Nortel Networks 3500, NTRN10AN 2x100BT-P2P circuit pack NTN433AA, DS3/VT protection switching

Hardware feature descriptions 3-91

For more information about supported DS3 PM parameters for the DS3VTx12 mapper, see Table 2-23 on page 2-108.

For more information about supported DS1 PM parameters for the DS3VTx12 mapper, see Table 2-24 on page 2-109.

Equipping rules

The DS3VTx12 mapper can be installed in slots 3 through 10. DS3VTx12 mappers are installed in pairs. The first DS3VTx12 mapper of the pair is installed in an odd slot. The second DS3VTx12 mapper of the pair is installed in the adjacent even slot. The second DS3VTx12 mapper functions as the protection DS3VTx12 mapper for the working mapper in the odd slot.

Note: The maximum number of working DS3VTx12 mappers that can be inserted in an OPTera Metro 3500 shelf is four.DS3/VTx12 mapper is supported on OPTera Metro 3500 shelves equipped with VTX- series circuit packs in slots 13 and 14.

DS3/VT protection switching

DS3VTx12 protection switching is 1+1 non-revertive. If a working DS3VTx12 mapper becomes defective, the traffic is switched to the protection DS3VTx12 mapper. Switching can also take place under user control.

Alarm LED definitions

The following table provides a list of the DS3VTx12 mapper LEDs. See Figure 3-28 on page 3-47for the DS3VTx12 mapper faceplate layout showing the location of the LEDs.

LED	Color	Description
Status	Red	Circuit pack failure
Active	Green	DS3x12 equipment is active and at least one DS3
		line facility is in service with at least one
		cross-connect
LOS (1-12)	Yellow	Loss of signal on the port

2x100BT-P2P circuit pack (NTN433AA)

This circuit pack gives users native Ethernet, using standard STS-1 or STS-3c connections without the need for SNMP or BCC management.

Note 1: The 2x100BT-P2P circuit pack only supports far-end link conditioning at 100Mb/s (100BASE-TX).

Note 2: The 2x100BT-P2P circuit pack is only supported in the operational temperature range of 0°C to 50°C (32°F to 122°F).

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