Netrio SIP Trunking provides wholesale carrier and large business customers with inbound Toll-Free origination services with fully redundant carrier coverage (multi-CIC)

  • 100% coverage of U.S. 50 , Canada and Caribbean
  • International Toll Free Service (ITFS)
  • Free 3rd Party RESPORG support
  • Custom LCR to for multi-CIC management
  • Virtual DID’s
  • Redundant CIC codes (AT&T, Level 3 and Verizon)
  • Toll-Free Portability
  • T.38 Fax Support


  • Unlimited Call Paths – never block incoming calls
  • Call Center Toll Free blocks for market identification and tracking
  • Managed QoS – Private Peering & Public Peering


  • Dallas based NOC with continuous surveillance & support 365 x 7 x 24
  • Redundant class 4 carrier switch interconnected via SS7 & SIP
  • Direct TDM & SS7 connectivity with AT&T / Verizon

NETRIO is a premier VoIP Service Provider. Specializing in delivering quality Voice over IP services to Business, Call Centers & Carriers using SIP Trunking and traditional PRI / SS7 circuits.