Nortel Networks 3500, NTRN10AN manual STS-1 path trace for OC-48

Hardware feature descriptions 3-69

Table 3-10

OC-48 STS optical wavelength

OC-48 STS circuit pack	Wavelength
Short Reach (SR)	1310 nm
Intermediate reach (IR)	1310 nm
Long reach (LR)	1550 nm

STS-1 path trace for OC-48

OPTera Metro 3500 supports path trace capability for OC-48 services. Path trace is a 64 byte ASCII string that can be provisioned by the user. Path trace is transmitted through the J1 byte of the STS Path Overhead. It can be used by STS path terminating equipment (PTE) to verify its continued connection to the intended transmitting STS PTE.

Section trace for OC-48

OPTera Metro 3500 supports section trace capability for OC-48 services. Section trace provides a diagnostic tool that can determine installation and commissioning problems such as misconnected optical fibers. Section trace occupies the J0 SONET byte (formerly known as the C1 byte to indicate the STS-1 ID) of the section overhead. Section trace is injected at the transmit end of a section and extracted at the receive end where it can be checked against an expected section trace value.

Section data communication channel (SDCC)

An OC-48 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.

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