KE LOGEM LGH 28.8D1, Operation Manual, Page: 95 / 200

95
Operation Manual V.34 - Modems, Version 07/97
AT
Chapter 3
AT&H Halfduplex Simulation
A halfduplex simulation for duplex operation modes is defined acc. to
ITU-T V.13. If the control line S2 is activated at the local modem the remote
modem receives a control sequence. Then the remote modem activates
the report line M5. Any resetting of S2 causes a reset of M5 at the remote
modem. The control sequences S2 on or S2 off are transfered as data to
the remote modem. If your DTE runs a protocol these data should not
cause any problems. Halfduplex simulation acc. to V.13 is only applicable
for direct mode.
command parameter/default description
AT&H 0, 1 / 0 halfduplex simulation
0 no halfduplex simulation
1 halfduplex simulation acc. to
ITU-T V.13
3.9 Module Functions
ATSET(n)=x Software Selected DIP Switches
The command allows for software selection of features that can be set
with the DIP switches in compatible mode. Please refer to the switches
table of the compatible modems. The table of modulation procedures
(ATF(n) command) indicates the valid modulation procedure. The
command is a simple bridge between compatible and software mode.
The ATSET command allows for setting of different switches thus
facilitating to adjust all DIP switches with just two ATSET commands.
The features that may be selected with AT commands are not applicable
for the ATSET command.
Example: ATSET 1, 2, 3 = ON
ATSET 11, 12 = OFF (DIP switches 2.1 and 2.2)
command parameter/default description
ATSET(n)=x 0...14 (0...18 for software selected DIP switches
V.22bis operation)
x = ON or OFF
AT Commands