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Enhancing ANI Transmission in Roaming Scenarios for PSTN Calls | Recommendations for Seamless Connection

This paper addresses the issues with ANI transmission to PSTN, offering solutions for effective call completion. It discusses typical roaming scenarios and alternatives to send ANI in signaling, emphasizing short-term fixes and long-term recommendations.

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Enhancing ANI Transmission in Roaming Scenarios for PSTN Calls | Recommendations for Seamless Connection

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  1. Issues with ANI to PSTN IFAST-14 Lima, Perú October 4-5, 2000

  2. Typical roaming situation

  3. Alternatives to send in the callingnumber field of the signaling to the PSTN • MIN • TLDN • A fix number • The real number in its local, national or international format (E.164)

  4. Recommendations • A solution in the short term is to send a fix ANI to the PSTN to avoid any problem in the call completion to the PSTN. • In the long term the MDN field of IS-41 should be activated to send the ANI and to be able to use the services of redialing and identification.

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