Patent ID: 6697386
Filing Date: 2004-02-24
Classification: H04J,H04Q

Abstract:
A multiplex transmission apparatus for receiving a first multiplexed signal comprising a first payload having a plurality of main signals multiplexed therein and a first overhead bytes including a plurality of first maintenance information associated with administration and maintenance operations, performing termination processing for said first maintenance information and transmission processing for the main signals in said first payload, thereafter converting said first multiplexed signal into a second multiplexed signal comprising a second payload having multiplexed therein said main signals which have been processed for transmission, and a second overhead bytes including a plurality of second maintenance information associated with the administration and maintenance operations, said second maintenance information to be output to a far end communication apparatus, and transmitting said second multiplexed signal; comprising:an extraction circuit for extracting predetermined maintenance information from said first maintenance information; a cross-connecting circuit for cross-connecting information extracted by said extraction circuit; and insertion circuit means for inserting an output of said crossconnecting circuit into a predetermined location in said second overhead bytes, wherein said predetermined maintenance information in said first multiplexed signal is transferred to said second multiplexed signal.