D-1
3920-A2-GN31-30
November 1996
CCITT V.25bis Dialing
Command and Responses
Overview
D-1
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Call Request Commands
D-2
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Call Request with Number Provided (CRN)
D-2
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Call Request with Stored Memory Address Provided (CRS
)
D-2
. . . . . . . . . .
Call Response
D-2
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Call Failure Indication (CFI)
D-2
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Call Connecting (CNX)
D-3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Delayed Call Indicator
D-3
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Call Answer Commands
D-3
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Incoming Call (INC)
D-3
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Disregard Incoming Call (DIC)
D-3
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Connect Incoming Call (CIC)
D-4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Program Normal (PRN)
D-4
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Request List of Delayed Numbers (RLD)
D-4
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Request List of Forbidden Numbers (RLF)
D-4
. . . . . . . . . . . . . . . . . . . . . . . . . .
Request List of Stored Numbers (RLN)
D-5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List Delayed Numbers Response (LSD)
D-5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List Forbidden Numbers Response (LSF
)
D-5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
List Stored Number Response (LSN)
D-5
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Command Response
D-6
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Valid (VAL)
D-6
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Invalid (INV)
D-6
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Overview
This appendix describes V.25bis dialing commands and responses. CCITT V.25bis is an
international dialing protocol that permits direct and stored number dialing using DTEs in either
Asynchronous, bisynchronous, or HDLC operating mode. The 392xPlus modems support
V.25bis request and answer commands. As commands are entered from the DTE, the 392xPlus
modems issue a response to the DTE which indicates if the call failed or connected, or if the
command is valid or invalid.
The following sections discuss those V.25bis commands supported by the 392xPlus modems and
the response to those commands. Tables D-1 and D-2 list the V.25bis commands and response
messages.
NOTE
The 392x
Plus modem must be configured for V.25bis dialing.
Refer to DTE Dialer Type configuration option in Chapter 4,
DCP Configuration.
D
