Redundant Protocol Minimizing Retransmission Needs
Original Publication Date: 1986-Sep-01
Included in the Prior Art Database: 2005-Mar-09
In voice and data networks, the voice analog signals as well as signalling information provided by telephone lines are converted into digital form and then multiplexed (MPX) with data from Data Line Interfaces. The multiplexed data are packetized and transmitted over a high speed digital link. Bit errors occurring on data flowing over the digital network are conventionally corrected through no acknowledgements (NACK) and retries between digital nodes of the network. Thanks to the high speed over the digital network, the retry protocol is transparent to the end user. The retry operations may be implemented using different means. For instance, the traffic may be buffered within each network node for being retransmitted upon receiving a NACK or dropped after an ACK.