Paradyne 3821PLUS manual ″ F ± Clear Error Buffer, ″ Hn ± V.42bis Compression, P1 ± Clone Remote

AT Commands and S-Registers

Table 4-1

(5 of 13)

3821Plus AT Commands

″F ± Clear Error Buffer

Clears the buffer where information about the last critical error is stored. For service personnel use only.

″ F Clear error buffer.

″Hn ± V.42bis Compression

Enables or disables V.42bis data compression.

″ H, ″ H0	Disable.
″ H1	Transmit only.
″ H2	Receive only.

″H3 Enable for transmit and receive.

&&P1 ± Clone Remote

Copies the firmware from the modem that receives the command to another 3821Plus 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 your service representative if you are unable to complete the cloning.

&Cn ± 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).

3821-A2-GB20-40 January 1999 4-7