Welcome to Antheus!

Antheus has been at the forefront of VoIP (Voice over IP) technology for over 10 years, specialising in contact centre systems as well as business phone systems for the SME market.

Looking for an Award Winning WebRTC Contact centre? You’ve come to the right place.

As a one stop shop for business IP phone systems, Antheus can address all of your company’s telephony needs, from system design and analysis, security, networking, disaster recovery through to supplying hardware and software. We supply and install the Asterisk VOIP PBX system (both on premises and hosted) as well as the Vicidial and Liberalis call centre systems.

Our Experience


Areas of expertise

Scalable Solutions

Our award winning Liberalis® Contact centre system is highly scalable, from just 10 seats to 1,000. We’ve achieved this by engineering a highly flexible solution written at the core level in C++

Because of its modular design, the system can scale both up and down as your needs change

Liberalis is gentle on your bandwidth too, by using Javascript on the real-time front end, as only the parts of the screen that need to change are updated

By using the optional WebRTC module, there’s no longer a requirement for any form of IP phone (hard or soft) as all audio is sent securely using the browser, removing not just the SIP overhead but also the associated security (Toll fraud) issues

All you need is a headset and a browser and you’re done

** Liberalis supports a combination of IP phones and WebRTC


If your call centre isn’t running for even an hour, we know it’s costing you money just having the agents sitting there, never mind the loss of sales. You rely on a system that simply works 99.99% of the time

We’ve built our reputation of providing very high uptime systems by doing just that, namely as far as possible providing ‘Five Nines’ reliability

We achieve this by using quality equipment in our datacenters. Not just the servers, the network infrastructure too, with constant real time monitoring 24/7

We’ve invested heavily in our core systems over the last few years to build a robust system, so you don’t have to worry

We don’t just know call centre systems inside and out, we also know about the networking side too

24/7 Monitoring

We monitor virtually every aspect of the systems providing your call centre system 24/7

We use SNMP monitoring of the physical hardware. Alerts are sent to our support centre if there are any issues with the systems’ temperatures, disks, memory etc. Even if a fan fails or starts to run slowly, we know about it immediately

Disk capacity is closely monitored and alerts are triggered well before they reach critical levels. All servers have at a minimum mirrored hot swap drives with automatic rebuilds in the event of a drive failure. In addition extensive use is made of database replication. If the slave replication fails or falls too far behind, engineers are alerted

In short, we aim to be one step ahead of potential failures, keeping your operation going with minimal downtimes 24/7


We make a point of knowing our ecosystem inside and out

By knowing everything about everything to do with call centre provisioning, we are your one stop shop

All our servers run the Linux operating system, the only choice for mission critical applications and we have used a single vendor (HP) for hardware for the last 10 years

We own all of the equipment and do not outsource any. This means we have a standard build that we know will work

As members of RIPE, we have our own independent IP address space and peer directly with many networks including LINX. In short we are our own ISP

We also have in house developers that allow us to enhance our call centre systems as well as providing customisation

Our specialisation

At Antheus we specialise in all areas of telecommunications. As a company we’re 90% technical and we live and breathe the products we deal with.

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Hosted PBX

We have provided hosted phone systems from 1 extension to over 300 handsets spread around the UK

On-Site PBX

On premises PBXs are available with various connectivity options to the PSTN or hybrid VoIP/PSTN systems

SIP and IAX Trunks

We have thousands of SIP and IAX trunks available for our customers

Lease lines and broadband

As a Telco, we are able to provide a wide range of connectivity such as PSTN, ISDN, lease lines and broadband


We have a highly skilled team with years of experience in customising systems and reports

Local and international numbers

Antheus can supply inbound numbers for any area code in the UK as well as non-geographic ones. We can also setup international numbers for most countries

Our Products

Our core business is providing systems to call centres within Europe but focused on the UK. We also provide high availability phone systems for critical services such as healthcare as well as regular business systems

Vicidial Logo

Antheus is the Vicidial partner for the UK

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Antheus Logo
Antheus Liberalis®

The award winning Liberalis outbound contact centre system with WebRTC

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Hosted PBX
Hosted PBX

Business quality hosting from 1 handset to hundreds

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