Patent ID: 6873858

Claim:
In a radio communication system having a mobile station operable to communicate by way of a first network pursuant to a fist-network communication service subscription, the first network operable pursuant to a first communication-standard protocol and the first network coupled to a second network, the second network operable pursuant to a second communication standard protocol, an improvement of apparatus for facilitating invocation of a second-network service, resident at a second-network service control point, by the mobile station, said apparatus comprising: a bridge mechanism coupled to receive a first-network-generated request for invocation of the second-network service by the mobile station, said bridge mechanism at least for selectably initiating authorization of the mobile station to involve the second-network service, the bridge mechanism comprising: a first communication-standard protocol message detector, said first communication-standard protocol message detector for detecting the first communication-standard protocol message that requests the invocation of the second-network service; a second communication-standard, protocol-request message generator for generating a second communication standard protocol-request message for communication to the second-network service control point to request invocation of the second-network service by the mobile station; a second communication-standard, protocol-response message detector for detecting a second communication-standard protocol-response message generated by the second-network service control point and returned to said bridge mechanism; and a first communication standard, protocol-response message generator coupled to receive indications of detection by said second communication-standard, protocol-response message detector of the second communication-standard protocol-response message, said first communication-standard protocol-response message generator for generating a first communication standard-protocol response message indicative of a value of the second communication-standard protocol response message.