Paradyne 3800PLUS manual Table C-4, Online Operation, Table C-5, Leased-Line Operation, Table C-6

COMSPHERE 3800Plus Modems

	Table C-4
	Online Operation
Symptom	Action
Data scrambled	Verify that the character format (data bits, parity, and stop bits) is set to the
	same value in both modems.
Missing data during a transfer	Verify that you are using the same method of flow control for both the modem
	and the DTE.
	If using XON/XOFF flow control, verify that the modem's parity matches the
	DTE's parity.

	Table C-5
	Leased-Line Operation
Symptom	Action
Modems do not train-up on leased lines	Verify that the correct cabling is used for your application. Refer to Chapter 2,
	Installation.
	Verify that one modem is configured for Answer mode and the other is
	configured for Originate mode.
	Verify that both modems are using the same modulation scheme.
	Verify that modems are configured for the appropriate leased-line mode. For
	example, if you have a 4-wire leased line, then the modems must be
	configured for 4-wire operation.
Modems are configured for dial backup,	Verify that both modems have the Auto Dial Backup configuration option
but do not switch to dial lines if leased	enabled.
lines fail

	Table C-6
	Dial Backup Operation
Symptom	Action
Dial backup line is present, but cannot	Verify that the correct telephone number for the remote modem is stored in
connect	directory location 1.
	Verify that one modem has the Auto Dial Backup configuration option set for
	Disable and the other has it set to Enable.
Modem does not switch back to	Verify that the Auto Dial Standby configuration option is enabled.
leased-line operation

C-4 November 1996 3980-A2-GB30-20