Best SIP Trunk Providers

Compare the Top SIP Trunk Providers as of June 2025

What are SIP Trunk Providers?

SIP trunk providers are communication service providers that utilize the Session Initiation Protocol (SIP) to provide voice and multimedia sessions over the Internet. They can be used to interconnect an organization’s VoIP infrastructure with the public switched telephone network, allowing businesses to make use of their existing VoIP systems while also taking advantage of external telephony services. SIP trunking is seen as a cost-effective way of providing reliable voice and data services for businesses. Compare and read user reviews of the best SIP Trunk providers currently available using the table below. This list is updated regularly.

  • 1
    Sherweb

    Sherweb

    Sherweb

    A secure and reliable solution for your online business. Everything you need to get started. A user-friendly control panel to manage your website. Experienced support technicians. Access to a huge library of pre-configured web apps for your website. With Sherweb as your trusted cloud partner, you’ll be surprised by what you can achieve. Our full-fledged cloud management platform, driven by evolving business needs, empowers IT professionals to leverage agile solutions paired with 5-star service by trusted experts they can count on. We’re born in the cloud – IT folks rest easy knowing our ever-expanding portfolio of innovative products has been hand-picked and pre-vetted, including a selection of proprietary software you won’t find anywhere else. We bring you a mature, powerful platform that doesn’t make you choose between saving time and saving costs. Automate and integrate just about anything, leveraging our cutting-edge APIs. 
    Starting Price: $7.25 per month
  • 2
    Fusion Connect

    Fusion Connect

    Fusion Connect

    Connect your entire business with one call. Fusion Connect is your Managed Services Provider tailoring business internet solutions for your SD-WAN, business VoIP, unified communications (UCaaS), internet access, secure networking, and more. Fusion Connect's Business VoIP also features Internet-based faxing, SIP trunking, softphone, and auto attendant functions. Compatible with Windows and Mac, as well as device independent.
    Starting Price: $19.95/month/user
  • 3
    China Telecom

    China Telecom

    China Telecom Americas

    China Telecom (Americas) Corporation (CTA) provides customized, cost-effective and integrated network and communication solutions to its diverse base of customers. As a leading facility-resale private carrier with unique access to providers in Asia and the Americas, we offer a wide range of communication and data center services for multinational customers. CTA is headquartered in Herndon, Virginia, with offices in Chicago, Dallas, Los Angeles, San Jose, Sao Paulo and Toronto. Enterprises throughout the Americas trust CTA’s one-stop, turnkey solutions to meet the challenges of today’s complex business environment.
  • 4
    Zen

    Zen

    Zen Internet

    When you need it, combine broadband with line rental in one great value package. No scripts, just friendly experts here for you. Speedy access around the home with our fully featured dual band router. Use your broadband as much as you want, on all our standard connections. You'll keep the same monthly price on your monthly bundle when your 12, 18 or 24 month contract ends. Access your computer and files from anywhere in the world. We offer a full range of fast, superfast and ultrafast broadband packages, with a range of data usage packages, which include a static IP address. free market-leading FRITZ!Box router and our multi award-winning service and support as standard.
    Starting Price: $41.22 per month
  • 5
    Tata Communications

    Tata Communications

    Tata Communications

    Grow your business, boost productivity and maximize efficiencies all at the same time with our comprehensive portfolio of unified communications and collaboration (UCC) solutions that seamlessly integrate with your existing systems while transforming your user experience. Our unified communications solutions allow you to easily connect, communicate and collaborate with employees and customers worldwide over video, web or audio conferencing. Radically improve customer experience and end-user loyalty using omni-channel cloud contact centre solutions with Tata Communications’ unified communications services. Improve efficiency and lower telephony costs across your business by unifying conferencing and leveraging Global SIP Trunking for IP telephony and video calling.” Seamlessly improve collaboration and productivity across audio, web or video (Unified Communications), while at the same time boosting productivity across your customers’ infrastructures.
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