Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Patent
1997-03-26
1999-07-20
Pham, Chi H.
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
370352, H04L 1256
Patent
active
059264772
ABSTRACT:
When a signal is transmitted from an STM line to an ATM relay channel, the signal is compressed to be cell assembled into a cell. To the contrary, a signal from the ATM relay channel is cell disassembled into separate data and then expanded. In cases where signals are exchanged between ATM relay channels, a multistage relay device does not repeatedly execute signal compression/expansion to the signal. Switching for the above operations is achieved, utilizing a signal pattern inserted into audio data. With this arrangement, an audio one-link operation is established in the environment where an STM and an ATM coexist. Because compression/expansion processes are not repeatedly conducted, delay in relaying is avoided.
REFERENCES:
patent: 5297147 (1994-03-01), Shimokasa
patent: 5483527 (1996-01-01), Doshi et al.
patent: 5623491 (1997-04-01), Skoog
patent: 5684792 (1997-11-01), Ishihara
Fushimi Wataru
Ito Shuji
Shirokura Yoshihiko
Mitsubishi Denki & Kabushiki Kaisha
Nguyen Kim T.
Pham Chi H.
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