Kt Corporation

Sang-Man Bak

Ho-Jin Lee

Jang-Won Lee

Kyung-Hoon Kim

Sung-Ho Hwang

Jang-won Lee

Myoung-Gyu Son

Disclosed are the examples of an interworking system and related methods. The interworking system can be configured to implement a session initiation protocol (SIP) message routing method that may include checking a transmitting subject and a transmission method of a SIP message, applying a network address translation based on the checked message's transmitting subject and its transmission method, and specifying the address of the node selected based on the checked message's transmitting subject in routing path information.

Session initiation protocol message routing method between IP networks using different IP address format

A method for converting a SMS sent through a mobile communication network into a SMS or MMS in a previously registered format includes the steps of: receiving a SMS from a certain sending subscriber, determining whether the corresponding sending subscriber is subscribed to a SMS converting service, then converting the SMS into a previously registered format in case the sending subscriber is subscribed to the SMS converting service, and then sending the converted message to a designated receiving terminal.

System and method for decorating short message from origination point

Disclosed are examples of an interworking system and related methods. The interworking system can be configured to implement a session initiation protocol (SIP) message routing method that may include checking a transmitting subject and a transmission method of a SIP message, applying a network address translation based on the checked message's transmitting subject and its transmission method, and specifying the address of the node selected based on the checked message's transmitting subject in routing path information.

Disclosed are examples of an interworking system. In some embodiments, the interworking system includes a STUN server and an application layer gateway (ALG) server. The STUN server can be configured to provide binding information. The application layer gateway (ALG) server can include an IP masquerading performer, a STUN client performer, an address translator and a determiner.

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Gyeonggi-do, South Korea

Sang-Man Bak