Nortel Networks NTRN10AN, 3500 manual 64Hardware feature descriptions

3-64Hardware feature descriptions

OC-192 DWDM G.709 FEC optical interface circuit pack

(See Table 8-11 on page 8-19in Part 2 of this guide for PEC codes)

The OC-192 DWDM G.709 FEC circuit pack is provisioned in the same way as other OC-192 circuit packs.

The OC-192 DWDM circuit pack and OMX are required to support DWDM topologies for OPTera Metro 3500.

Note 1: The OMX does not support 1535.04 nm wavelength.

Note 2: Additional wavelengths for DWDM C-Band may be introduced in the future.

Note 3: Supports ITU-T G.709/Y.1331 standard.

Section data communication channel (SDCC)

A DWDM OC-192 line carries a DCC channel that can be edited, provisioned, and deprovisioned.

Note 1: The maximum number of simultaneous SDCC-provisionable ports on an OPTera Metro 3500 shelf is 34 (the shelf must be equipped with eight unprotected OC-3x4 or OC-12x4 STS circuit packs in slots 3 through 10, and a protected pair of OC-48 or OC-192 circuit packs in slots 11 and 12).

Note 2: For Nortel Networks interworking and multi-vendor network scenarios, DCC interoperability can be achieved with the appropriate provisioning. See Optical Networks Data Communications Network Planning Guide, NTR710AM.

Forward Error Correction (FEC)

Forward error correction detects and corrects small burst errors of 8 bits on an STS-48 basis. The FEC feature adds some redundancy parity bits on the transmit side and removes the bits on the receive side. The OC-192 LR G.709 FEC and OC-192 DWDM G.709 FEC interfaces support standard encoding and decoding RS-8 (Reed-Solomon) as specific in ITU-T G.709/Y.1331 standards.

Alarm LED definitions

The following table lists the OC-192 DWDM interface circuit pack LEDs.

LED	Color	Description
Status (top)	Red	Circuit pack failure
	Yellow	Loss of signal
Status (bottom)	Green	In service and carrying traffic

OPTera Metro 3500 Multiservice Platform NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004