| 摘要 |
In an authentication method for integrating ticket-granting service into session initiation protocol, a server provides session initiation protocol and ticket-granting services between a calling facility and a called facility, and the method includes enabling the calling facility to obtain a first ticket from the server, and subsequently issue an INVITE message containing the first ticket attached thereto to the server. If the server verifies that the first ticket be issued by the server itself, the server examines the registration status of the called facility in the server. If the status of the called facility is registered, identity authentication of the calling facility and called facility proceeds according to a predetermined ticket authentication procedure. If the authentication is successful, the called facility can establish a communication session with the calling facility.
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