Method and system for providing prepaid roaming support at a visited network that otherwise does not provide it

A method of providing wireless services to a prepaid subscriber of a Home Public Mobile Network (HPMN) in a Visited Public Mobile Network (VPMN), the HPMN having Wireless Intelligent Network (WIN) phase 2 capability and an associated Home Location Register (HLR), the VPMN having non-WIN phase 2 capability and an associated Visited Mobile Switching Center/Visited Location Register (VMSC/VLR), the method comprising:

• detecting a registration attempt by the prepaid subscriber at the VPMN via a Signal Gateway (SG);
• sending a first modified registration message to imitate the VPMN's roaming support for WIN phase 2 capability at the HLR;
• sending, via the HLR, a registration acknowledgement message with trigger profile information to the SG in response to the first modified registration message;
• and
• sending a second modified registration acknowledgement message to the VMSC/VLR to facilitate the prepaid subscriber's mobile communication in the VPMN.

A computer program product comprising a computer usable medium including a computer usable program code stored thereon for providing wireless services to a prepaid subscriber of a Home Public Mobile Network (HPMN) in a Visited Public Mobile Network (VPMN), the HPMN having Wireless Intelligent Network (WIN) phase 2 capability and an associated Home Location Register (HLR), the VPMN having non-WIN phase 2 capability and an associated Visited Mobile Switching Center/Visited Location Register (VMSC/VLR), the computer program product comprising:

• first computer useable program code means for detecting a registration attempt by the prepaid subscriber at the VPMN via a SG;
• second computer useable program code means for sending a first modified registration message to imitate the VPMN's roaming support for WIN phase 2 capability at the HLR;
• third computer useable program code means for sending, via the HLR, a registration acknowledgement message with trigger profile information to the SG in response to the first modified registration message;
• and
• fourth computer useable program code means for sending a second modified registration acknowledgement message to the VMSC/VLR to facilitate the prepaid subscriber's mobile communication in the VPMN.