| 摘要 |
A method and system for re-establishing a connection from a PSAP or 911 call center to a terminal of a 911 caller who has subscribed to IN services, for example, after a terminal of a 911 caller has been disconnected from the PSAP or 911 call center. If the call is dropped, the PSAP or 911 call center can, manually, or automatically via the system of the present invention, dial or cause to be dialed, a pre-determined prefix prior to dialing the number of the terminal of the 911 caller. In a separate embodiment of the method and system of the present invention, a separate parameter is used in CAMEL IDP and ISUP IAM to indicate the calling party category to identify that the call is originating from a PSAP or 911 call center.
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