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3CX support for existing clients.

If your business already runs on 3CX, we provide ongoing support, maintenance, and management for your existing system. For new phone system setups, our recommended solution is Microsoft Teams calling.

VoIP app/VoIP software

If your business already runs on 3CX, we provide ongoing support, maintenance, and management for your existing system.

For businesses setting up a new business phone system, our recommended solution is Microsoft Teams calling, which integrates directly with the Microsoft 365 environment most of our clients are already using. You can read more about that on our Teams Calling page.

This page covers what we offer for businesses already using 3CX.

What we support

Ongoing maintenance and troubleshooting

We monitor and maintain existing 3CX deployments, handling configuration changes, troubleshooting call quality or connectivity issues, and keeping the system running reliably.

User and extension management

Adding, removing, or reconfiguring users, extensions, call queues, and auto-attendant settings as your team changes.

Number porting and provider management

Support with SIP trunk providers and number management for businesses continuing to run 3CX.

Security and updates

3CX, like any phone system, needs to be kept patched and properly configured to avoid being a security risk. We manage this as part of ongoing support.

Should you stay on 3CX or move to Teams calling?

If your business is already using Microsoft 365, moving your phone system to Microsoft Teams calling is generally the better long-term option. It consolidates your phone system into the same platform as your email and collaboration tools, removes the need to manage a separate system, and benefits from the same security controls (MFA, conditional access) as the rest of your Microsoft 365 environment.

If you are currently on 3CX and it is working well for your business, there is no requirement to change. We will continue to support your existing system. If you are interested in understanding whether moving to Teams calling would suit your business better, we are happy to talk through the options as part of a free site survey.

Part of your managed support contract

3CX support and maintenance is available for existing clients as part of a managed support contract. For businesses setting up a new phone system, we recommend discussing Microsoft Teams calling as the primary option.

One monthly fee. One number to call.

Whichever phone system your business runs, keeping it working becomes our job, not yours.

Book your free site survey   or call +44 (0) 207 403 4031

Frequently asked questions

Does Network Fish still support 3CX phone systems?

Yes, for existing clients already using 3CX. We provide ongoing maintenance, support, and management for current 3CX deployments. For new business phone system setups, our recommended solution is Microsoft Teams calling.

Should I move from 3CX to Microsoft Teams calling?

If your business already uses Microsoft 365, moving to Teams calling consolidates your phone system into the same platform as your email and collaboration tools, with the benefit of shared security controls. If your existing 3CX system is working well, there is no requirement to change — we will continue supporting it. We can talk through the options for your specific business as part of a free site survey.

What does 3CX support from Network Fish include?

Ongoing maintenance, troubleshooting, user and extension management, call queue and auto-attendant configuration, SIP trunk and number management, and keeping the system patched and securely configured.

Is 3CX support included in a managed support contract?

3CX support is available for existing clients as part of a managed support contract. Speak to us about including it if your business currently runs 3CX.