Connect your PBXs and Analogue Devices

Keep critical PBXs and analogue devices connected without disruption, while evolving to cloud voice at your own pace.

Diagram showing active PBXs and analogue device.
Diagram showing connecting existing PBX systems to Callroute.

Bring Legacy Voice Into The Cloud

Many organisations still rely on existing PBXs and analogue devices that can’t be removed overnight.

Callroute allows you to keep these systems operational while gradually transitioning to modern cloud voice platforms.

Easily connect your PBXs and analogue devices. Callroute brings together legacy voice alongside Microsoft Teams, Webex, contact centres and Voice AI.

How it works

1) Connect your PBX

Connect your existing PBX to Callroute using a SIP trunk. Your numbers and services remain operational while Callroute provides central routing control.

2) Bring analogue into Callroute

Use an ATA to convert analogue devices into SIP endpoints, allowing them to connect to Callroute via SIP trunk or SIP registration.

3) Transition in phases

Move users and services from PBX and analogue environments to cloud platforms over time. Callroute keeps numbering consistent and routing flexible throughout the journey.

Diagram showing a connected PBX.

Use Cases

Callroute can be used solely to manage SIP devices, or alongside cloud calling platforms such as Microsoft Teams Phone or Webex Calling.

Hybrid estates across multiple sites

Support different voice systems across different locations — PBXs in some sites, cloud voice in others — with consistent routing and number management.

Supporting regulated or safety-critical devices

Maintain connectivity for analogue devices such as lift phones, alarms and emergency systems while modernising the rest of your voice estate.

PBX to Cloud Voice migration

Keep your PBX running while transitioning users to cloud voice. Avoid “big bang” migrations and reduce operational risk.

What Our Customers Say

“Overall very good. Its a simple product, easy to use. Company good to deal with, quick to respond to issues and knowledgeable support team.

Quick to assign numbers to users. Very easy to find either free unused number or those that are allocated and who to. Tagging system is useful for reporting.”

Toby

Head of Service Management in UK

Publishing, 1,001–5,000 Employees

“Overall, my experience with Callroute was solid. The platform offered strong integration capabilities and simplified several aspects of voice routing and number management. While there were areas that could be more intuitive, the core functionality was dependable and added value operationally.
What I liked most about Callroute was how seamlessly it integrates with existing communication platforms. It removes a lot of the complexity around voice routing and number management, which makes day‑to‑day operations much smoother.”

Verified Reviewer

Verified User

Insurance, 11–50 Employees

“A modern telephony integration provider without high costs.
Fantastic! Ease of initial implementation, ease of renewals of services a year down the road (annual payment plan saved a decent amount too). Very responsive team if any issues crop up.
A very easy company to do business with, who will tailor a solution to your needs and fit in with your budgets. Well priced solutions.”

Lawrence

IT Infrastructure Manager in UK

Pharmaceuticals, 51–200 Employees

“Our partnership with Callroute has always been outstanding. Communication is seamless, and they consistently demonstrate exceptional customer focus. They are not just a partner; they are a true enabler of global telephony uptime. Their support is exceptionally responsive and a pleasure to work with, even on the rare occasions it’s needed.”

Dave

Health, Wellness & Fitness, 1,001–5,000 Employees

Telephony Engineer in UK

Used the Software for: More than 2 years

“Happy user. Has been great. This makes it much easier to manage numbers. Ease of use and quick support when I have had any issues.”

James

Technical Specialist - Collaboration in US

Packaging & Containers, 10,000+ Employees

Used the Software for: Less than 6 months

“A fantastic experience. We are about 18 months into our journey with Callroute…and I highly recommend the solution and the…support and attention to detail.

Adam

Head of IT Security in UK

Environmental Services, 1,001–5,000 Employees

Used the Software for: Less than 2 years

“Very good product and a user friendly interface. Callroute product is simple and easy to configure with your own Microsoft tenant. I also like the simplicity of the Callroute app.”

Verified Reviewer

Insurance

11–50 Employees

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Frequently Asked Questions

Yes, you can try Callroute free with a 14-day trial. No credit card and no commitment required. Your trial includes:

  • 1x UK 0330 number
  • 1x single concurrent call limit
  • Connect up to 4 Microsoft Teams tenants
  • Explore all Callroute Teams Calling features
  • Explore all Orto Teams User Management features

To get started, book a guided setup session so we can tailor the trial to your requirements. All you need is an email address, which you’ll verify during setup.

No. Callroute is a control and routing layer. Your PBX continues to provide end-user calling features where required.

Yes. Callroute does not force migration timelines. Legacy systems can remain connected for as long as needed.

Analogue devices connect via an ATA, which converts analogue telephony into SIP so it can be routed through Callroute.

Common examples include lift phones, alarms, door entry systems, paging/tannoy systems and factory floor phones.

Yes. Callroute is built specifically for hybrid environments where multiple voice systems coexist.

No. Callroute centralises numbering and routing, reducing the need for fragmented carrier setups across legacy and modern systems.

Book A demo

Join over 150,000 other users that use Callroute to stay connected, and manage their numbers and users more efficiently.