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Take your PBX to the cloud with Nextiva's SIP trunking

Seamlessly transition your legacy PBX system into a powerful cloud system. No new equipment or service disruptions.

Talk with an expert

“Being able to make and receive calls reliably is crucial. By switching to Nextiva, we haven’t had any issue contacting customers no matter what phone network they’re on.” Jeff Rudd, IT Manager at Elkhart Clinic

What is SIP Trunking?

SIP trunking uses VoIP to move your Private Branch Exchange (PBX) system's call traffic over an internet connection. This way, your PBX connects with a Public Switched Telephone Network (PSTN) without traditional phone lines. No more Primary Rate Interface (PRI) or analog lines!

As for a SIP trunk...

A SIP trunk is a phone line that uses the SIP protocol. And so, a VoIP service provider like Nextiva can connect one or more channels to your in-house PBX.

All the benefits of the cloud minus the hardware costs

Cost savings
like never before

Save up to 70% of your current PBX bill with hosted PBX or SIP trunking. Goodbye, expensive hardware. Hello, cost-effective calling!

Unlimited
calling

Unlimited toll-free calling in the United States. Also get local and international calls. No more per-minute charges.

Modern
IP PBX

Connecting a hosted PBX to a SIP trunk is easier than via a PSTN. With a cloud phone system, comes real unified business communications.

Advanced business
phone system features

Voicemail to email, long-distance calling, unlimited inbound and outbound calls, local phone numbers, and more — all with one VoIP phone system.

Keep your
existing hardware

Keep your existing hardware Use your traditional phone system with an IP-based set-up. Avoid new equipment costs while getting better service.

Your voice and data
in one place

SIP trunking is like a gateway for your on-premise PBX to an Internet Telephone Service Provider (ITSP) like Nextiva.

Port your existing number to the cloud. Get started with SIP trunking.

Talk to an expert

Hosted PBX vs. SIP trunking — what's the difference?

Hosted PBX

Lower hardware costs since all you need are IP phones, routers, and high-speed internet.
Most VoIP providers have a monthly subscription fee.
Hosted PBX services let you add new phone lines in a few steps.
Your teams can access these phone lines from anywhere in the world.
With an online admin portal and easy-to-use features, you don’t need an IT team.
Requires minimal maintenance.

On-premise PBX + SIP Trunking

Needs on-site IP PBX servers and a SIP trunking service like Nextiva. Higher upfront capital expenditure.
SIP trunking charges may be per minute or channel.
SIP trunking with traditional PBX may need more on-premise servers.
Traditional phones need a LAN connection to the IP PBX.
An IT staff member is critical to maintain these on-premise PBX systems.
Needs ongoing maintenance.

Here’s what happens when you migrate to Nextiva SIP Trunking

Dedicated support to oversee migration and setup.

A full analysis of your network and current hosted PBX/legacy PBX system.

Our onboarding team works with you to establish the connections between your IP PBX and Nextiva's service.

Test all inbound, outbound, and concurrent calls. Troubleshoot any error reports.

Why Nextiva
SIP trunking

Centralized trunks with an IP core

99.999% uptime

8 points of presence and carrier-grade data centers

Award-winning customer service

Fraud mitigation with access control policies

E911 coverage in the US and Canada

Zero outages in 2019.
SIP Trunking you can trust.

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Take your PBX to the cloud with Nextiva's SIP trunking

What is SIP Trunking?