15
DLM4000 User Guide
PN 161-09997-003A
Feb 2005
&Fn:
Restore modem Active Configuration Profile to factory default settings where:
&F0:
Restore FDP0 (error detection and data compression)
&F1:
Restore FDP1 (no error detection and data compression)
&L:
Leased or dial-up line selection.
&L0:
Sets the modem for dial-up line operation.
&L1:
Sets the modem for leased-line operation dedicated between two destinations.
&R:
Determines how the DLM4000 will react to CTS/RTS signals.
&R0:
CTS tracks the condition of RTS.
&R1:
RTS is ignored and the CTS is forced on.
&V:
Displays configuration profiles.
&V0:
Displays the ACA, SCP and current modem operational status.
&V1:
Displays the STN.
&W:
Writes the configuration profile.
&W0:
Writes ACP (active configuration profile) to SCP0.
&W1:
Writes ACP to the SCP1 (stored configuration profile 1).
&Y:
Selects a stored profile.
&Y0:
Sets SCP0 as the major SCP.
&Y1:
Sets SCP1 as the major SCP.
&Zn=:
Stores telephone number. For example AT&Z0=882-2206. Range: n = 0 to 9 which are memory locations
,:
The comma allows a pause to be inserted into a dialing string. The time of the pause is set in register S8 which defaults
to 2 seconds. For example ATDT,8822206.
\J:
This command controls serial port baud rate adjustment.
\J0:
Turns off port adjustment. The port speed is fixed regardless of the line speed. This is used when the
DLM4000 is in normal or reliable mode.
\J1:
Turns on the port adjustment. The modem automatically adjusts it’s port speed to match the on-line speed.
\N:
This selects the ECDC operation mode.
\N0:
Selects normal mode. Error-correction is disabled, but the data buffer is activated.
\N1:
Selects direct mode. Both error-correction and the data buffer are deactivated.
\N2:
Selects ECDC reliable mode. Both error-correction and the data buffer are activated.
\N3:
Selects auto-reliable mode. The DLM4000 will establish a reliable link or normal link depending on the
remote modem.
\Q:
This option determines which flow control method the DLM4000 uses.
\Q0:
Disables serial port flow control.
\Q1:
Uses bi-directional XON/XOFF hardware flow control.
\Q2:
Uses uni-directional CTS flow control. Data transmission from the local device stops if the DLM4000 turns
CTS off, and resumes when CTS is turned on.
\
Q3:
Uses bi-directional CTS/RTS flow control. The data transmission from the local device to the DLM4000 stops
when CTS is off, and resumes when CTS is on. Data transmitted from the DLM4000 to connected device
stops when RTS is off, and resumes when RTS is on. This assumes connected device uses handshaking.
\Q4:
The serial port does not respond to XON/XOFF flow control.
\Q5:
Uses uni-directional flow control as \Q2, but keeps CTS off until a connection is established.
\Q6:
Uses bi-directional hardware flow control just as \Q3 does, but keeps CTS off until a connection is
established.
