Patent ID: 6212167
Filing Date: 2001-04-03
Classification: H04J

Abstract:
An optical multiplexing transmitter located on a first ring transmission line of a high-ordered channel group, comprising:a multiplexing and demultiplexing section operatively connected to a transmission line of the high- ordered channel group for multiplexing optional time slots of a low-ordered channel group and demultiplexing optional time slots of the high-ordered channel group;a terminator operatively connected to an external transmitter of the low-ordered channel group, which is connected via a transmission line to an opposing transmitter located on a second ring transmission line of a high-ordered channel group; anda cross connect section for connecting optional time slots demultiplexed by the multiplexing and demultiplexing section, of the high-ordered channel group to optional time slots of the low-ordered channel via the terminator, and optional time slots of the low-ordered channel group to the multiplexing and demultiplexing section to multiplex to the high-ordered group channel, and setting to turn and connect an optional time slot of said low-ordered channel group back to an optional channel of the low-ordered channel group via the terminator in the form of a hair pin cross connection.