Digital communication system for simultaneous transmission of data from constant and variable rate sources

摘要: The present invention relates to a communication system, protocol and method designed facilitate information transfer including user control from CBR (Continuous Bit Rate) and/or non-CBR signal sources. Such for example, is CSS (Customer Switching System), LAN network, Key System, hub, PABX or PBX. A number of aspects are disclosed in this specification. These include: A) key system which utilizes ATM technology the trafficking CBR, non-CBR, combination thereof, B) round robin feature facilitates operation i. above, C) cell format D) an open closed architecture E) ATM-TP serves as interface ATM-HP architecture, F) partial filling efficiency echo control, G) staggering efficiency, H) channel aggregation reduce requirement external adaptor equipment, I) by-pass enhance reliability serviceability. An example voice, video "non-bursty" data. "bursty" data