SIP-UA.com is nationwide provider of scalable SIP Trunking Services. Founded in 2009, SIP-UA is becoming recognized as an alternative to regular, less flexible telephony providers. Our services are tailored for VoIP engineers and pbx vendors ready to make the move from traditional TDM circuits to VoIP. We encourage our customers to use the sip user agent or sip-enabled pbx of their choice. We also offer free sip trunks for labs and product research

The SIP-UA vision is to help clients implement modern communication solutions that are

  • Easy To Use
  • Flexible And Scalable
  • Reliable and Stable
  • Demonstrate clear savings



SIP-UA.com blends a passion for Internet enabled telephony with a 100% commitment to satisfy customers. We are so confident that you will like our services that we offer a 30-day money back guarantee. Because our service is scalable, you only pay for what you need and the cost savings are significant.


About VoIP

VoIP has forever changed the way telephony is done. Using your high speed internet connection and a touch-tone phone you can use VOIP to make significantly cheaper calls than through regular telephony. VOIP works for business phones, home phones and mobile phones with Internet service.


SIP Trunking

A SIP trunk permits businesses that have a PBX to use VoIP using an Internet connection. Studies show a typical cost reduction of 40%-70% over traditional telephone services.