Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2006-09-11
2008-12-16
Coles, Edward L (Department: 2625)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S352000
Reexamination Certificate
active
07466702
ABSTRACT:
A method and a device for switching the working mode of the media stream transition channel on a gateway. The method includes: detecting signals sent by data devices passing through the gateway, if the signals from common fax machines are detected, the media stream transition channel is switched to a T.38 mode; if the signals from high speed data devices are detected, the media stream transition channel is switched to a Voice-Band Data (VBD) mode, and at the same time, further signal detection is performed, if Call Menu-FAX (CM-FAX) signals are detected, the media stream transition channel is switched to the T.38 mode. The switching device of the invention includes a first detecting unit, a second detecting unit and a switching unit. The present invention can quickly, implement the working mode switching of the media stream transition channel on a gateway, which reduces the maintenance complexity of the devices.
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Coles Edward L
Huawei Technologies Co. Ltd.
Leydig , Voit & Mayer, Ltd.
Riley Marcus T
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