Longshine LCS-8056C2 - Manual (Page 23)

Commands for Host-Processed Modems Reference Manual
100498E Conexant 3-1
3 Data Command Set
3.1 Command Guidelines
The commands used to control and report modem operation in data modem mode are defined
in this section.
The Data Modem Mode commands and responses described in this section are applicable
when command +FCLASS=0. (See +FCLASS in Section 3.2.1 for the definition of the
FCLASS command.)
The default values are typical of a fully configured modem supporting all data rates and
options. The actual default value is dependent upon modem software as defined by the .INF
File.
Commands are accepted by the modem once the previous command has been fully executed,
which is normally indicated by the return of an appropriate result code. Execution of
commands D and A, either as a result of a direct command or a re-execute command, will be
aborted if another character is entered before completion of the handshake.
3.1.1 Escape Code Sequence
When the modem has established a connection and has entered on-line data mode, it is
possible to break into the data transmission in order to issue further commands to the modem
in an on-line command mode. This is achieved by the DTE sending to the modem a sequence
of three ASCII characters specified by register S2. The default character is '+'. The maximum
time allowed between receipt of the last character of the three escape character sequence from
the DTE and sending of the OK result code to the DTE is controlled by the S12 register.
3.2 Data Commands
The modem will respond to the commands detailed below. Parameters applicable to each
command are listed with the command description. The defaults shown correspond to default
values provided in the .INF File.