Multi-Tech Systems MULTIMODEM MT2834ZDX - Manual (Page 11)

Chapter 3 – AT Commands, S-Registers, and Results Codes
Multi-Tech Systems, Inc. MT2834ZDX User's Guide 11
Command: $En V.42 Error Correction at 300 bps
Values: n = 0 or 1
Default: 0
Description:
$E0 V.42 error correction at 300 bps disabled.
$E1 V.42 error correction at 300 bps enabled.
Command: $EBn Asynchronous Word Length
Values: n = 0 or 1
Default: 0
Description:
$EB0 10-bit mode enabled.
$EB1 11-bit mode enabled.
Command: %En Escape Sequence Options
Values: n = 0–5
Defaults: 1 and 4
Description: %E0 Modem won’t escape.
%E1 +++AT<CR> method.
%E2 <BREAK>AT<CR> method.
%E3 Both +++AT<CR> and <BREAK>AT<CR> methods.
%E4 No OK response to +++AT<CR>.
%E5 OK response to +++AT<CR>.
Command: &Fn Load Default Configurations
Values: n = 0, 8, or 9
Default: 8
Description:
&F0 Load factory default values from ROM if &F8 was previously stored; load user default values
from non-volatile memory if &F9 was previously stored.
&F8 Read factory default values when &F is issued (effective only if you store &F8 using &W0).
&F9 Read values stored in non-volatile memory when &F is issued (effective only if you store &F9
using &W0).
Command: $Fn Enable/Disable Auto-Reliable Fallback Character
Values: n = 0 or 1
Default: 0
Description:
$F0 Do not fall back to non-error correction mode connect if <CR> is received during handshake.
$F1 Fall back to non-error correction mode connect if <CR> is received during handshake.
Command: %Fn Echo Frequency Canceller Offset Compensation
Values: n = 0 or 1
Default: 0
Description:
%F0 Disable echo canceller frequency offset compensation.
%F1 Enable echo canceller frequency offset compensation.
Command: #Fn Fallback Modes When Online
Values: n = 0, 1, or 2
Default: 2
Description:
#F0 No fallback when on line.
#F1 Fallback decrementally from maximum speed to 4800 bps as line conditions deteriorate.
#F2 Fallback decrementally to 4800 bps; fall forward when line conditions improve.
Command: &Gn Guard Tones
Values: n = 0, 1, or 2
Default: 0
Description:
&G0 Turn off ITU-T guard tones.
&G1 Turn on ITU-T 550 Hz guard tone.
&G2 Turn on ITU-T 1800 Hz guard tone.
Note: The ZDXK is locked to the ITU-T 1800 Hz guard tone (&G2).
Command: Hn On Hook/Off Hook
Values: n = 0 or 1
Default: None
Description:
H0 Go on hook (hang up).
H1 Go off hook.