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DLM4000 User Guide
PN 161-09997-003A
Feb 2005
S=n:
Instructs the modem to dial a stored number previously saved with the &Z command. For example, ATDTS=2. This
would dial a number stored in memory location 2.
Sr?:
Displays the contents of a particular S register. For example, ATS8?. This would display the value stored in register
S8.
Sr=n:
Changes the value in a particular register. For example, ATS8=1. This could change the value in register S8 to 1.
U3=n:
Sets the transmit level in the modem from 0 to a –15dB. To write this register value the string must end with
&W254.
Note: that a setting of zero dB may cause connection problems in some Telco circuits. This value must
match in both modems.
V:
This command instructs the DLM4000 to send response codes in a word or digital form.
V0:
Sends response codes in digital form.
V1:
Sends response codes in word form such as OK or CONNECT.
Xn:
This command determines which response codes shall be enabled and disabled.
X0:
This command enables the response codes
OK, CONNECT, RING, NO CARRIER and ERROR.
X1:
This command enables the response codes
OK, CONNECT, RING, NO CARRIER, ERROR and CONNECT 1200.
X2:
This command enables the response codes
OK, CONNECT, RING, NO CARRIER, ERROR, CONNECT 1200, NO DIAL TONE and NO ANSWER.
X3:
This command enables the response codes
OK, CONNECT, RING, NO CARRIER, ERROR, CONNECT 1200, BUSY and NO ANSWER.
X4:
This command enables the response codes
OK, CONNECT, RING, NO CARRIER, ERROR, CONNECT 1200, NO DIAL TONE, BUSY and NO ANSWER.
Z:
This command resets the modem.
Z1:
Resets the modem with SCP1(stored configuration profile 1).
Z2:
Resets the modem with SCP2(stored configuration profile 2).
&An:
Power-on autodial stored phone number n (see &Zn). &A99 disables power-on autodial.
&C:
This command determines how the DLM4000 reacts to carrier detect.
&C0:
Carrier detect is always forced on.
&C1:
The modem tracks the data carrier from the remote one and initializes carrier detect accordingly.
&C2:
Carrier detect is forced on during command state, but is tracked on connection.
&D:
This command determines how the DLM4000 reacts to DTR.
&D0:
Instructs the modem to ignore DTR.
&D1:
Instructs the modem to assume command state upon detection of DTR, but maintain an active line
connection.
&D2:
Instructs the modem to go on-hook, assume command state, and disable auto-answer upon the detection
of a DTR on-to-off transition.
&D3:
Instructs the modem to re-initialize itself when it detects a DTR. The ACP (active configuration profile) will be
overwritten by the SCP(stored configuration profile).
&D4:
Instructs the modem to deliver all buffered data before disconnecting to on-off transition.
