AT Command Sets (continued)
&Tn
&V
&V1
&Wn
&Yn
AT&T0
AT&T1
AT&T3
AT&T4
AT&T5
AT&T6
AT&T7
AT&T8
AT&W0
AT&W1
AT&Y0
AT&Y1
Loop Test Functions
Terminates test in progress.
Initiates local analog loopback.
Initiates local digital loopback.
Enables digital loopback acknowledgment for remote
request.
Disables digital loopback acknowledgment for remote
request. (Default)
Requests a remote digital loopback (RDL).
Requests a remote digital loopback (RDL) with self
test.
Initiates local analog loopback with self test.
Display Current Configuration and Stored Profiles
Reports the current (active) configuration, the stored
(user) profiles, and the four stored telephone numbers.
Display Modem Connect Status
Store Current Configuration
Stores the current configuration as profile 0.
Stores the current configuration as profile 1.
Profile Selection
The modem will use profile 0. (Default)
The modem will use profile 1.
Enable/ Disable Data Compression
Disables data compression.
Enables MNP 5 data compression negotiation.
Enables V.42bis data compression.
Enables both V.42bis and MNP 5 data compression.
(Default)
AT%C0
AT%C1
AT%C2
AT%C3
%C
&Zn=m
%En
AT%E0
AT%E1
AT%E2
Store Telephone Number
Stores telephone number for later use n= to 3,
m = dialstring.
Enable/Disable Line Quality Monitor and Auto-
Retrain or Fallback/Fall Forward
Disables line quality monitor and auto-retrain.
Enables line quality monitor and auto-retrain.
Enables line quality monitor and fallback/fall forward.
(Default)
Description
Command
11
AT Command Sets (continued)
\An
\Bn
\Kn
(A)
(B)
(C)
AT\A0
AT\A1
AT\A2
AT\A3
AT\B1-
\B9
\K0
\K1
\K2
\K3
\K4
\K5
\K0
\K1
\K2
\K3
\K4
\K5
\K0
\K1
\K2
\K3
\K4
\K5
Select Maximum MNP Block Size
64 characters.
128 characters. (Default)
192 characters.
256 characters.
Transmit Break to Remote
Break length in 100 ms units. (Default=3.) (Non-error
corrected mode only.)
Break Control
Break received from DTE while in connect state during
on line mode:
Enter on-line command mode, no break sent to the
remote modem.
Clear data buffers and send break to remote modem.
Same as 0.
Immediately send break to remote modemy.
Same as 0.
Send break to remote modem in sequence with
transmitted data. (Default)
\Bn command; received from DTE while in on line
command state:
Purge buffers, immediately send break to remote
modem.
Purge buffers, immediately send break to remote
modem.
Immediately send break to remote modem..
Immediately send break to remote modem.
Send break to remote modem with data.
Send break to remote modem with data.
Break received from remote modem while in connect
state during non error corrected connection:
Purge buffers, immediately send break to DTE.
Purge buffers, immediately send break to DTE.
Immediately send break to DTE.
Immediately send break to DTE.
Send break to DTE in sequence with data.
Send break to DTE in sequence with data.
Command
Description
12