Line concentrator for telephone set and communication method...

Details Line concentrator for telephone set and communication method... Line concentrator for telephone set and communication method...

2008-06-03

2008-06-03

Pham, Chi (Department: 2616)

Multiplex communications

Pathfinding or routing

Combined circuit switching and packet switching

C370S395320, C370S401000, C370S465000

Reexamination Certificate

active

07382766

ABSTRACT:
Speech telephones are incorporated in a LAN, and, for example, when a voice telephone5communicates with another voice telephone8, call control is performed through exchange of information between a PC1and a. PC4, juxtaposed with the voice telephones, respectively, via a LAN hub10, a LAN switching unit50, and a LAN hub20. Speech data of the respective telephones5, and8are packetized in the data block of a MAC frame by concentrators30, and40for voice telephones, respectively, and relayed to LAN-SW interfaces30a, and40a. Frames having a function of absorbing fluctuation are applied to the data block of the interfaces30aand40a. Respective voice data packetized according to the MAC address of the MAC frame are delivered to the voice telephones5, and8, respectively, via the LAN switching unit50, and the concentrators30, and40for voice telephones.

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