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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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RESULT CODES
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Type:
| Configuration
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Format:
| AT [cmds] Qn [cmds]
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Description:
| Enables modem to send result codes to the DTE.
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Command
| Function
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Q0 | Result codes enabled.
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Q1
| Result codes disabled.
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Q2
| Result codes enabled in originate mode only.
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TONE DIALING TEST
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Type:
| Register
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Format:
| AT [cmds] S16=n [cmds]
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Description:
| Begins a tone dialing test.
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Command
| Function
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S16=0 | Tone dialing test disabled.
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S16=2
| Tone dialing test enabled.
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V.21 ANSWER MODE FALLBACK TIMER
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Type:
| Register
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Format:
| AT [cmds] S29=n [cmds]
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Default:
| 20
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Range:
| Unidentified
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Unit:
| .1 second
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Description:
| The function of this register is unidentified.
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V.32 HANDSHAKE TIME
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Type:
| Register
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Format:
| AT [cmds] S28=n [cmds]
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Default:
| 8
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Range:
| 0 - 255
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Unit:
| .1 second
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Description:
| Sets length of V.32 handshake. A value of 255 means that the modem will only accept connections with V.32 at 9600bps.
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V.34 MAPPING
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Type:
| Register
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Format:
| AT [cmds] S34=n [cmds]
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Default:
| 0
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Range:
| 0 - 15
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Description:
| Controls V.34 mapping, non-linear coding, transmit level deviation, pre-emphasis, and pre-coding.
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Bit
| Value
| Function
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0
| 0 | 8S-2D map enabled.
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1
| 8S-2D map disabled.
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1
| 0 | 16S-4D map enabled.
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1
| 16S-4D map disabled.
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2
| 0 | 32S-2D map enabled.
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1
| 32S-2D map disabled.
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3
| 0 | 64S-4D map enabled.
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1
| 64S-4D map disabled.
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4
| 0 | Non-linear coding enabled.
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1
| Non-linear coding disabled.
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5
| 0 | Transmit level deviation enabled.
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1
| Transmit level deviation disabled.
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6
| 0 | Pre-emphasis enabled.
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1
| Pre-emphasis disabled.
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7
| 0 | Pre-coding enabled.
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1
| Pre-coding disabled.
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V.34 OPTIONS
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Type:
| Register
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Format:
| AT [cmds] S33=n [cmds]
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Default:
| 0
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Range:
| 0 - 255
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Description:
| Controls V.34 baud rate and shaping.
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Bit
| Value
| Function
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0
| 0 | 2400 baud rate enabled.
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1
| 2400 baud rate disabled.
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1
| 0 | 2743 baud rate enabled.
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1
| 2743 baud rate disabled.
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2
| 0 | 2800 baud rate enabled.
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1
| 2800 baud rate disabled.
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3
| 0 | 3000 baud rate enabled.
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1
| 3000 baud rate disabled.
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4
| 0 | 3200 baud rate enabled.
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1
| 3200 baud rate disabled.
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5
| 0 | 3429 baud rate enabled.
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1
| 3429 baud rate disabled.
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6
| 0
| Not used.
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7
| 0 | Shaping enabled.
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1
| Shaping disabled.
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SPORTSTER 56K VOICE FAXMODEM (EXTERNAL)
Card Type
| Modem (asynchronous)
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Chipset
| U.S. Robotics
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I/O Options
| Voice, speakerphone, speaker out
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Maximum Data Rate
| 56Kbps
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Maximum Fax Rate
| 14.4Kbps
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Data Modulation
| Bell 103A/212A
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| ITU-T V.21, V.22, V.22bis, V.23, V.32, V.32bis, V.34
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| U.S. Robotics x2
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Fax Modulation
| ITU-T V.17, V.21CH2, V.27ter, V.29
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Error Correction/Compression
| MNP5, V.42, V.42bis
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Fax Class
| Class I & II
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Data Bus
| Serial
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CONNECTIONS
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Function
| Label
| Function
| Label
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AC power in
| CN1
| Serial port
| CN5
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Telephone line in
| CN2
| Power switch
| SW1
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Telephone line out
| CN3
| Volume
| VR1
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Speaker out
| CN4
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