Patent ID: 8913594

Claim:
A Mobile Switching Center (MSC) of a Code Division Multiple Access (CDMA) telecommunications wireless network including a CDMA mobile station (MS), a CDMA base station (BS), a CDMA Home Location Register (HLR) and an Unstructured Supplementary Service Data (USSD) Gateway, the MSC comprising: a network interface unit configured to receive a USSD message in a first form; and a processing unit configured to: process the USSD message in the first form, examine a subscriber profile, determine, based on the subscriber profile, whether the USSD message in the first form is allowed to be processed for routing to the USSD Gateway and route the USSD message in a second form to the CDMA telecommunication wireless network when the USSD message is allowed to be processed for routing to the USSD Gateway, the USSD message of the first form being an Interoperability Specification (IOS) ADDS Deliver message having an ADDS User Part informational element having an Application Data Message field containing a USSD message and having a Data Burst Type field set to a value of USSD.