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13
DLM4000 User Guide
PN 161-09997-003A
Feb 2005
DLM4000 Command Descriptions
AT:
The attention command clears the command buffer must precede all command lines except A/ and +++.
A/:
This command re-executes the last command in the command buffer.
+++:
This is the escape sequence to take the modem from data mode to command mode.
An:
If n is not specified, answer incoming ring immediately. If n is specified, auto-answer after n rings where n is 1 to 255
B:
The B command defines the communications protocol as follows.
B0:
Selects CCITT protocol, which is used in Europe and most countries in the world.
B1:
Selects Bell protocol, which is mainly used in the U.S. and Canada.
E:
This command is used to enable or disable the echo of command characters and is only effective in command mode.
E0:
Disables the echo of command characters.
E1:
Enables the modem to echo command characters so they can be viewed and verified on the screen.
H:
This command instructs the modem to go on or off hook. On hook means hang-up where
H0:
Modem goes on-hook.
H1:
Modem goes off-hook.
L:
This command adjusts the volume of the modem speaker for call progress monitoring.
L0:
Selects low speaker volume.
L1:
Selects low speaker volume.
L2:
Selects medium speaker volume.
L3:
Selects high speaker volume.
M:
This is the speaker on-off control.
M0:
Turns the speaker off at all times.
M1:
Turns the speaker on until a connection is established.
M2:
Turns the speaker on at all times.
M3:
Turns the speaker on until carrier is detected, is turned off when
dialing.
N:
Sets the number of times the modems will redial if busy. The redial times counter is cleared to 0 after a connection is
made.
String: N=n Range: n=0-15 Unit: Time
Default: 0
:
Sets the interval between redials.
String: N5=n
Range: 0-255
Unit: 2 seconds
Default: 0
N?:
Displays the current settings of the DLM4000s redial times.
N5?:
Displays the interval time between redials.
P:
Instructs the modem to use pulse dialing to dial a number. ATDT P 882-2206
Q:
Enables or disables the sending of response codes after a command line is executed.
Q0:
Enable the sending of response codes.
Q1:
Disable the sending of response codes.