Provider List

This is a list of VOIP providers that I've tried

ProviderProtocolAsterisk CompatibleCall InCall In: CostCall In: Areas
TescoIAX2YesYesFreeUK
AOLSemi Proprietary (SIP Based)NoYesFreeUSA
GizmoSIPYesYesUS$12/3  months, US$35/12 months28 countries, including UK & USA