Cause why TOA provides 16 ClientLP ports but supports only 8 ODU0 services in ODU0 non-convergence mode

It is normal. The 32 ClientLP ports on the client side of a TOA board are mainly used when the TOA board is interconnected with a TOM board. If the first logical port of the TOM board uses channel 1, its second logical port can use only channel 2. When the TOA board is interconnected with the TOM board, the two boards must use the same channel. For example, if the TOM board uses channel 2, the TOA board must also use channel 2; otherwise, services will become abnormal. Therefore, two channels are designed for the TOA board in ODU0 non-convergence mode.

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