User's Manual
V34bis Fax-modem - AJ 2885 P
AJ 2885 P - Page 29
default factory configuration. The autobaud must be changed to select a special speed. It
can be limited to the DTE autobaud - AT @A2 - which means that the modem still
recognises the terminal data format and speed but does not change the connection rate.
Or it can be disabled - AT @A0 - which means that both the DTE data format and speed,
and connection mode are selected by Commands.
The following picture lists all connection modes on the first row, and the configuration in full
autobaud and limited or disabled autobaud.
Rate - modulation
Modem autobaud :
AT@A1
DTE speed / AT command
DTE autobaud :
AT@A0
or
AT@A2
AT command
300 - V21
300 / -
@M0
1200T,75T - V23
Modem can not be autobaud
@M10
75R,1200T - V23
Modem can not be autobaud
@M11
1200 - V22
1200 / AT @OM2
@OM2 @M1
2400 - V22 Bis
2400 / AT @OM2
@OM2 @M2
4800 - V32
4800 / AT @OM2
@OM2 @M3
9600 V32
9600 / AT @OM2
@OM2 @M4
7200 - V32 Bis
V32Bis fall down speed
@OM2 @M9
12000 - V32 Bis
V32Bis fall down speed
@OM2 @M5
14400 - V32 Bis
V32Bis fall down speed
@OM2 @M6
2400 - V34
2400 / @OM3
@OM3 @M2
4800 - V34
4800 / @OM3
@OM3 @M3
7200 - V34
V34 fall down speed
@OM3 @M9
9600 - V34
9600 / @OM3
@OM3 @M4
12000 - V34
V34 fall down speed
@OM3 @M5
14400 - V34
V34 fall down speed
@OM3 @M6
16800 - V34
V34 fall down speed
@OM3 @M7
19200 - V34
19200 / @OM3
@OM3 @M8
21600 - V34
V34 fall down speed
@OM3 @M12
24000 - V34
V34 fall down speed
@OM3 @M13
26400 - V34
V34 fall down speed
@OM3 @M14
28800 - V34
V34 fall down speed
@OM3 @M15
31200 - V34
V34 fall down speed
@OM3 @M16
33600 - V34
>= 38400 / @OM3
@OM3 @M17
Notes :
V34 mode on lease line should be better used without the V8 preamble. This can be
achieved by the command AT @OM1 instead of AT @OM3.