Apparatus and method for providing session initiation protocol (SIP) service in private network
First Claim
1. An apparatus for providing a session initiation protocol (SIP) service, comprising:
- a gateway installed in a boundary between a private network and a public network, the gateway determining identifier information and address information of SIP terminals located in the private network using an SIP message transmitted between the private network and the public network; and
storage means for storing a mapping table which manages the identifier information and the address information.
1 Assignment
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Accused Products
Abstract
An apparatus for providing a session initiation protocol (SIP) service comprises: a gateway installed in a boundary between a private network and a public network, the gateway detecting identifier information and address information of SIP terminals located in the private network using an SIP message transmitted between the private network and the public network; and a storage device for storing a mapping table which manages the identifier information and the address information. A corresponding method comprises the steps of: receiving, by means of the gateway, an SIP message to be transmitted from an SIP terminal in the private network to the public network; determining, from the SIP message, identifier information and address information of the SIP terminal; registering the identifier information and address information of the SIP terminal in a mapping table; receiving, by means of the gateway, an SIP message inputted from the public network; determining, from the SIP message, identifier information of an SIP terminal to which the SIP message is to be transmitted; determining, from the mapping table, address information corresponding to the identifier information determined in the previous step; and transmitting the SIP message inputted from the public network using the determined address information.
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Citations
12 Claims
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1. An apparatus for providing a session initiation protocol (SIP) service, comprising:
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a gateway installed in a boundary between a private network and a public network, the gateway determining identifier information and address information of SIP terminals located in the private network using an SIP message transmitted between the private network and the public network; and
storage means for storing a mapping table which manages the identifier information and the address information. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of providing a session initiation protocol (SIP) service using an application layer gateway installed in a boundary between a private network and a public network, the method comprising the steps of:
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(a) receiving, by means of the gateway, an SIP message to be transmitted from an SIP terminal in the private network to the public network;
(b) determining, from the SIP message, identifier information and address information of the SIP terminal;
(c) registering, in a mapping table, the identifier information and the address information of the SIP terminal;
(d) receiving, by means of the gateway, an SIP message inputted from the public network;
(e) determining, from the SIP message, identifier information of an SIP terminal to which the SIP message is to be transmitted;
(f) determining, from the mapping table, address information corresponding to the identifier information of the SIP terminal determined in step (e); and
(g) transmitting the SIP message inputted from the public network using the address information determined in step (f). - View Dependent Claims (11, 12)
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Specification