Television – Two-way video and voice communication – Conferencing
Reexamination Certificate
2003-02-26
2010-10-05
Ramakrishnaiah, Melur (Department: 2614)
Television
Two-way video and voice communication
Conferencing
C348S014080, C348S014120, C370S260000, C370S261000
Reexamination Certificate
active
07808522
ABSTRACT:
The invention discloses a method for calling video communication service by video communication terminal. The method comprises the steps of: (a) a first video communication terminal launches a call to a multipoint control unit (MCU) and sends an conference information needed for convening a conference to the MCU through an In-Band channel established between both sides; (b) the MCU convenes the conference according to the conference information received. The invention also discloses a message data form for transferring information through an In-Band channel in a video communication service. The message data form comprises: a data starting mark field, a data type field, a data length field, a field for no less than one piece of sub-information, a data ending mark field and a cyclic redundancy check field.
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Fang Liu
Li Jun
Lin Yanqing
Zhang Liquan
Zhang Yufeng
Huawei Technologies Co. Ltd.
Ramakrishnaiah Melur
LandOfFree
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