Method for calling video communication service by video communication terminal and associated message data form
First Claim
1. A method for calling video communication service by video communication terminal, wherein at least one multipoint control unit (MCU) connects with video communication terminals through a communication network, the method comprising:
- (a) calling a MCU by a first video communication terminal;
(b) establishing an In-Band channel between the first video communication terminal and the MCU;
(c) sending conference information needed for convening a conference from the first video communication terminal to the MCU through the In-Band channel, wherein the conference information, which comprises sub-information for a conference, sub-information for conference sites, and common sub-information for a conference and conference sites, is defined in the first video communication terminal and transferred by a specific message data form; and
(d) convening the conference by the MCU according to the conference information received.
1 Assignment
0 Petitions
Accused Products
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.
12 Citations
19 Claims
-
1. A method for calling video communication service by video communication terminal, wherein at least one multipoint control unit (MCU) connects with video communication terminals through a communication network, the method comprising:
-
(a) calling a MCU by a first video communication terminal; (b) establishing an In-Band channel between the first video communication terminal and the MCU; (c) sending conference information needed for convening a conference from the first video communication terminal to the MCU through the In-Band channel, wherein the conference information, which comprises sub-information for a conference, sub-information for conference sites, and common sub-information for a conference and conference sites, is defined in the first video communication terminal and transferred by a specific message data form; and (d) convening the conference by the MCU according to the conference information received. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A message data form for a video communication service, is characterized that comprising 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 for recording conference information defined by a first video communication terminal, wherein
the conference information comprises sub-information for a conference, sub-information for conference sites, and common sub-information for a conference and conference sites; - and
the conference information in the message data form are adapted to be transferred to an MCU through an In-Band channel established between the first video communication terminal and the MCU for the video communication service and to be used to convene the conference by the MCU. - View Dependent Claims (17, 18, 19)
- and
Specification