Differences between POS and CPOS interfaces

Differences between POS and CPOS interfaces:
A CPOS interface is a channelized POS interface with functions of timeslot multiplexing and demultiplexing. The CPOS interface can multiplex or demultiplex 2 Mbit/s signals from a 155M optical interface and can carry services with a minimum granularity of 2 Mbit/s. A POS interface is a service channel of a 155M optical interface with a minimum service granularity of 155 Mbit/s.

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