AT Command Set
MC35_ATC_01_V04.00 Page 14 of 238 02.04.2002
2 Standard V.25ter AT Commands
These AT Commands are related to ITU-T (International Telecomm unication Union, Telecommunica-
tion sector) V.25ter document.
MC35 supports the registers S0-S29. You can change S0,S3,S4,S5,S6,S7,S8,S10,S18 by us ing the
appropriate ATSn commands. All the other registers are read-onl y and for internal usage only!

2.1 A/ Repeat previous command line

Execute command
A/
Response
Repeats previous command line. Line does not need to end with terminating
character.
Parameter
Reference
V.25ter
Note
• After beginning with the character “a“ or „A“, a second character “t“ ,”T“ or “/“
has to follow. In case of using a wrong second character, it is necessar y to
start again with character “a“ or “A“.
• If autobauding is active (see +IPR, pg. 38) A/ (and a/) cannot be used.

2.2 +++ Switch from data mode or PPP online mode to command mode

Execute command
+++
Response
This command is only available during a CSD call or a GPRS connection. The
+++ character sequence causes the TA to cancel the data flow over the AT in-
terface and switch to command mode. This allows you to enter AT c ommands
while maintaining the data connection to the remote device or, accordingly, the
GPRS connection.
OK
To prevent the +++ escape sequence from being misinterpreted as data, i t must
be preceded and followed by a pause of at least 1000 ms. The +++ character s
must be entered in quick succession, all within 1000 ms.
Reference
V.25ter
Note:
• To return from command mode to data or PPP online mode: Enter ATO as de-
scribed in Chapter 2.17.