Nortel Networks 3500, NTRN10AN manual Wan

Hardware feature descriptions 3-95

Note 3: If there is a 29-84 DS1 I/O module installed, and if slots 7 through 10 are not equipped with DS1 mappers, you may not install 4x100BT circuit packs in slots 7 through 10 (there is not enough room for slot 7 through slot 10’s 8xRJ-45 I/O modules).

The following table describes the compatibility of each I/O module with both shelf types.

Shelf	I/O module	I/O scenario description
OPTera Metro 3500 Shelf	8xRJ-45 Front I/O module	front access to the I/O
Assembly (NTN476AA,	(NTN452NA)
NTN476DA)
OPTera Metro Universal	8xRJ-45 Front Enhanced	front access to the I/O,
Shelf Assembly	I/O module (NTN452NH)	extended temperature
(NTN476AH)		range
	8xRJ-45 Rear I/O module	rear access to the I/O,
	(NTN452HB)	extended temperature
		range

Alarm LED definitions

The following table provides a list of the OPE 4x100BT circuit pack LEDs. See Figure 3-28 on page 3-47for the OPE 4x100BT circuit pack faceplate layout showing the location of the LEDs.

LED name	Color	Description
Status	red	Circuit pack failure
Active	green	The OPTera Packet Edge System circuit pack is
		active. At least one LAN facility is in service or at
		least one cross-connect exists.
WAN	yellow	The OPTera Packet Edge System circuit pack has
		at least one cross-connect. Either one or both WAN
		ports have an STS path problem.
Link (1-4)	yellow	No link pulse is detected on Ethernet port and the
		port is administratively up.

Planning and Ordering Guide—Part 1 of 2 NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004