Motorola 3460 manual Data Mode

3460 Fast’R

Table 5-1. Troubleshooting the 3460 Fast’R Modem

Problem

Diagnosis/Test

Possible Solution

DATA MODE

The modem	Check that the modem	If the modem is not in data
connects, but	is in data mode (ATO)	mode, establish a connection
does not pass		with the remote modem.
data
	Check that the TD	Check computer for EIA signal
	LED is steady on or	requirements.
	flashing when data is	Ensure the modem is correctly
	being transmitted from	cabled to the computer (use a
	the computer,	straight-through cable for the
	indicating that the	RS-232 interface).
	modem is receiving the
	data from the
	computer.
	Check the computer’s	Ensure that the computer’s flow
	flow control method.	control is the same as the
		modem option (AT*FL).
		If your communications
		software’s file transfer protocol
		is used, and the software
		supports RTS/CTS Flow
		control, set Flow=RTS/CTS
		(AT*FL3). If the package does
		not support RTS/CTS flow
		control, set Flow=Off
		(AT*FL0).
	Verify line quality:	After running the RDL, if no
	• Run a remote digital	errors occur, the line is good.
	loopback (RDL) or	If errors occur, perform a
	RDL with pattern	manual retrain, or retry the
	test.	phone call.
	• Disconnect the	If the device fails, contact
	modem from the line	Motorola customer service.
	and perform a local	If the device passes, you may
	analog loopback	have a line problem (contact
	(LAL) or LAL with	your telephone company) or a
	pattern test (with	problem with your software
	modem flow control	(check with software vendor).
	off).

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