Nortel Networks NTRN10AN manual Network sites, OPTera Metro 3500 and OMX interconnect

Operation, administration, and maintenance (OAM) features 2-49

Additional OMX modules are required for each DWDM band. The DWDM bands can be multiplexed onto one optical fiber to daisy-chain the OMX modules together.

OMX modules can be interconnected within the OMX shelf to provide a working and protection traffic path. A single OMX module supports unprotected traffic.

Figure 2-23

OPTera Metro 3500 and OMX interconnect

EX0783p

3500 shelf

λ8

3500 shelf

λ7

3500 shelf

λ6

3500 shelf

λ5

3500 shelf

λ4

3500 shelf

λ3

3500 shelf

λ2

3500 shelf

λ1

OMX shelf

OMX shelf

Single patch fiber

Single fiber

Note: Site Manager and Preside Network Manager do not support wavelength and OMX module visibility in Release 12.1.

Network sites

There are two types of sites in an OPTera Metro 3500 network:

•terminal sites

•optical add/drop multiplexer sites (OADM)

Terminal sites consist of OPTera Metro 3500 shelves that are provisioned as terminal shelves. At a terminal site, there must be a terminal shelf for every wavelength channel used in the network. Wavelengths must be added or dropped at a terminal location. Terminal sites are sometimes called hub sites when used in hubbed-ring configurations.

At an OADM site, single or multiple OPTera Metro 3500 shelves are placed to gain access to specific wavelengths in the system, so that some wavelengths are terminated, and some are optically passed through at that location. OADM sites are sometimes called remote sites.

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