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Keep your workforce, partners and customers connected with voice services delivered on our reliable global network and SIP platform.

Simple & scalable calling for global enterprises

Contact us to discuss your next-gen SIP voice needs.

Next-Generation SIP Voice Services from Lumen  

Lumen SIP solutions enable you to supply optimized customer experiences with connections that improve productivity and provide a reliable, feature-rich and cost-effective solution.

Woman in brightly lit office on the phone

Simple & scalable calling for global enterprises

SIP Long-Distance Services

This solution enables you to place interstate, intrastate or international outbound calls over a dedicated or switched connection.

Woman with a headset on

Enterprise SIP Toll-Free Services

Keep costs down and deliver maximum value with Lumen Enterprise Toll-Free service, which includes powerful features to help boost efficiency.

SIP International Local Inbound

High-performance connections provide origination for U.S. national and international telephone numbers through a single IP point of interconnection.

Illustration of a laptop screen with a globe icon on it and three lines connecting a phone, headset & building icon

Features and Specs

  • Competitive rates
  • Outbound service to 30+ countries in North America, South America, Europe and Asia
  • Termination to more than 190+ countries
  • Streamlined billing and administration under a single vendor

  • Dedicated and switched solutions
  • Low, flat service rates for interstate, intrastate and international calls
  • Proven, reliable network

  • Local coverage in U.S., Latin America, Europe and Asia
  • Consolidate multiple origination points
  • Options to scale up or migrate as needed