Greenberry Networks is nationwide provider of scalable SIP Trunking Services. We are 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.

Our vision is to help clients implement modern communication solutions that are

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


The Lab

Greenberry Networks, LLC blends a passion for Internet enabled telephony with a 100% commitment to satisfy customers. To prove this, we offer a free public SIP lab here at SIP-UA.com to help users expand their knowledge of SIP and its capabilities with no strings attached.


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. Please visit Greenberry Networks and request a quote to experience these savings for your business.