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3CX Phone System

3CX Phone System connects every desk, mobile and home office with powerful modern features and crystal-clear calls.

Spin up unlimited extensions, blend Microsoft Teams and CRM workflows, and work from anywhere via web or smartphone apps.

Designed, migrated and supported by our 3CX Platinum Partner experts, the platform lowers costs while keeping every conversation fast, secure and future-ready.

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Empowering Your Communication Needs

Discover the transformative impact of partnering with us for your 3CX Phone System needs, offering unparalleled support and innovative features.

Seamless integration

Seamless Integration

 Effortlessly connect with Microsoft Teams and other platforms for a unified communication experience. 

 

Unlimited Extensions

Unlimited Extensions

Offer unlimited users and extensions at no extra cost, ensuring your business can scale effortlessly.

 

 Cyber Security

Enhanced Security

Benefit from advanced security features that protect your communications without compromise.

CRM Compatibility

CRM Compatibility

 Easily integrate your existing CRM systems for improved efficiency and customer management. 

 

Cost effective solutions

Cost-Effective Solutions

Enjoy significant savings with free web and smartphone apps, reducing overheads and increasing accessibility.

Free training resources

Free Training Resources

Access a comprehensive library of free 3CX training videos, empowering your team with the knowledge to succeed.

Our customers

one2call-customer-logo-ITV-studios
one2call-customer-logo-chiquito
one2call-customer-logo-sheffield-wednesday-fc
one2call-customer-logo-HEB-group
Sheffield United FC
one2call-customer-las-iguanas
one2call-customer-logo-yard-ball
one2call-customer-logo-killis
one2call-customer-frankie-and-bennys
one2call-customer-logo-leeds-united-fc
one2call-customer-logo-saxton-mee
one2call-customer-england-golf
one2call-customer-logo-the-pet-vet
one2call-customer-logo-motorfinity
one2call-customer-firehouse-fitness
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Ready for a chat?

Our expert consultants are ready to help.

Let's spend 15 minutes exploring your business challenges and how we can help.

3CX Phone System FAQs

What is 3CX?

3CX is a software-based PBX (Private Branch Exchange) that delivers voice, video, chat, and contact centre capabilities over the internet.

Unlike traditional phone systems, it’s flexible, scalable, and can be hosted on-premise or in the cloud. It supports mobile and desktop apps, integrates with Microsoft 365, and offers advanced features like voicemail-to-email, call recording, and hot desking.

3CX is ideal for businesses seeking a unified communications platform that reduces costs while enhancing functionality and user experience.

Can 3CX integrate with CRM?

Yes, 3CX offers built-in CRM integration with many popular platforms including Salesforce, Zoho, HubSpot, Zendesk, and Freshdesk.

These integrations allow automatic call logging, screen pop-ups with customer details, and streamlined workflows between your phone system and CRM.

This enhances customer service by giving staff immediate access to relevant data during calls. Integration is available out-of-the-box with templates for most major CRMs, and custom integrations can also be developed using 3CX’s API.

Is 3CX secure?

3CX is designed with enterprise-grade security in mind.

It uses encryption protocols like SRTP and TLS to protect voice traffic and prevent unauthorised access.

Features like role-based access control, regular auditing, and automated backups further enhance security.

For added protection, a 3CX partner and security expert like One2Call can help ensure compliance and reduce internal risk. We will ensure security is continuously updated through patches and feature releases, making 3CX a robust choice for secure communications.

Can I use 3CX remotely?

Absolutely. 3CX is built for remote and hybrid work environments. It supports mobile and desktop apps, browser-based calling, and remote office bridging.

Users can make and receive calls, join video meetings, and access voicemail from anywhere with an internet connection. Integration with Microsoft Teams and calendar-based status updates ensures seamless communication even when working off-site.

This flexibility makes 3CX ideal for distributed teams or businesses with mobile workforces.

What are the costs involved with 3CX?

3CX pricing is based on simultaneous call capacity rather than per-user licensing, making it cost-effective for growing businesses. An unlimited number of users can be added for free at any licence level. Licence costs start from a few hundred pounds per year, but this excludes things you'll need like hosting lines, support and configuration.

As a 3CX Platinum Partner, One2Call offers a fully managed 3CX solution that includes everything you need: 3CX licence costs, server hosting, maintenance, security, line rental, and unlimited support tickets. This worry-free package ensures your phone system is always up-to-date, secure, and supported—without the need for internal IT resources. It’s ideal for businesses looking to simplify telecoms management while maintaining flexibility and control over their communications infrastructure.

What is 3CX?

What is 3CX?

3CX is a software-based PBX (Private Branch Exchange) that delivers voice, video, chat, and contact centre capabilities over the internet.

Unlike traditional phone systems, it’s flexible, scalable, and can be hosted on-premise or in the cloud. It supports mobile and desktop apps, integrates with Microsoft 365, and offers advanced features like voicemail-to-email, call recording, and hot desking.

3CX is ideal for businesses seeking a unified communications platform that reduces costs while enhancing functionality and user experience.

Can 3CX integrate with CRM?

Can 3CX integrate with CRM?

Yes, 3CX offers built-in CRM integration with many popular platforms including Salesforce, Zoho, HubSpot, Zendesk, and Freshdesk.

These integrations allow automatic call logging, screen pop-ups with customer details, and streamlined workflows between your phone system and CRM.

This enhances customer service by giving staff immediate access to relevant data during calls. Integration is available out-of-the-box with templates for most major CRMs, and custom integrations can also be developed using 3CX’s API.

Is 3CX secure?

Is 3CX secure?

3CX is designed with enterprise-grade security in mind.

It uses encryption protocols like SRTP and TLS to protect voice traffic and prevent unauthorised access.

Features like role-based access control, regular auditing, and automated backups further enhance security.

For added protection, a 3CX partner and security expert like One2Call can help ensure compliance and reduce internal risk. We will ensure security is continuously updated through patches and feature releases, making 3CX a robust choice for secure communications.

Can I use 3CX remotely?

Can I use 3CX remotely?

Absolutely. 3CX is built for remote and hybrid work environments. It supports mobile and desktop apps, browser-based calling, and remote office bridging.

Users can make and receive calls, join video meetings, and access voicemail from anywhere with an internet connection. Integration with Microsoft Teams and calendar-based status updates ensures seamless communication even when working off-site.

This flexibility makes 3CX ideal for distributed teams or businesses with mobile workforces.

What are the costs involved with 3CX?

What are the costs involved with 3CX?

3CX pricing is based on simultaneous call capacity rather than per-user licensing, making it cost-effective for growing businesses. An unlimited number of users can be added for free at any licence level. Licence costs start from a few hundred pounds per year, but this excludes things you'll need like hosting lines, support and configuration.

As a 3CX Platinum Partner, One2Call offers a fully managed 3CX solution that includes everything you need: 3CX licence costs, server hosting, maintenance, security, line rental, and unlimited support tickets. This worry-free package ensures your phone system is always up-to-date, secure, and supported—without the need for internal IT resources. It’s ideal for businesses looking to simplify telecoms management while maintaining flexibility and control over their communications infrastructure.

More Telecoms

From business mobiles and phone system integration to managed telecoms and voice for Microsoft Teams, see how else we can help.

Our latest stats

(June 2025)
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99min

Average time to response

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6h

Average time to resolution

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%

Customer satisfaction score (CSAT)

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89

NPS score (scale -100 to 100)

Case Studies

Knowledge Base

Browse our latest news, blogs and resources.

Are your business devices fully up-to-date and secure?
Resources

Are your business devices fully up-to-date and secure?

Are you stuck in Patch 22? More business needs more devices, but more devices means more security patching? Read about how to avoid Patch 22.
One2Call Named Finalist at South Yorkshire Apprenticeship Awards 2025
Company News

One2Call Named Finalist at South Yorkshire Apprenticeship Awards 2025

One2Call Ltd has been named afinalist in the South Yorkshire Apprenticeship Awards 2025, shortlisted in the highly competitive SME Employer of the Year categor
Cyber Essentials 2025: What SMEs need to know about the upcoming changes.
Resources

Cyber Essentials 2025: What SMEs need to know about the upcoming changes.

Significant changes are coming to the Cyber Essentials certification with the introduction of the Willow Question Set. Learn more about how this will affect your business.