COMSPHERE 3825Plus Modem
4-8
November 1996
3825-A2-GB30-20
Table 4-1
(6 of 14)
3825
Plus AT Commands
&&P1
Clone Remote
Copies the firmware from the modem that receives the command to another 3825
Plus modem. The modem must be in
Online Command mode. (Online Command mode is established with the +++ escape sequence.) The initial response to
the command is the message Cloning Remote, or one of several error messages, such as:
NO CIRCUIT
INCOMPATIBLE MODULATION
REMOTE ACCESS DISABLED
INVALID REMOTE PASSWORD
If the cloning is successful, the messages Clone Completed and OK are sent to the DTE. If the cloning fails, the ERROR
result code is preceded by an explanatory message:
Clone Aborted
Clone Failed: COMM
Clone Failed: SEQ
Clone Failed: Incompat. Config.
In the event of an error, the remote modem is placed in download-only mode, signaled by the slow flash of its MR/Pwr
LED. Contact Technical Support if you are unable to complete the cloning.
&C
n
LSD Control
Line Signal Detect (LSD) is a signal indicating that the carrier signal is being received from the remote modem. It is
normally turned Off to the DTE when the power level of the received carrier signal drops below the carrier detect
threshold.
&C0
Forced On. LSD ON at all times.
&C1
Standard RS232. LSD is ON when the remote modem’s carrier signal is detected. LSD is Off when
carrier signal is not detected.
&C2
Wink When Disconnect. LSD normally forced ON, turns Off for approximately one second upon disconnecting.
&C3
Follows DTR. State of LSD follows state of DTR.
&C4
Simulated Control Carrier. State of LSD follows state of remote modem’s RTS via V.13 simulated
control carrier signaling. Note that the remote modem’s RTS Action configuration option must be
set to Simulated Control Carrier.
&C5
DTR/Disconnect Off. State of LSD follows state of DTR except upon a disconnect where LSD
always turns Off. DTR must then toggle Off and ON to turn LSD ON. Use this setting for AT&T
DATAKIT applications. Note that to use this configuration option, the DTR Action configuration
option must be set to Stndrd_RS232 (&D1 or &D2).
&C6
Bridge Retrain. LSD behaves as if it were set for Standard RS232, except that it is turned Off when
a retrain condition lasts longer than 10 seconds, and turned ON when no retrain condition is
detected for 10 seconds.
&D
n
DTR Action
Data Terminal Ready (DTR) is a signal from the DTE to the modem indicating that the DTE is connected and ready for
operation.
&D0
Ignore. Modem ignores the true status of DTR and treats it as always ON.
&D1
Off=Command Mode. Modem enters online Command Mode if connected when DTR switches off.
&D2
Standard RS232. DTR Signal is controlled by the DTE.
&D3
Off=Reload Strap. Follows Standard RS232 operation, except that when DTR switches Off, the
modem loads the Active (Saved) area into the Active (Operating) area.
&D4
Controls On-Hook. Follows Standard RS232 operation, except that modem does not disconnect
until DTR is lowered by the DTE.
