Within the past weeks, many VoIP service providers were taken by surprise by changes in the market for U.S. termination, as large VoIP wholesalers began to implemented LRN billing and intra-state billing for U.S. termination traffic. In many cases, the changes were made with little or no notice to wholesale customers.
These wholesale carriers are now charging for calls based on the LRN (Local Routing Number) instead of using the actual dialed digits (also known as DNIS or Dialed Number Identification Service).
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