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Sudden shift to LRN billing shakes up Wholesale VoIP Market


Over the last few months several wholesale VoIP carriers have switched from billing based on DNIS digits (Dialed Number Identification Service) to LRN based billing (Local Routing Number). LRN based billing uses local number portability data and that is causing some serious issues for SIP VoIP providers.

According SIP termination provider, the main issue encountered is that many SIP providers do not have a billing system that is capable of LRN-based billing. Billing is very demanding on a day to day basis and most SIP providers do not want the added burden of either transforming or upgrading a billing system from DNIS-based billing to LRN-based billing.

“The second issue is the underlying cost for services on routes that bill based on LRN vs routes that bill based on DNIS digits. LRN-based billing will typically increase a SIP provider’s per minute cost between 15 to 25%. If a SIP provider can’t bill their end user accordingly profit margins will become squeezed.For that reason we have greatly increased the number of ports on our wholesale SIP route that bills on DNIS”, claims Mr. Breeze, VP of Wholesale Services at



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