AT [cmds] #SPK=x,y,z [cmds]
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Description:
| Sets various options for speakerphone functions.
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Command
| Function
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x=0
| Microphone enabled.
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x=1
| Microphone disabled.
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x=2
| Microphone enabled with maximum gain, speaker disabled.
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y
| Default:
| 5
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Range:
| 0 - 16
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Unit:
| -2 dBm
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Description:
| Sets the attenuation level for speaker output in voice mode. A value of 16 will mute the speaker.
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z=0
| Microphone gain set to 0 dBm.
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z=1
| Microphone gain set to 6 dBm.
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z=2
| Microphone gain set to 9.5 dBm.
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z=3
| Microphone gain set to 12 dBm.
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SVD OPTIONS
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Type:
| Configuration
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Format:
| AT [cmds] $$ASn =xx [cmds]
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Description:
| Selects whether the modem will use SVD mode and selects the line source for it.
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Command
| Function
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$$ASn =OFF
| SVD enabled
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$$ASn =ON
| SVD disabled.
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n=1
| Telephone handset used for voice I/O with high data throughput.
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n=2
| Telephone handset used for voice I/O with high voice throughput.
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n=3
| Telephone line used for voice I/O with high data throughput.
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n=4
| Telephone line used for voice I/O with high voice throughput.
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n=5
| Speakerphone used for voice I/O with high data throughput.
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n=6
| Speakerphone used for voice I/O with high voice throughput.
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