XM1240S AT Command Reference Manual
No. XM1240S-A00-106
xmodus swiss GmbH
7 / 46
2.2.2 Command Line Editing
The character <BS> is interpreted as a request from the DTE to the modem to delete
the previous character.
2.2.3 Command Line Echo
The modem may echo characters received from the DTE during command state and
online command state back to the DTE, depending on the setting of the ATEn
command. If so enabled, characters received from the DTE are echoed in the same
format as received.
2.2.4 Repeating a Command Line
If the prefix “A/” or “a/” is received, the modem immediately executes once again the
body of the preceding command line. No editing is possible, and no termination
character is necessary. A command line may be repeated multiple times in this
manner. Responses to the repeated command line are issued using format of the
original command line. If “A/” is received before any command line has been
executed, the preceding command line is assumed to have been empty (that results
in an OK result code).
2.2.5 Factory Settings
The parameter settings of the isdn-modem are pre-configured by the factory defaults.
This factory defaults can be reloaded at any time by using the AT&F command. The
parameter settings will be changed when using any AT commands which affects the
configuration of the modem. This changes can be permanently stored by using the
AT&W command. The factory defaults are identified for each command and in the S-
Register descriptions. A configuration (profile) consists of a subset of S-Registers.
AT&F
= Restore factory configuration.
AT&W
= Store current configuration.
Result codes:
OK
2.2.6 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 (default 1 sec.). The escape
characters will be transmitted transparent to the remote side.
Example:
[1s pause] <+><+><+> [1s pause]
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