COMSPHERE 3900 Series Modems
14-12
September 1998
3910-A2-GN32-40
Table 14-2
(8 of 10)
391x Series AT Commands
AT
Command
DCP LCD
Command
Sequence
Description
&Vn
View Configuration Options. Displays each configuration group within the
Active (Operating), Active (Saved), Customer 1, and Customer 2
configuration areas as well as the telephone numbers stores in directory
locations 1–24.
&V0
Active (Operating) configuration options.
&V1
Active (Saved) configuration options.
&V2
Customer 1 configuration options.
&V3
Customer 2 configuration options.
&V4
Directory locations 1–24.
None
&Wn
Write (Save to Memory). Saves the current configuration options in
Active (Operating) to one of three configuration areas:
&W0
Saved to Active(Save).
&W1
Saved to Customer 1.
&W2
Saved to Customer 2.
Configure\Save
&Xn
Transmit Clock Source.
&X0
Internal. Modem provides transmit clock source for
synchronous data (Pin 15).
&X1
External. Modem derives external transmit clock source
provided on Pin 24 for synchronous data.
&X2
Receive Clock Loop. Modem derives transmit clock source
from receive signal for synchronous data (Pin 17).
Configure\Edit\
DTE Interface
&Zn=x
Store Telephone Numbers. Modem saves the telephone numbers and
dial command modifiers (if any) entered for x (up to 40 characters in
length) in Directory Location n (1–24). For example, the command
AT&Z1 = 5551234 stores the telephone number 555-1234 into directory
location 1.
To clear a telephone number from a memory location, issue the &Zn=x
command without entering a telephone number.
Call Setup\
Change
Directory
\An
Maximum Frame Size.
\A0
64 bytes.
\A1
128 bytes.
\A2
192 bytes.
\A3
256 bytes.
\A4
32 bytes.
\A5
16 bytes.
Configure\Edit\
V42/MNP/Buffer
\Cn
Error Control Negotiate Buffer.
\C0
Disable.
\C1
Enable.
\C2
Disables and switches modem to Buffer mode.
Configure\Edit\
V42/MNP/Buffer
