01268 495555


Futureproof your phone system with ADSI Hosted VoIP

CALL US ON 01268 495555 or EMAIL

ADSI Hosted VoIP is a highly reliable and scalable system.  Our modern, digital VoIP system has 99.99% uptime and disaster recovery to divert calls to other devices, smartphones etc should the unthinkable happen.  We provide full support including training, number porting, provisioning and 24/7 UK-based assistance giving you complete peace of mind. For full details click here: VoIP 2017

Our VoIP product has the following accreditations;

local_ewh-5472-1  ISO9001  ISO14001  carbon neutral

ADSI Hosted VoIP saves you time and money.  Have just one number where your customers or team can reach you wherever you may be. Improve interoperabililty between mobiles and fixed telephones by allowing you to use your smartphone in the same way as you use your deskphone including call transfer, hold, internal extension numbers, divert, forward, combined voicemail and manyvoipb more.

We will completely manage your ADSI VoIP system for you.  As a customer you will have your own dedicated account manager, a single point of contact for all your telephony needs.

We use the best IP telephones, Polycom VVX series, with the highest voice qualitvoipy.  Our experts continually develop its IPPBX Cloud Telephony and regularly add new features and upgrades.  We actively seek input from our customers to assist our developments and when it comes to new ways to keep ADSI VoIP at the forefront of hosted telephony.

  • Why VOIP? find out what business use VoIP and why
  • VOIP Benefits – read more about the benefits VoIP can bring to your business
  • VOIP Features – find out what ADSI VoIP includes and what else you can add-on
  • For further information download our brochure here – adsi-voip-brochure


  • “Always been very happy with ADSI from day one. We get contacted constantly by other companies but we would never leave ADSI as the service is fantastic and our Accounts Manager is brilliant – he helps with all queries and is knowledgeable, friendly and  we feel confident that he  gets us the best deal. Many companies we’ve used over the years have been in it for the money only but with ADSI we feel that they really do put the customer first, can’t praise highly enough.”

    East Durham Community Transport
  • “Our account manager makes this otherwise stressful task of the comms pain free. We receive a personalised service and he is always on hand to advise us on maximising our telecoms whilst keeping an eye on budgets, all without compromising the high level of standards we have come to expect.   Because of this we have moved all our mobile needs to ADSI which goes against normal company policy where we by principle never use a sole supplier.”

  • “ADSI provide an excellent service and value for money”.

    Southend Christian Fellowship
  • “Thanks for being the perfect comms partner over the last 13 years.”

    Jelf Group
  • “I would just like to thank you for all your help over the last couple of months. I admit that I was hesitant at first but the service level of ADSI, your professionalism and expertise has been second to none. I would not hesitate to recommend your services to other business colleagues I know. I look forward to our on-going working relationship.”

    AM World UK
  • “We are really happy with overall service from ADSI; it’s great to have someone assigned to our account that can help us with any issues. Our overall phone costs have greatly decreased and we are extremely happy with ADSI.”

    McCue Corporation
  • “We have been with ADSI for a number of years now and I wouldn’t go anywhere else. Very professional company.”

    Kevin Locke Builders
  • “I am extremely pleased that I moved our account to ADSI and would gladly recommend them. We have made considerable savings by making the move, but have also enjoyed a far better level of service. In fact the best thing about working with ADSI is having a named account manager who deals with everything about the account. “

    Association of Teachers & Lecturers
  • “My Account Manager is extremely good at alerting us to areas where we could potentially save money within our business. We are more than happy with the service we receive from ADSI & I would strongly recommend them to other individuals or businesses.”

    Trans XL
  • “We have dealt with ADSI now for approx. 5 years, and have been continuously impressed with the good old fashioned level of customer service. Not only do they keep their eye on our account to make sure it’s the best value for us and offer us great deals on new products, but the back-up is second to none. I would have no hesitation in recommending them to business colleagues. Keep up the good work!”

    Pink Scaffolding
  • “ADSI offer a personal service delivered in a very professional way.  I am very satisfied with the service and support provide by ADSI.  I am confident that when I call, my questions will be answered without delay and this is delivered at a very competitive price.  ADSI look after their customers be providing a pro-active service that will let me know if I need to make any changes to my mobile account.  I am free to concentrate on other aspects of my business because ADSI are looking the mobile accounts.”

Accreditations Accreditations