CPC H04W 80/10 (2013.01) [H04M 7/127 (2013.01); H04L 65/1033 (2013.01); H04L 65/1104 (2022.05); H04L 2101/385 (2022.05)] | 18 Claims |
1. At least one computer-readable storage medium, excluding transitory signals and carrying instructions, which, when executed by at least one data processor of a system, cause the system to:
determine a SIP INVITE header information,
wherein the SIP INVITE header information comprises a P-Access-Network-Info (PANI) header information,
wherein the PANI header information comprises a text string concatenation of a mobile country code (MCC), a mobile network code (MNC), a tracking area code (TAC), and a cell-identity value;
determine a geographic location information based on the PANI header information,
wherein the geographic location information comprises a major trading area (MTA) information;
determine a number prefix associated with the geographic location information; and
generate a SIP INVITE request uniform resource identifier (R-URI) based on the number prefix.
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