Patent ID: 8923275

Claim:
A method for providing service information, comprising: receiving a plurality of encrypted session initiation protocol (SIP) packets at a SIP edge proxy server; decrypting the SIP packets at the SIP edge proxy server; extracting service information from the SIP packets at the SIP edge proxy server, the service information describing a service provided to an access terminal associated with a subscriber; sending the extracted service information to an access gateway from the SIP edge proxy server via a service charging interface functionally between the SIP edge proxy server and the access gateway, the access gateway unable to decrypt the encrypted SIP packets, the service charging interface operable to communicate information between the access gateway and the SIP edge proxy server, the access gateway operable to charge the subscriber for the service; and receiving instructions at the SIP edge proxy server from the access gateway via the service charging interface functionality to execute SIP operations at the SIP edge proxy server in response to sending the extracted service information to the access gateway.