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grnVoIP maintains relationships with over 50 carriers, including the top wholesale VoIP providers in the world. We make VoIP easy by finding the best H.323 and SIP termination each carrier has to offer, and combining it with extreme customer service and no-headache, pay-as-you-go commercial terms.




grnVoIP's wholesale SIP termination service for ITSPs lets you spend less time managing routes.




grnVoIP's SIP termination service for Enterprises is designed to simplify your job as a PBX administrator.



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grnVoIP: Retail quality VoIP termination at wholesale rates.

What makes grnVoIP the best VoIP termination? The best VoIP providers: AT&T, BT, Commwave, Deutsch Telecom, France Telecom, Global Crossing, iBasis, IDT, KPN, Level 3, PacWest, Qwest, Telecom Italia, Tata, Teleglobe, VNSL, Verizon, XO. The best SIP compatibility: Asterisk, AudioCodes, Avaya, Brekeke, Cisco, Counterpath, D-Link, Dialexia, Epygi, Grandstream, Jive, Linksys, Mediatrix, Microsoft Response Point, Pingtel, Quintum, SIPX, SIPXECS Solegy, Sphere, Trixbox, Vegastream, Verso. The best open source VoIP software: Asterisk, OpenSBC, Kamailio, Freeswitch, JAIN, Vocal, Ekiga, SIPP, OpenSIPStack, OpenSIPS, Net-SIP, sipd, SIPX