As more and more businesses choose to migrate their infrastructure and communications programmes to the Cloud, choosing a VoIP provider is a crucial part of making your operations digital. With the working world undergoing huge changes, you might be aware of how much a difference to your everyday working life this form of communications can bring about: so what should you look for when choosing a VoIP provider? 

Securing your connections

Arguably the most important element of your digital communications systems, telephony with a watertight security net surrounding it should be at the top of your list when you’re choosing a VoIP provider. As well as ensuring your information can’t be infiltrated by cyber attackers, potentially saving you the cost of your business as a result of a crackdown on GDPR legislation, a VoIP provider that comes with a comprehensive security plan in place helps guarantee the quality of your communications too. There’s nothing worse than trying to make a call over a shaky line or having to repeat yourself because of an unexpected problem. A security-conscious VoIP provider will usually host your communications solutions within a military-grade data centre, protecting your telephony with ever-evolving security updates, and leaving you safe in the knowledge that you’ll always get a steady connection. 

Always Accessible: Choosing a VoIP provider

Making the most of your budget

One of the biggest draws for small businesses, or companies that are quickly growing, VoIP enables you to make a larger number of calls for a much cheaper monthly budget. Rather than installing expensive physical hardware alongside extra added costs of overseas calls, VoIP allows you to make as many calls as you need across a broadband connection, all for a reduced price. However, making sure your VoIP provider has a comprehensive back up and disaster recovery plan and a varied range of services will ensure you’re getting the lowest cost per call that so many VoIP provider outlets promise. 

Considering the extras you need

Finally, you could also consider the additional features you might need as part of the package your VoIP provider is offering. Whether your business is partnered to an organisation overseas, or you’re looking to take your customer service up a notch, your VoIP provider will be able to offer you the extras you need to keep your business running smoothly. From call waiting to conference calls, call forwarding and on-hold messaging, there’s a whole range of additional features available with a VoIP provider to help your everyday working life run that little bit more simply. 

Ready to revolutionise your digital communications? Whether you’re a telephony whizz or it’s your first time delving into the world of cloud computing, we’ve got all the knowledge you need to make sure you’re choosing a VoIP provider. Contact us to make constant connectivity your priority.

Always accessible: Choosing a VoIP provider

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Client Feedback

We are delighted to be working with CIS, the project is already looking well organised and innovative. CIS delivers a prompt professional service with trusted knowledge we can rely on at all times.

John Story, Head of IT

St Paul’s Cathedral

CIS have been our go-to IT supplier for nearly 20 years, and throughout that time they have been flexible, consultative, and above all putting our business at the forefront of their advice. I would be very pleased to recommend them for any company that needs to have a real partnership with their IT company.

Graham Hughes, Managing Director

Rovema UK Ltd


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CIS Overview



  • CIS Private Cloud
  • Infrastructure as a Service
  • Backup & Disaster Recovery
  • Remote Desktop Services


  • Anti-Virus & Ransomware
  • Extensive Encryption
  • Firewall & Next-Gen UTM
  • Penetration Testing
  • Digital Rights Management
  • Phishing
  • Mobile Device Management


  • Exchange Server Hosted & On Prem
  • Mail365
  • Unified Communications
  • Office 365
  • Mobile & VoIP Telephony
  • Internet Connectivity


  • Consultancy
  • Analysis & Audit Services
  • User Training & Enablement
  • Fully Managed Support


Since its inception in 1989 CIS’ philosophy has always been the same. We believe that in order for our team mates to provide the best possible service to our clients and to remain motivated and inspired themselves, we have to create a positive and stimulating working environment. One that encourages ambition, a continued exchange of ideas and dialogue, hard work, performance and loyalty. We have always rewarded our staff for going the extra mile and for embracing our company ethos but we also aim to make their working experience enjoyable and fun, working on the basis that humour can go a long way and fairness and respect are paramount.



Even though we say this ourselves, our portfolio is first class. We offer a range and quality of Cloud Services that can cater for all our customers’ business goals and aspirations. It’s our job to find the perfect solution for your requirements and you’ll benefit from the research and development carried out by our team to find the ideal system solutions for you.



Partners are vital to the ongoing success of our company so we nurture our award-winning network of like-minded organisations, building up mutual trust and respect in our working practices that can only benefit our customers.



It has always been of key importance to CIS to achieve high levels of productivity and to ensure that we remain s highly effective, lean and fast-moving organisation. It allows us to keep ahead of the game and to spot and act upon new products and trends whenever possible. By keeping on our toes, we can pass on benefits to our clients and partners without the need for time consuming learning curves.