Zte Unitrans ZXMP M600 Technical Instructions page 63

3. OMD board
To add/drop 8+1 wavelengths at Node A, OMD5-1 and OMD4-5 boards should
be used together. Two OMD5-1 boards should be configured to implement
transceiving in two optical line directions.
4. OAD board
OAD3 boards should be configured to add/drop 2+1 wavelengths at Nodes B, C,
D and E, to directly connect 2 wavelengths at Nodes B, C and D, and to directly
connect 6 wavelengths at Node E. The wavelengths to be added/dropped on the
OAD3 boards should be determined according to the requirements as shown in
Fig. 4.3-2.
5. OTUq board
OTUq boards should be configured at Nodes B, C and E as each node need to
transfer two channels of services. The two channels of services in Nodes B and
C occupy the same wavelength though they are in different transmission
directions. The two channels of services in Node E occupy different
wavelengths.
Based on the transmission distance, the optical module of the OTUq boards
should be selected to transfer the wavelengths.
6. OTUp+ board
Nodes B and C each use a wavelength to implement 1+1 channel protection.
Therefore, OTUp+ boards should be configured.
Based on the transmission distance, the optical module of the OTUp+ boards
should be selected to transfer the wavelengths.
7. GEM2 and SRM42 boards
Node D uses two channels of wavelengths for two types of multiplexing services:
GEM2 board is used for GbE service while SRM42 board is used for 622Mbit/s
service.
8. Shelves
The number of shelves to be installed in each node should be determined
according to the types and quantity of the services to be implemented.
Chapter 4 System Configurations and Networking Modes
4-9