Inventors:
Jay Sethuram - Saratoga CA, US
Chandra Shekhar Joshi - Saratoga CA, US
Rajiv Kane - Fremont CA, US
Richard Joseph Weber - Mountain View CA, US
Srinivasa R. Malladi - San Jose CA, US
Assignee:
Cisco Technology, Inc. - San Jose CA
International Classification:
H04J 3/00
US Classification:
370476, 370370, 370374, 370378, 370381, 3703957, 370463, 370466, 370474, 370539
Abstract:
A method and apparatus for transceiving multiple service data from multiple communication services to a SONET/SDH communication system or network are provided. A SONET/SDH universal framer (SURF) bidirectionally provides communication between a SONET/SDH communication port and multiple service communication ports using their native data format. A SONET/SDH byte engine processes complex hierarchical SONET/SDH frames storing intermediate states when it changes to process a byte of data of a different STS-1 equivalent frame in a SONET/SDH STS-N frame. A service byte engine processes the multitude of service data formats and generally intermediate states are restored, processed, and saved when the service byte engine changes to process a different data stream or a different frame of data of a given service.