Data Installation & Supplies Ltd
Data Installation & Supplies Ltd
Data Installation & Supplies Ltd

Voice Systems & SIP Trunks

Ensuring you have a reliable, high-quality phone line is key to allowing people to get in touch with you and giving them the right impression. Nobody wants to be talking to a potential customer and have their voice crackle or the line cut out. We can supply fully scalable, IP, hosted telephony systems with a variety of features to suit your needs. Our unified communications solutions will take the hassle and expense away from having to work with multiple providers for your requirements.

The latest IP telephony systems additionally allow you to combine voice, video and messaging (including IM) on a single platform. This means that DIS can deliver a media-rich, versatile solution allowing all users to stay fully connected, giving you the ability to conduct video meetings from your desks while reducing the time and costs associated with travelling to meetings.

Utilising a hosted telephony system is much more cost-effective than a more traditional system. The cost of WAN bandwidth is decreasing, meaning that the savings that IP telephony offers are gradually increasing. Our expert team has extensive experience in designing, deploying and supporting IP voice systems. In a multi-site corporate network, the ability to transmit internal calls across WAN links eliminates all of the phone call costs associated with traditional systems.

What are the benefits?


Cost efficient voice communication solution


Easily scalable systems take seasonality future growth into account


High call quality


No change to your existing numbers



The solution your company needs may differ greatly from another company’s, so we don’t offer generic systems. We work with you to determine what exactly you require from your voice system and then our team of expert engineers will work to create a tailored solution to meet these requirements.


DIS understands how critical it is to avoid interruption to your business. Our expert team of professionals can deploy a new voice system as quickly and smoothly as possible.



Advancements in IP telephony technology mean that additional unified communication features can be included in a system, including voice, video and text messaging. This flexibility means that we can design solutions to meet all of your requirements, budgetary and functionally.

Maintenance & Support

We can also design a bespoke maintenance package to complement your telephony system, offering features like 24/7 access to remote and on-site assistance, access to our extensive Support Portal and more. These contracts can provide you with the additional peace of mind of knowing that DIS will work quickly to get your systems operational again.

“Puma UK have worked with DIS for many years, they are our ‘go to’ for
all things IT infrastructure, CCTV and access control solutions.”

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