| 摘要 |
<p>Number Porting method, comprising the steps of triggering the porting by an INVITE message from a media gateway controller MGC, finding out the terminating routing number and operator in a data base, receiving the 'trunk group code' from the gateway controller, checking whether the call is allowed from originating operator, if the terminating routing number is found and if the call is allowed, then generating a SIP 301 response message containing the values of routing number and national significant number, if the call is not allowed, then generating a 403 response.</p> |
