Improve International VoIP Call Routing
Consider adding alternative routing paths or carrier agreements to improve connectivity with destinations that reject VoIP calls.
Customer requests enhanced routing or configuration options to ensure successful international call completion, where calls are being rejected with SIP 603 / Initiator Field: 2 responses.
Customer confirmed the same numbers work via other networks (e.g., T-Mobile).
The issue appears to be related to how destination carriers handle or block VoIP-originated calls.
Customer is an international logistics company that relies on global communication.
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Margarette
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