Gartner Research

How to Use SIP Trunks to Attain High-Availability Voice

Published: 08 December 2016

ID: G00318737

Analyst(s): Rafael Benitez


Network architects are migrating legacy PSTN access to SIP trunking to lower telecom expenses and consolidate their unified communications infrastructures. Once in place, SIP trunks can be used to provide cost-effective, ultrahigh availability for critical voice services by using multiple carriers.

Table Of Contents
  • Key Challenges



  • Adopt a Multicarrier Strategy
  • Move to Redundant SIP Trunk PSTN Access
  • Use Active/Active SIP Trunking Design for the Best Resiliency, Cost and Support Model
  • Use a "RespOrg" to Protect Inbound U.S. Toll Free Calls

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