SIP Trunking

Services ⇢

Modernize your voice communications with SIP Trunking from intlx Solutions.

As legacy POTS and Centrex lines become obsolete, businesses are turning to SIP Trunking as a more flexible, reliable, and cost-effective alternative. At intlx Solutions, we specialize in delivering SIP Trunking services that streamline your telecom infrastructure, lower monthly costs, and improve uptime — backed by FCC-compliant technology and expert support.

Whether you’re looking to eliminate legacy lines, support remote teams, or integrate with Microsoft Teams, our SIP Trunking solutions are built to scale with your business.

Key benefits of SIP Trunking with intlx Solutions:

✔ Leverage your existing internet connection for voice traffic 

✔ Secure your calls with encrypted SIP protocols

✔ Maintain compatibility with legacy PBX systems 

✔ Fully integrated with Microsoft Teams

✔ Fax over IP (FoIP) support

✔ Designed for high reliability and scalability

✔ FCC-compliant solutions

Core Capabilities

  • Extensive Coverage

    In addition to covering a vast majority of the US and Canada, intlx offers origination, termination, and SMS/MMS services in 60+ countries.

  • Kari's Law/Ray Baum's Act

    Dynamic location routing for 911 allows you to send the location of the caller at the time of the call, and 911 alerts allow you to notify people in the event that 911 is called from a certain phone number.

  • Reliability

    Redundant SIP networking allows a seamless fail-over in the event of a network outage, ensuring your customers' services are not affected.

  • SMS/MMS

    Competitive rates for SMS/MMS allow sending messages via API, SIP, or even email. Our user-friendly interface allows managing SMS/MMS campaigns for compliance with The Campaign Registry.

  • STIR/SHAKEN

    FCC regulations state that calls need to be marked as legitimate and verified before reaching customers. Our SIP trunks adhere to FCC regulations for you!

  • Unique Value

    Hosted billing, fraud mitigation, fraud detection, robocall mitigation, and dynamic 911 location routing can give you an edge over your competitors and simplify management of the service.

SIP Trunking FAQs

  • Yes, we can work with your older phone system. We are able to deliver our SIP trunking services with a T1 handoff to interface with your phone system.

  • Yes, our team will be your main point of contact for any issues you have with your SIP service. Our team of US-based certified SIP engineers is ready to assist you with any and all questions you may have related to your SIP trunking.

  • Our data centers are currently located in Atlanta, GA and Las Vegas, NV. 

  • We do support T.38 faxing for any number you have on our SIP trunking service. These fax numbers can also be set to send faxes to an email address at no additional cost. This is not a fax server replacement, but for most companies we find this feature to be more than sufficient.

  • Great question! The answer is yes, we do! Our E911 service is fully compliant with Kari’s Law and the Ray Baum Act. We can show you via our portal, or our team can set up email alerts so any emergency call is sent to an email address(es) of your choice. 

  • We currently offer SIP trunking in multiple contract lengths. Whether you need a 1-year, 1-and-a-half years, or beyond, we are flexible and can size your contract based on your needs.

  • Yes, our team can set up and configure your SIP trunks to work with multiple different vendor PBXs. Contact us and one of our solution architects will reach out to answer any questions about how our SIP trunk solution will work in your environment. 

Customers Currently Using Our SIP Trunks