Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-06-28
2005-06-28
Hudspeth, David (Department: 2681)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S452100, C455S452200, C455S406000, C455S408000, C455S453000, C455S062000, C455S464000, C455S009000, C455S069000, C455S266000, C380S044000
Reexamination Certificate
active
06912393
ABSTRACT:
Transmission bandwidth consumption during the on-hold condition in telecommunications is reduced in a telecommunications system providing communication channels for the transmission of data between system stations. Two bandwidth states for each connecting channel are provided: an active state granting maximum bandwidth for the transmission of data and, for an on-hold condition, a minimal activity state for the connecting channel granting a minimal bandwidth. The active state prevails during the communication unless detecting means detect an on-hold condition in said connecting channel. Then, means responsive to a detection of on-hold condition switch to and provide a minimal activity state for said connecting channel granting a minimal bandwidth.
REFERENCES:
patent: 5828737 (1998-10-01), Sawyer
patent: 6047006 (2000-04-01), Brakefield et al.
Rodriguez Herman
Smith Newton James
Spinac Clifford Jay
Hudspeth David
International Business Machines - Corporation
Kraft Jerry B
LaBaw Jeffrey S
Nguyen David
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