--- title: "VoIP and Business Phone Systems London | Network London" url: https://www.networklondon.co.uk/service/voip description: "VoIP phone systems from Network London. We set up calls, video and Teams calling, move your numbers across and look after it, with a real person to call." publisher: Network London legal_name: Network Support (London) Ltd updated: 2026-09-30 --- # VoIP and business phone systems in London Network London sets up and looks after VoIP phone systems for growing businesses. We handle calls, video, equipment and cabling, move your existing numbers across and connect your phones to Microsoft Teams if you use it. Our office is near London Bridge, and we support clients across the world. - Clear calls and video for everyone in your team, in the office or at home - Calls, video and messages in one place, including Microsoft Teams - A real person to call when something isn’t right with your phones ## Are your phones getting in the way of work? Do any of these sound familiar? - Calls and video meetings drop or break up, and clients notice. - When something goes wrong, you’re sent to a dashboard instead of a person. - Calls, video and messages sit in separate systems that don’t work together. We believe your phones should be simple to use and easy to get help with. ## VoIP phone systems, set up and looked after for you We’ve looked after business IT, including phones, for **20 years**. We set up your system, move your numbers across and look after it from then on. When something isn’t right, you call us. A real person answers, and they know your setup. Tell us how your team uses the phones and we’ll tell you what we’d recommend. ## What you get with our VoIP service - **Easy to get help**: Call, email or send us a message online and a real person replies. You won’t be left to sort it out in a dashboard. - **An honest look at what you have**: We look at your current phone system and connection and tell you plainly what we’d recommend. - **Everything in one place**: We can bring calls, video and messages together in Microsoft Teams, so your team and your clients have one way to reach each other. - **20** years looking after business IT - **100+** businesses across the world trust us with their IT - **17** people in our team, many of them here for years ## What our customers have to say Three of the 100+ businesses we look after, and what we do for them. ### Rossair IT support, the phone system and a website that brings in enquiries, all looked after by one team. [Read the story](https://www.networklondon.co.uk/case-studies#rossair) ### LAMDA Everyday support for 180 people, with access reviews and backup testing built into how they work. [Read the story](https://www.networklondon.co.uk/case-studies#lamda) ### A private equity firm A small team with serious duties to investors. We shaped their IT and cyber security policy and look after it day to day. [Read the story](https://www.networklondon.co.uk/case-studies#private-equity) ## How we move you to a new phone system 1. **Talk to us about your phones**: We talk through how your team uses the phones and what isn’t working, and look at your current setup. 2. **We plan and set up your new system**: We plan the system around how your team works, then set up the phones, apps and numbers. 3. **Your team gets on with their work**: Once everything is in place, anyone with a question calls us, and the person who answers knows your setup. ## What does our VoIP service include? - **Dedicated voice lines**: Broadband set up for voice traffic, so calls stay clear when the rest of the office is busy online. - **Everyday call features**: Our phone systems include the features offices rely on, such as ring groups and voicemail. - **Video conferencing**: Video meetings that work in the boardroom and for people joining from home. - **Hosted PBX**: A phone system hosted in the cloud, with call queueing and a virtual switchboard. Adding people and lines is straightforward. - **Equipment**: Phone handsets and accessories, chosen to fit how your team works. - **Number porting**: We move your existing phone numbers across, or set up new ones when you need them. - **Microsoft Teams calling**: We connect your phone system to [Microsoft Teams](https://www.microsoft.com/en-gb/microsoft-teams/group-chat-software), so people can make and take calls where they already work. - **Mobile apps**: Apps for iOS, Android and the web let people use their office number on their mobile, wherever they’re working. ## Tell us what you need Jessica, our Operations Director, reads every enquiry and replies personally the same day. The first step is a conversation about your business, what's working and where you need help. Prefer to talk? Call [0333 335 5020](tel:+443333355020). A real person answers, always. Thank you. Your message has been received and we'll be in touch shortly. Something went wrong sending that. Please call [0333 335 5020](tel:+443333355020) or email [letstalk@networklondon.co.uk](mailto:letstalk@networklondon.co.uk?subject=Network%20London%20-%20IT%20services%20query). ## Want to talk about your phones? Whether you’re looking for a new VoIP provider or have a problem with your current system, tell us what’s going on. Jessica, our Operations Director, replies to every enquiry personally, the same day. ### What is unified communications as a service? Unified communications as a service (UCaaS) brings calls, video meetings and messaging together in one system that runs in the cloud. Your team uses one app instead of several, and there’s no phone system to keep in the office. Microsoft Teams with a connected phone system is a common example. ### What are managed VoIP services? Managed VoIP means a provider sets up and looks after your internet phone system for you. With Network London, that covers setup, changes, updates and fixing problems. Your team uses the phones, and when something isn’t right, they call us. ### Can we replace our business landlines with VoIP? Yes. VoIP makes and receives calls over the internet, and it can do things a traditional landline can’t, such as calling from a mobile app or forwarding calls when you’re away from your desk. We move your existing numbers across and plan the switch with you to keep disruption to a minimum. ### What are the disadvantages of using VoIP? VoIP has a few drawbacks worth knowing about. Each one can be planned for: - **It depends on your internet connection**: if the connection is down or unstable, calls can drop or sound poor. The right connection, with a backup connection to fall back on, takes care of most of this. - **Power cuts**: VoIP needs power for the internet connection and the phones. A battery backup keeps phones running, and the mobile apps work over the mobile network. - **Call quality**: on a busy or weak connection, calls can lag or break up. A dedicated voice line, or a leased line with capacity set aside for phone traffic, keeps calls clear. - **Security**: like anything connected to the internet, a phone system needs protecting. We look after this as part of our [cyber security service](https://www.networklondon.co.uk/service/cyber-security). We plan for these with you when your system is set up. ### Are calls over VoIP free? Some are. Calls between VoIP systems, often on the same provider, are usually free. Calls to landlines and mobiles are normally charged, though often at lower rates than a traditional phone line, particularly for international calls. We offer plans with inclusive minutes for business users and will talk you through which one fits. ### What happens if internet goes down with VoIP? Your phone system is hosted in the cloud, so it keeps running when your office internet goes down. There are a few ways to keep taking calls: - **Mobile data**: the mobile apps let people make and take calls over the mobile network. - **A backup internet connection**: many businesses have a second connection that takes over if the first fails. We often suggest a dedicated connection for voice, with your main internet as the fallback. - **Call forwarding**: calls can be forwarded to another phone, such as a mobile, until the connection is back. As long as your team has the mobile apps, an internet outage at the office shouldn’t stop calls coming in. We plan for this with you when we set the system up. ## Looking for more managed IT services? - [IT helpdesk support](https://www.networklondon.co.uk/service/it-support): Everyday IT support from people who know your team and your setup. A real person answers the phone, and every ticket gets a human reply. - [IT system management](https://www.networklondon.co.uk/service/managed-it-infrastructure): We look after your servers, cloud services and network, and keep them secure and up to date. - [Cyber security](https://www.networklondon.co.uk/service/cyber-security): We look after your cyber security and help you answer the security questions your clients, insurers and investors send you. - [IT projects](https://www.networklondon.co.uk/service/managed-it-projects): We plan and run IT projects with you, from new cloud systems to network and server work. We add most value when we are involved early. ## The Cyber Security Vault: 22+ tools and apps Most of them are free. We'll send you our list of resources you and your team can use to improve your cyber security straight away. No technical knowledge needed. --- Network London, LM04.202, The Leather Market, Weston Street, London SE1 3ER. Telephone 0333 335 5020. letstalk@networklondon.co.uk. Network London is a trading name of Network Support (London) Ltd, registered in England and Wales, company number 05991874. Network Support (London) Ltd is owned by Verdani Solutions Group Limited, which also owns the Network London trade mark.