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ITU-T V.25bis Dialing Commands and Response
F-33810-A2-GB30-30 September 1998
Connect Incoming Call (CIC)
The CIC command forces the modem to cancel any
DIC commands and answer an incoming call. This
command is only valid when the DTE issues a DIC
command. CIC must be issued within 10 seconds after
sending a DIC. CIC is similar to the ATA command.
The CIC command format is CIC.
If CIC is issued within 10 seconds, the modem sends
the VAL response to the DTE. If CIC is issued after 10
seconds, INV is returned.
Program Normal (PRN)
The Program Normal (PRN) command allows the DTE
to enter and store a telephone number to a specific
directory location. PRN is similar to the AT&Z command.
The PRN command format is:
PRNx;n
Where: x is the directory location 1–10.
n is the telephone number.
Request List of Stored
Numbers (RLN)
The Request List of Stored Numbers (RLN) command
displays telephone numbers stored in the modem’s
directory location. If the RLN command is entered
without specifying a directory location, then all directory
locations and telephone numbers are displayed. If a
directory location is entered, then only that telephone
number are displayed.
The RLN command format is:
RLN
which displays all directory locations,
or
RLNx
Where: x is a directory location.
List Stored Number
Response (LSN)
LSN is a response to an RLN command issued by the
DTE. If a directory location is specified, then the
telephone number for that location is displayed. If no
directory location is specified, then all telephone numbers
stored in memory are displayed.
The LSN response format is:
LSNx;n
Where: x is the directory location.
n is the telephone number.
Command Response
A Command Response indicates that the command
entered was a valid or invalid entry. Command Response
includes Valid (VAL) and Invalid (INV).
Valid (VAL)
The VAL response indicates that the modem has
accepted the V.25bis command issued by the DTE. VAL is
similar to the AT result code OK.
Invalid (INV)
The INV response indicates that the modem has
received an incorrect V.25bis command from the DTE.
INV is similar to the AT result code ERROR.
The INV response format is:
INVxx
Where: xx is
CU command unknown
MS message syntax error
PS parameter syntax error
PV parameter value error