Microsoft Teams SIP Trunk – Best SIP Integration for MS Teams

Microsoft Teams SIP Trunk

Upgrade Your Business Voice with the Top SIP Integration for MS Teams

  • Teams-Certified SBC Included

    Direct Routing includes our Microsoft-approved SBC solution, configured for you with our dedicated telephony team

  • Global SIP Calling You Can Count On

    Assign toll free, shared cost, and local numbers in MS Teams - including 100 regions not covered in Calling Plans

  • Expanded Caller ID

    Expand your caller ID options beyond the limits of Microsoft Calling Plans. Assign outbound caller ID in over 80 countries and growing

Integrated SIP Trunking in Microsoft Teams

Enabling VoIP calling in your Microsoft phone system requires a Calling Plan or a SIP trunk integration. In MS Teams, SIP trunking is known as Direct Routing. Microsoft Calling Plans provide "good enough" voice service in some regions, while Direct Routing unlocks exceptional phone number coverage and SIP call quality worldwide.

ms teams sip trunk configuration

Why Do Companies Prefer SIP Trunks in MS Teams?

Common reasons cited by companies choosing SIP trunking over Calling Plans include: 

  • Global Numbers: AVOXI provides over 100 international number types not offered in Calling Plans. 
  • Call Quality: AVOXI's network sets the benchmark for global call quality and SIP network security. 
  • Superior Support: AVOXI's 99.995% uptime is backed by 24/7/365 phone support and dedicated account management. 
  • Outbound Caller ID: Direct Routing unlocks outbound caller ID in twice as many countries as Calling Plans. 

Trusted by Over 7,000 Global Brands

Unlock Best-in-Class SIP Calling for MS Teams

PSTN Calling

Enhanced PSTN Calling for MS Teams

  • Enable inbound & outbound calling anywhere business is done, including 100 regions not available in Calling Plans
  • Manage virtual phone numbers from 170+ countries in Teams
  • Assign local numbers as outbound caller ID in 80+ countries and growing
  • Includes unlimited IVR menus, custom greetings, call recording, and more SIP calling features

Reliable Network

Reliable Global VoIP Network Backed by 24/7/365 Support

  • Our 4.2 global MOS score sets the standard for high-quality SIP calling in Teams
  • Direct Routing includes VIP onboarding, dedicated account management, and expert phone support 24/7/365
  • Transport Layer Security (TLS) and Secure Real-Time Transport Protocol (SRTP) encryption helps ensure the highest level of security for calls
  • Algorithms triggering real time alerts on traffic abnormalities and live monitoring of call traffic that terminates in highly fraudulent locations

World-Class Support

Enjoy Award-Winning Support that Calling Plans Can't Match

  • Direct Routing service includes 24/7/365 phone support
  • Let our dedicated team configure your PSTN connection for you, no in-house engineers needed
  • Bring your own session border controller (SBC) or take advantage of AVOXI's virtual SBC, included at no extra cost

Reviews from Our Customers

Don't just take our word for it. See why thousands of businesses rely on AVOXI as their SIP service provider.

As someone working for a Contact Center as a Service (CCaaS) company, Avoxi has been a good partner on every stage of the project, since the initial onboarding to their support and Account Managers team. Highly recommended if you need voice solutions worldwide.

Oscar Orozco
Carrier Operations Engineer

AVOXI has helped us to grow our business across the globe. As we expand into new countries, we just get a new number from AVOXI. They make it simple and cost effective. Service is amazing. We highly recommend using them.

Brad Taylor
Executive / Owner

Great DID services. Very broad coverage with instant activation for most countries we need. Sound quality is high grade and prices are fair to use.

Ami Shalmon

AVOXI has a comprehensive system that allows for all your call center needs. Easy to work with, support is great. Great rapport with the product managers and support team to fix opportunities and create new innovations.

Vito Vicario
Software Implementation Administrator

Additional Resources

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Best SIP Protocols for Secure Communications

Retain Phone Number

Number Porting

SMS Strategy Delivers Global Brand Experience
VoIP Quality

Troubleshooting Common SIP Issues

Frequently Asked Questions

Try the Top SIP Integrations for MS Teams

Talk to us today and see how easy SIP trunking in Teams can be.