On-Premise Control. Trusted by Business.

On-Premise Phone Systems UK & Ireland | Hybrid & IP PBX Solutions

Prefer to keep your phone system in-house? Yellowcom delivers fully managed, on-premise business phone systems designed for reliability, flexibility, and cost control. Ideal for businesses with specific security, infrastructure or compliance requirements.

VoIP

What is an On-Premise Phone System, and Why Choose One?

An on premise phone system hosts your business communications on servers installed at your location. Unlike purely cloud-based phone systems, an on premise VoIP phone system gives you direct control over data, security, and system customisation — ideal for industries with compliance needs or businesses who want more flexibility in how they operate.

If you’re deciding between a cloud vs on premise phone system, think about your need for customisation, reliability, and control. We can help you find the right fit.

Our Proven Process

How We Deploy the Best On-Premise Phone Systems

Business Needs & Site Audit

We review your current telephony setup, infrastructure, and future growth plans to determine the best premise based phone system for your needs.

System Design & Installation

From PBX cabinets to desk handsets, we design and install your on premise phone system — set up for efficiency, scalability, and clear call quality.

Network Optimisation & SIP Trunking

We configure your network to prioritise voice traffic, integrating SIP trunks, ISDN or traditional PSTN lines for total resilience.

Ongoing Support & Upgrades

Our engineers provide on-site and remote support, proactive maintenance, and optional hybrid migration paths future-proofing your investment.

Trusted by Leading Businesses & Telecom Partners

CLIENT SUCCESS

See How We've Helped Businesses Thrive

Read how our tailored solutions and dedicated local support have made a real difference for businesses like yours:

Seamless Setup & Reliable Support

From the seamless setup of our new phone system to the reliable ongoing support, Yellowcom transformed our communication. Partnering with them was a fantastic decision.

Darver Castle

Ireland

Take 30 Seconds to Find Your Ideal Phone System

Not sure whether to choose VoIP, On-Premise, or a Hybrid setup? Answer three quick questions and we’ll guide you to the best-fit system for your business — based on how your team works, the devices you prefer, and your top priorities.

🎯 Benefits:

  • Tailored recommendations in under 30 seconds

  • Works for all business sizes and industries

  • Based on your actual setup, not assumptions

On-Premise Features

Key Features of Our Premise-Based Phone Systems

VoIP, SIP and Analogue Line Integration

Flexibly blend IP calling with traditional PSTN/ISDN where needed.

Custom Call Routing and Auto Attendants

Design smarter customer journeys with custom menus, call queues, and overflow routing.

On-Site Data Storage and Security

Keep sensitive call recordings and metadata local for compliance.

CRM and Software Integration

Seamlessly connect your phone system with Salesforce, Zoho, Teams, or your CRM.

Local Remote Management Options

Manage your system remotely with admin tools, no need for constant on-site visits.

Future Hybrid and Cloud Migration Ready

Choose an on-premise setup now with the ability to evolve into cloud later.

INDUSTRY EXPERTISE

On-Premise and Hybrid Phone Solutions for Every Sector

We understand the unique communication demands across different industries in the UK and Ireland. Find out how our tailored solutions help businesses like yours succeed:

What’s the difference between a hosted vs on premise phone system?

A hosted phone system is managed entirely in the cloud by a provider. An on premise phone system is physically installed at your location, giving you control over hardware, data, upgrades, and call routing.

If your internet connection is unreliable, an on premise phone system backed by SIP or analogue failover can keep your calls flowing even during broadband outages.

Yes. Many of our on premise VoIP phone systems are designed with cloud migration options in mind. We can plan a hybrid or full cloud move whenever you’re ready.

Not necessarily. While upfront costs are higher than cloud subscriptions, on-premise systems can save money long-term with lower licensing costs and hardware you own outright.

Healthcare providers, hotels, manufacturers, education centres, and financial services firms often choose on-premise systems for their control, security, and resilience.

Got Questions About Switching to VoIP?

Frequently Asked Questions

We’ve helped businesses across the UK & Ireland take full control of their communications with secure, on premise phone systems. Below are some of the most common questions we hear so you can make an informed decision with confidence.

03330 156 651

UK Contact Number

01263 5299

IE Contact Number