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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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V.21 - HANDSHAKE TIME
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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:
| 0-255
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Unit:
| .1 second
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Description:
| Sets length of V.21 handshake
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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
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V.25bis Command Set
CONNECT INCOMING CALLS
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Type:
| Immediate
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Format:
| CIC
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Description:
| Instructs the modem to answer an incoming call; if no call is currently incoming, a result of INV will be returned.
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CALL REQUESTED NUMBER
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Type:
| Immediate
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Format:
| CRN<#>
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Description:
| Dials the number given; it will ignore spaces and hyphens in the string.
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CALL REQUEST WITH ADDRESS
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Type:
| Immediate
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Format:
| CRSn
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Description:
| Dials the number stored in NVRAM location n
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DISREGARD INCOMING CALL
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Type:
| Immediate
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Format:
| DIC
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Description:
| Instructs the modem to ignore the incoming call, if the modem is set to automatically answer; if no call is currently incoming, a result of INV will be returned.
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PROGRAM NUMBER
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Type:
| Configuration
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Format:
| PRNn
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Description:
| Stores a phone number in memory address n.
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REQUEST LIST OF FORBIDDEN NUMBERS
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Type:
| Immediate
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Format:
| RFN
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Description:
| Requests the list of forbidden numbers from the modem; the modem is unable to dial numbers on this list until its power has been cycled; if this feature is not enabled, the modem will return INV.
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REQUEST LISTED NUMBERS
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Type:
| Immediate
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Format:
| RLN
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Description:
| Requests the modem to return the list of stored numbers in NVRAM; if no numbers are stored, the modem will return LSN.
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V.25bis Result codes
CALL FAILURE INDICATOR
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Type:
| Response
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Format:
| CFIxx
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Description:
| Indicates that the attempt to connect failed
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Response
| Name
| Description
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CFAB
| Abort
| The call was aborted because either no dialtone was detected or a character was received from the host computer.
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CFCB
| DCE
| Busy An incoming call was detected after the dialing command was issued
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CFET
| Engaged Tone
| A busy signal was detected
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CFFC
| Forbidden Call
| The number given is on the forbidden list
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CFNS
| Not Stored
| The memory address given did not contain a valid telephone number
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CFNT
| No Tone
| The remote party did not issue a response tone
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CFRT
| Ring Tone
| A responding tone was detected, but the call timed out before it was completed.
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CONNECTION
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Type:
| Response
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Format:
| CNX
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Description:
| A connection has been successfully established
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LIST OF NUMBERS
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Type:
| Response
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Format:
| LS
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Description:
| This code is given in response to a number just dialed
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LIST OF STORED NUMBERS
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Type:
| Response
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Format:
| LSN
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Description:
| This code is given in response to a RLN command
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LIST OF STORED FORBIDDEN NUMBERS
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Type:
| Response
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Format:
| LSF
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Description:
| This code is given in response to a RFN command; it indicates that the number is on the forbidden list and cannot be dialed.
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INCOMING CALL
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Type:
| Response
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Format:
| INC
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Description:
| An incoming call has been detected
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INVALID
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Type:
| Response
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Format:
| INV
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Description:
| The modem was issued an improper command, optional parameters maybe displayed. Response Description
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Response
| Description
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INVMS
| Message syntax error
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INVCU
| Unknown command
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INVPS
| Parameter syntax error
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INVPV
| Parameter value error
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VALID
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Type:
| Response
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Format:
| VAL
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Description:
| The command issued is valid and is being executed
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