Internet telephone apparatus and method for an internet...

Details Internet telephone apparatus and method for an internet... Internet telephone apparatus and method for an internet...

2005-09-06

2005-09-06

Chin, Wellington (Department: 2664)

Multiplex communications

Data flow congestion prevention or control

Flow control of data transmission through a network

C370S235000, C370S230000, C370S231000

Reexamination Certificate

active

06940819

ABSTRACT:
A voice signal from a microphone is processed for compressing and coding in a voice compressor. The compressed voice data is input into a transmission switching section. The transmission switching section switches and outputs the compressed voice data to either a UDP transmitter or a TCP transmitter according to a transmission switching signal that the network situation supervisory section outputs. The transmission switching signal allows-transmission using the UDP transmitter when a network is in a situation with a margin, and transmission using the TCP transmitter when a network is in a confused situation responding to network congestion information that is obtained from a network interface. This allows a protocol transmitting the compressed voice data to be selected corresponding to a congested situation of the network, and thereby a voice call without interruption can be obtained even though the network is in a confused and low-quality situation.

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