Functions of the TOM board

1

The TOM board is an 8-channel Any service processing board. It supports various applications:
1. Functions as a tributary board to perform mutual conversion between ODU0/ODU1 signals and signals at arbitrary rates in the range of 100 Mbit/s to 2.67 Gbit/s.
2. Functions as an OTU board to perform mutual conversion between OTU1 signals and signals at arbitrary rates in the range of 100 Mbit/s to 2.67 Gbit/s.
3. Converges multiple channels of services into one channel of ODU0/ODU1 services.

Other related questions:
Whether services on the TOM board and TOA board can be interconnected
Yes, they can be interconnected on the OSN 8800 when the two boards have the same service type and mapping mode settings.

Numbering of the optical ports on the TOM board on the NMS
For all tributary boards, the logical ports are numbered starting from 3. In other words, the optical port numbers displayed on the NMS start from 3. Numbers 1 and 2 are reserved for WDM-side ports.

Whether two NS2 boards are required for the ring protection of the TOM board
When ring protection is configured for services on the TOM board, if ODUk SNCP protection is configured, two NS2 boards are required to achieve dual feeding and selective receiving for routes in different directions.

Whether TOM boards can transmit 2.5G services
TOM boards can transmit 2.5G services but one TOM board can transmit a maximum of four channels of 2.5G services.

Indication when the SRV indicator on the TOM board is red
The SRV indicator is a service alarm indicator. The indicator status is described as follows: On (green): The service is normal. On (red): A critical or major service alarm is present. On (yellow): A minor or remote service alarm is present. Off: No service is configured.

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