We are the lowest and the best Dialer friendly SIP trunk provider.
"King of Dialers"
8 Telecom Association Awards
> Switching infrastructure built from the ground up to support high volume dialer traffic.
> No short duration charges.
> High CPS assignment.
> Largest dialer termination vendor in the United States!
> Complete U.S. Domestic and select international dialer termination.
NumberGroup provides business quality VoIP services to wholesale operators and SIP Trunk customers worldwide. We have over 1,000,000 UK and Internaiton telephone numbers are are a license UK operator with direct PSTN connectivity.
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