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One Source Networks

One Source Networks (OSN) SIP Trunking service goes beyond voice transport, integrating diverse communication capabilities, such as video, voice and IM, over a single connection. The service is interoperable with Mitel’s voice platform and is highly scalable and reliable, backed by redundancy at the trunk or telephone-number level. With OSN’s SIP Trunking, you can easily grow your reach with local DIDs (available in 3,700+ non-U.S. cities, 65+ countries and over 90 percent of U.S. markets). OSN offers toll-free services in 120+ countries (including all U.S. markets), UIFN in 70+ countries and termination services in more than 200 countries and territories worldwide. Additionally, we provide emergency services in 12 countries internationally.


  • Interoperable with Mitel voice platform, and easy integration with legacy infrastructure
  • Integration of Unified Communications services onto a single connection
  • Primary, secondary and tertiary disaster-recovery initiatives, available at the trunk or telephone-number level
  • A global SIP-based voice network with redundant points of presence across five continents and Sonus Session Border Controllers to support seamless delivery of high-bandwidth services
  • Global in-country voice testing


  • Expands  global presence by offering the largest telephony footprint of any single-service provider
  • Provides cost management through service convergence, and local and long-distance usage included in the monthly service charge
  • Improves collaboration with support of diverse communication capabilities
  • Enables enterprises to meet business continuity objectives with flexible disaster recovery options by trunk or telephone number
  • Provides deep visibility and control into traffic via an optional, easy-to-use portal that can be used to route traffic anywhere in the world in the event of a number outage

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