3Com S330 manual Alarm Meaning Troubleshooting Steps

		Managing System Alarms 175
Table 28 DS1/E1 UNI Module Alarms (continued)
Alarm	Meaning	Troubleshooting Steps
Port Missing ICP	Two consecutive ICP cells	See also Loss of IMA Frame (LIF). This is
Cells	missing from the IMA frame.	a specific cause of that alarm and will
		also be reported.

RFI IMA

ATM Forum (R-121)

Test Pattern Failed

Remote Failure Indication: Far end IMA Rx networking link state machines detected LOS, OOF, AIS. LCD, LIF or LODS.

An 8-bit pattern is sent to the remote node which must then echo it back on all ports. The local node checks the echoed pattern and reports an alarm if cells from one or more of the links fail to arrive. This alarm is declared on all links which do not reply or reply incorrectly.

Correct T1 or E1 facilities error.

Make sure that the same number of links are configured and enabled on both ends of the IMA configuration. Make sure that the configuration of both groups is the same. For instance, make sure that the payload scrambling setting is the same on both ends.

Yellow Alarm	OOF alarm is detected. A
	received remote alarm
	indication means that the far
	end equipment has a problem
	with the signal it is receiving
	from the PathBuilder device.

Connect an external loopback cable to the port. If there are no alarms, the problem is elsewhere. Check for an open, short, or wiring error in the cable between the PathBuilder network interface port and your service provider's network interface unit, or the terminal equipment. An open transmit pair can cause this condition