Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2006-03-14
2006-03-14
Yao, Kwang Bin (Department: 2667)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S474000, C370S537000
Reexamination Certificate
active
07012922
ABSTRACT:
A digital subscriber line (DSL) arrangement provides data and voice over IP (VoIP) services over a subscriber loop. Instead of conventional multiplexing at the IP layer, two separate IP packet streams are provided, one stream carrying delay insensitive data traffic and the other transporting delay sensitive traffic, in particular, packetised voice. The system segments each IP stream (i.e. those carrying voice and data) separately to produce two ATM streams which are then multiplexed using an ATM multiplexer. This reduces the delays to voice traffic resulting from queuing behind long data packets.
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Grant Michael F
Unitt Brian M
Barnes & Thornburg LLP
Nortel Networks Limited
Yao Kwang Bin
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