Project Description

Tangent rings are taken as an example to illustrate the configuration of grooming at the optical layer.

Project R adopts a ring networking that comprises six ONEs: A, B, C, D, E and F. All of the ONEs are OADM stations. Figure 1 shows the networking diagram of Project R.

Figure 1 Networking diagram of Project R

In project R, the un-directional services are allocated as shown in Figure 2. There are two services between station B and station C. Between station A and station B, station B and station D, station C and station D, station D and station E, station D and station F there is one service respectively. All of the services are STM-64/OC-192 services.

Figure 2 Service allocation of Project R

Take station A and station C as an example to illustrate the configuration of grooming at the optical layer in the WSD9+RMU9 mode and the ROAM mode. The wavelength route at station A is shown in Figure 3. The wavelength route at station C is shown in Figure 4.

Figure 3 Services at station A of Project R

Figure 4 Services at station C of Project R