Method for providing early-media service based on session initiation protocol
First Claim
1. A method of providing an early media by an application server during a session initiation protocol (SIP) based call connection between an originating terminal and a terminating terminal, the method comprising:
- receiving an invite message containing a first session description protocol (SDP) information from the originating terminal, and transmitting the invite message to the terminating terminal;
receiving a 180 ringing message containing a second SDP information from the terminating terminal that receives the invite message, prior to receiving a call response message from the terminating terminal;
providing the second SDP information to the originating terminal;
acquiring media information of contents for the early media from a media server, and transmitting a message containing the acquired media information to the originating terminal;
providing the early media to the originating terminal, using the media server; and
after receiving the call response message from the terminating terminal, stopping transmitting the early media to the originating terminal and establishing the call between the originating terminal and the terminating terminal.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates to a method of providing an early media service based on a session initiation protocol (SIP), wherein early media of a multimedia form can be provided under SIP-based B2BUA mode operation. According to the present invention, in a case where early media are provided to an originating terminal when a call connection with a terminating terminal is established at the request of the originating terminal, the early media is provided in the form of multimedia data, such as text, image, moving image, flash animation and the like, as well as audio data, and thus users desires are fulfilled and users satisfactions are maximized. In addition, with individual operation management of the terminating terminal and the originating terminal according to B2BUA mode operation based on the session initiation protocol and an early session initiation with the originating terminal, an early media service can be normally provided to the originating terminal even when the terminating terminal is in an abnormal operation state.
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Citations
19 Claims
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1. A method of providing an early media by an application server during a session initiation protocol (SIP) based call connection between an originating terminal and a terminating terminal, the method comprising:
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receiving an invite message containing a first session description protocol (SDP) information from the originating terminal, and transmitting the invite message to the terminating terminal; receiving a 180 ringing message containing a second SDP information from the terminating terminal that receives the invite message, prior to receiving a call response message from the terminating terminal; providing the second SDP information to the originating terminal; acquiring media information of contents for the early media from a media server, and transmitting a message containing the acquired media information to the originating terminal; providing the early media to the originating terminal, using the media server; and after receiving the call response message from the terminating terminal, stopping transmitting the early media to the originating terminal and establishing the call between the originating terminal and the terminating terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An application server for providing an early media during a session initiation protocol (SIP) based a call connection between an originating terminal and a terminating terminal, the application server capable of performing:
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receiving an invite message containing a first session description protocol (SDP) information from the originating terminal, and transmitting the invite message to the terminating terminal; receiving a 180 ringing message containing a second SDP information from the terminating terminal that receives the invite message, prior to receiving a call response message from the terminating terminal; proving the second SDP information to the originating terminal; acquiring media information of contents for the early media from a media server, and transmitting a message containing the acquired media information to the originating terminal; instructing the media server to provide the early media to the originating terminal; and after receiving the call response message from the terminating terminal, stopping transmitting the early media to the originating terminal and establishing the call between the originating terminal and the terminating terminal. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of providing an early media during a session initiation protocol (SIP) based call connection between an originating terminal and a terminating terminal, the method comprising:
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receiving an invite message containing a first session description protocol (SDP) information from the originating terminal, and transmitting the invite message to the terminating terminal; receiving a 180 ringing message containing a second SDP information from the terminating terminal that receives the invite message, prior to receiving a call response message from the terminating terminal; providing the second SDP information to the originating terminal, wherein the providing the second SDP information is performed during the establishing the call between the originating terminal and the terminating terminal; acquiring media information of contents for the early media, and transmitting a message containing the acquired media information to the originating terminal; providing the early media to the originating terminal; and after receiving the call response message from the terminating terminal, stopping transmitting the early media to the originating terminal and establishing the call between the originating terminal and the terminating terminal. - View Dependent Claims (16, 17, 18, 19)
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Specification