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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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EXTENDED RESULT CODES
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Type:
| Configuration
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Format:
| AT [cmds] &An [cmds]
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Description:
| Selects extended result codes.
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Command
| Function
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&A0
| Extended result codes disabled.
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&A1
| Error correction result codes enabled.
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&A2
| V.32 result code enabled.
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&A3 | Error correction and compression result codes enabled.
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FLOW CONTROL CHARACTER - XOFF
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Type:
| Register
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Format:
| AT [cmds] S23=n [cmds]
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Default:
| 19
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Range:
| 0 - 127
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Unit:
| 1 ASCII character
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Description:
| Sets the character used to represent XOFF.
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FLOW CONTROL CHARACTER - XON
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Type:
| Register
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Format:
| AT [cmds] S22=n [cmds]
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Default:
| 17
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Range:
| 0 - 127
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Unit:
| 1 ASCII character
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Description:
| Sets the character used to represent XON.
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FLOW CONTROL - MODEM-TO-MODEM
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Type:
| Configuration
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Format:
| AT [cmds] &In [cmds]
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Description:
| Selects the type of modem-to-modem flow control used.
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Command
| Function
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&I0
| Software flow control disabled.
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&I1
| XON/XOFF pass-through enabled.
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&I2
| XON/XOFF pass-through disabled.
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&I3
| Hewlett-Packard ENQ/ACK host mode enabled.
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&I4
| Hewlett-Packard ENQ/ACK terminal mode enabled.
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&I5
| XON/XOFF pass-through enabled in normal mode and disabled in error-correcting mode.
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LOCK SERIAL PORT
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Type:
| Configuration
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Format:
| AT [cmds] &Bn [cmds]
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Description:
| Sets operation of serial port speed.
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Command
| Function
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&B0
| Serial speed follows connect speed.
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&B1
| Serial speed locked.
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&B2 | Serial speed locked in error correction mode only.
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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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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 handshaking phase.
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MOTOROLA, INC.
MODEMSURFR 56K (EXTERNAL)
Card Type
| Modem (asynchronous)
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Chip Set
| Rockwell
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Maximum Modem Rate
| 56Kbps
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Maximum Fax Rate
| 14.4Kbps
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Data Modulation Protocol
| 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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| Rockwell V.FC, K56+
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Fax Modulation Protocol
| 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
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Data Bus
| Serial
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CONNECTIONS
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Function
| Label
| Function
| Label
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DC power in
| CN1
| Telephone line in
| CN3
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Serial port
| CN2
| Telephone line out
| CN4
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DIAGNOSTIC LED(S)
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LED
| Color
| Status
| Condition
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TR
| Red
| On
| DTR signal is high
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TR
| Red
| Off
| DTR signal is low
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CD
| Red
| On
| Carrier signal detected
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CD
| Red
| Off
| Carrier signal not detected
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RD
| Red
| On
| Modem is receiving data
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RD
| Red
| Off
| Modem is not receiving data
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SD
| Red
| On
| Modem is transmitting data
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SD
| Red
| Off
| Modem is not transmitting data
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OH
| Red
| On
| Modem is off-hook
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OH
| Red
| Off
| Modem is on-hook
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RI
| Red
| On
| Power is on
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RI
| Red
| Blinking
| Phone is ringing
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RI
| Red
| Off
| Power is off
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