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, is characterized that comprising the steps of:
- (a) calling a MCU by a first video communication terminal, and sending a conference information needed for convening a conference to the MCU through an In-Band channel established between the first video communication terminal and the MCU;
(b) 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.
24 Citations
22 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, is characterized that comprising the steps of:
-
(a) calling a MCU by a first video communication terminal, and sending a conference information needed for convening a conference to the MCU through an In-Band channel established between the first video communication terminal and the MCU;
(b) 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)
-
-
17. 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 IP network, is characterized that comprising the steps of:
-
(a′
) establishing a channel with an IP network gate keeper (GK) by a first video communication terminal and sending to the GK needed conference information for convening a conference;
(i′
) retransmitting the conference information to a service management center by the GK;
dispatching resources of related MCUs by the service management center;
sending the conference information to the related MCUs and instructing the MCUs to convene the conference by the service management center;
(b′
) convening the conference by the MCUs, according to the conference information received.
-
-
18. The method according to claim l7, further comprising the steps of:
-
(f) after authentication, sending a control connection request to a MCU by a video communication terminal of the conference through the In-Band channel between the video communication terminal and the MCU;
receiving or rejecting the control connection request by the MCU;
(g) if in step (f), the control connection request is received, sending one or more than one conference control requests to the MCU through the In-Band channel by the video communication terminal;
(h) making response of conference control requests from the video communication terminal by the MCU.
-
-
19. A message data form for transferring information through an In-Band channel in 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 field.
- View Dependent Claims (20, 21, 22)
Specification