Compare the Top SIP Trunk Providers for Windows as of November 2025

What are SIP Trunk Providers for Windows?

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 for Windows currently available using the table below. This list is updated regularly.

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    XCastLabs

    XCastLabs

    XCastLabs

    The First and Still the Best in VoIP Communication! Our proprietary technology has been providing telecom services for over 20 years. XCast’s broad suite of products—Hosted IP-PBX, SIP Trunking, Carrier Services and Call Center Solutions—are available directly from XCastLabs or through our white label Resellers, our agent partners, carriers or call centers. XCast exceptional service, rates, and products meet the FCC standards for STIR/SHAKEN network compliance. XCast’s Hosted PBX solution is delivered over the Internet to any of your connected devices. Promotional plans start as low as $9.95 per month and include FREE Outbound minutes and a FREE Yealink Business Phone per extension. Sip Trunk Plans begin at $4.95 w/unlimited inbound minutes and free installation. Our Automatic Call Distribution (ACD) system has full reporting, automated customer callback, custom prompts, music on-hold, call recording, call monitoring (with whisper and barge-in), call transfer and more!
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    Starting Price: $4.95/month
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    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
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    2600Hz

    2600Hz

    2600Hz

    An unrivaled UCaaS solution designed to empower Service Provider success. Differentiate your brand and offering in the market with a completely customizable, white label solution. KAZOO is 2600Hz's turnkey UC platform, offering the flexibility you need to provide a superior communication experience. Give your customers a communication solution that will make them successful. 300+ APIs enable you to customize a solution to help your customers do business better. White label your solution to build and maintain your brand recognition in the market. Low upfront costs let you get started quicker and stay cost competitive. Reliability and geo-redundancy ensures your customers are always online. Mobile ready lets your customers get business done when and where they need to. KAZOO is a multi-tenant platform and gives you the ability to open your sales channels. Bring on resellers, go direct, or have an agent model.
    Starting Price: $3.50/month
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    Cebod Telecom

    Cebod Telecom

    Cebod Telecom

    Cebod Telecom is one of the market leaders for affordable business VoIP plans. If you want a quality VoIP system on a budget, Cebod Telecom is the provider for you. They offer a state-of-the-art Pay-Per-Line business telephone model. Revolutionary as businesses will pay per line as opposed to pay-per-user VoIP systems, this service offers businesses access to Cebod Telecom’s already well-regarded quality telephone systems. In addition, the company also offers all-inclusive 50 plus premium IP PBX and dial tone features including music on hold, call forwarding, voicemail, e-Fax, and SMS through their VoIP services. Cebod Telecom offers both metered and unmetered phone plans suited for every type and size of business. High call quality, unlimited user extensions, and unlimited calling within USA and Canada are some of the benefits offered for each phone plan. They also offer free android and IOS phone Apps to manage the phone system and to communicate.
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