SIP Trunking for your in-house phone system

image08Traditional phone networks use copper wires to communicate with your in-house PBX. With SIP trunking, there is no need for traditional copper lines from the incumbent telco. SIP trunking uses Voice over Internet Protocol (VoIP) to create a virtual phone line or “trunk” to send voice traffic to your phone system. This allows you to reduce telecom expenses and gives you a much more flexible and expandable means of communicating. SIP simply means Session Initiated Protocol which is more internet jargon.

Features and Benefits

GlobalPhone supports native SIP trunking with SIP capable equipment like Asterisk, Trixbox and Fonality. In addition, connectivity to older legacy PBX systems is provided through standard VoIP Gateway Devices. Click to see Supported PBX Systems and Supported Gateways.


  • Inbound and Outbound Call Routing
  • All US area code DID availability
  • Bundled free minutes for US/Canada and toll free calls
  • Caller ID, 911 and 411 Support
  • Automatic failover to backup numbers in case of network disruption
  • Fully Redundant Application Servers
  • Supports SIP G.711 and G.729 codecs
  • Hosted Voicemail available
  • Inbound Hunt Groups


  • Dramatic savings on local, long distance, and international calls
  • Free calling between on-net offices and virtual workers no matter where they are located
  • Unlimited incremental or scalable growth
  • Cost-effective migration path to a Hosted VoIP solution
  • Combined voice and data circuits eliminate the need to keep expensive voice circuits
  • Simpler wiring requirements
  • Portable to new locations