Upgrade your legacy PBX with cloud-based SIP Trunking

No new equipment or service disruptions.

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SIP Pricing


Nextiva’s SIP metered plan
Starts at


/mo per user
Make as many calls as you want for less than a penny per minute in the United States, Canada, and Puerto Rico.


Nextiva’s SIP unmetered plan
Starts at


/mo per user
Includes unlimited calling in the United States, Canada, and Puerto Rico.


If you’re wondering how this phone service works in practice from an admin perspective, we send a pro-forma invoice to the email address for the account.

This happens five days before you’re charged the monthly recurring fee. We bill you at the beginning of the month for the new month you are entering.

The only arrears billing happens with the per-minute charges for our SIP unmetered plan or any toll-free calls to your Nextiva SIP trunk account.

If you’re looking at your current PBX bill and comparing it to the above numbers, you already know what makes SIP trunking affordable.

(In that case, you also may want to pull your hair out because of the money you’re throwing away.)

Here are the reasons why SIP trunking is so affordable:

  • There’s no need for expensive POTS (short for Plain Old Telephone Service) lines
  • Lower cost of per-minute calling, even on metered plans
  • Free calls between your employees and offices
  • It maximizes your existing phone system and connecting it to a cloud PBX

If your company is growing, a traditional phone system will actually punish you for that. Hiring more people means adding more phone lines.

With PRI (Primary Rate Interface), you’re using a traditional phone line to make phone calls. Each PRI circuit allows for up to 23 simultaneous calls. If you need more, you have to buy PRIs in bundles of 23 channels at a time.

Your bill becomes unnecessarily high because you’re paying for a number of channels you don’t need. This system doesn’t give you flexibility or predictability in your recurring or upcoming expenses. It makes scaling particularly difficult if you’re growing your call center.

SIP trunks make it easy to upgrade to a higher plan at any time. You can add more concurrent calls (also known as SIP channels) and phone numbers in real-time.

All the benefits of the cloud minus
the hardware costs

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Save ~65% from existing phone lines
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Unlimited calling across the US and Canada
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Modernize your existing IP PBX
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Scale up whenever your company needs
Keep your existing hardware
Leverage your existing hardware
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Optimize call quality with dynamic routing
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"We tried several SIP Trunk providers to ensure that whichever SIP provider we chose would work successfully for us. After narrowing the decision down to three options, I presented them to our leadership and they made the recommendation to go with Nextiva."

Jeff Rudd, IT Manager

Ready to cut costs with
SIP Trunking?

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Why Nextiva
SIP trunking

8 Nextiva Data Centers
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Centralized trunks with an IP core

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99.999% uptime

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8 points of presence and carrier-grade data centers

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Award-winning customer service

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Fraud mitigation with access control policies

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E911 coverage in the US and Canada

Zero outages in 2019.
SIP Trunking you can trust.

Steve Wozniak

I'm a big fan of companies like Nextiva.

Steve Wozniak
Co-Founder of Apple

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"We love Nextiva's reliability and features like auto attendant, IVR and call routing. It gives us the appearance of a bigger more polished business."

Eric Siu, CEO
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Your personalized demo. What to expect:

  • Expect specifics. Tailored exactly to your business (we do our research).
  • Expect experts. Our product team will personally answer your questions.
  • Expect quickness. Personalized, specific, clear, and to the point - you’re busy!

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