Variable communication bandwidth for providing automatic call ba

Details Variable communication bandwidth for providing automatic call ba Variable communication bandwidth for providing automatic call ba

1995-05-26

1997-12-23

Chin, Wellington

Multiplex communications

Special services

Special feature of multiplex telephone terminal

370468, 370522, 379162, 379209, H04J 312

Patent

active

057012954

ABSTRACT:
Automatically reducing communication bandwidth to coincide with the state of a communication call by a communication terminal. If a first telecommunication terminal puts a second telecommunication terminal on hold, the first telecommunication terminal transmits a transport message that reduces the bandwidth of the call to a low speed data link. When the first telecommunication terminal wishes to again be in communication with the second telecommunication terminal, a transport message is utilized to restore the communication bandwidth. If a first communication terminal calls a second communication terminal and the second communication terminal is busy, the first communication terminal reduces the bandwidth of the communication call to that of a low speed data link. When the second telecommunication terminal becomes idle, the second terminal sends a message to the first terminal indicating the idle state. The first telecommunication terminal then uses a transport message to increase the communication bandwidth to the desired amount and engages the second communication terminal in a communication call.

REFERENCES:
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patent: 5115429 (1992-05-01), Hluchyj et al.
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patent: 5195086 (1993-03-01), Baumgartner et al.
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patent: 5313454 (1994-05-01), Bustini
patent: 5371534 (1994-12-01), Dagdeviren et al.
patent: 5477542 (1995-12-01), Takahara et al.
patent: 5495285 (1996-02-01), Fujioka
International Telecommunication Union (ITU-T, Telecommunication Standardization Sector of ITU, H.320, (Mar. 1993), Recommendation H.320, pp. 1-12.

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