USRobotics 3Com - Manual (Page 12)

8
Technical Reference
Typing Commands
In terminal mode, type commands in either upper or lower case, not a combination. Use
the Backspace key to delete errors. You cannot delete the original AT command
because it is stored in the modem buffer.
If a command has numeric options and you do not include a number, zero is assumed.
For example, if you type ATB, the command ATB0 is assumed.
Every command except A/, +++, and A> must begin with the AT prefix and be entered
by pressing ENTER.
The maximum command length is 58 characters. This does not include the AT prefix,
carriage returns, or spaces.
All defaults are based on the &F1 Hardware Flow Control template loaded in NVRAM when
the modem is shipped.
AT Command Set
A Answer
> Repeat Last command forever
Bn (0,1) ITU-T/US answer sequence
D (0-9,#,*,,,;,!,@,L,”,R,S,W,$) Dial
En (0,1) Echo
Fn (0,1) Duplex On/Off setting
Hn (0,1) Offhook On/Off control
In (0,1,2,3,4,5,6,7,8,10) Inquiry
I0 Modem type
I1 DSP checksum
I2 Company & Product ID
I3 Product Revision
I4 Current Settings
I5 Profile Settings
I6 Connection Diagnostics
I7 Configuration Profile
I8 Blacklisting International only
I10 Plug and Play information
Ln (0,1,2,3)
Speaker volume. Note: assumes default = 2 (medium)
Mn (0,1,2,3) Speaker control
On (0,1) On line
P/T Pulse/Tone dialing
Qn (0,1,2,3) Quiet
Sr=n (0,1,...) Set S-Register, n=integer
Sr? Query contents of S register
S$
S register help screen
Vn (0,1) Verbal/Numeric return result codes
Xn (0,1,2,3,4,5,6,7) Result code options.
Yn (0,1,2,3,4) NVRAM template for power up.