Nortel Networks OPTera Metro 3500 - Manual (Page 297)

Hardware feature descriptions 3-69
Planning and Ordering Guide—Part 1 of 2 NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004
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.
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