How SIP-Trunking will benefit your business

The best technology, tailored to your business

We actively review each individual site and advise on new connectivity options as they become available. Our networks have complete flexibility to evolve as your business changes and grows.

Cost-effective connectivity

We'll work with you to create a network that will work for your business, using our direct relationships with multiple carriers to get the best connectivity price at each of your sites.

Dedicated support, whenever you need it

We give each and every customer proactive account management throughout the entire service, not just in the initial stages, backed up by 24/7 support, a 100% availability SLA and regular service reviews.

We fully manage, so you don't have to

Our managed service includes design consultancy, transition support during your migration and onboarding, and assurance and reporting to monitor your investment and maximise its potential.

Keep your communications live and secure

Our Managed WANs can be configured in our MPLS cloud infrastructure to suit your business needs and can either be completely closed or include optional internet breakout.

Complete visibility across your organisation

As if visibility of your network's performance isn't enough, we also actively monitor your network to make sure everything's working as it should, dealing with any issues before they impact your business.

Plan ahead for the ISDN/PSTN switch-off

Traditional voice services - ISDN and PSTN - are being switched-off in 2025. That might feel like a long way into the future, but rather than leave your transition to the last moment, there's an opportunity to manage change your own way.

If moving your organisation to IP-voice all at once feels too disruptive, a phased approach could be the answer.

That's where KCOM SIP Gateway comes in, allowing you to migrate one phone, one site or whatever proportion of your telephony estate you choose, so you can start reaping the benefits of SIP in a measured way while managing the impact on your operations.

You'll have the benefit of experience when you migrate more of your estate to SIP Trunks, and you'll then be perfectly placed when the time is right to migrate a fully IP-based telephony solution such as SmartComms UC.

By that point, you'll be enjoying all the benefits of VoIP, from flexibility and scalability to reduced call costs, and the ISDN/PSTN switch-off won't impact your organisation.

Related products

SmartComms UC

With customer experience the biggest differentiator in today's competitive landscape, a smart Unified Comms system will help you stay ahead.


Combine intelligent traffic routing with our managed connectivity service for the performance you need, exactly when you need it.

Managed WAN

Keep your sites and people securely connected, and lay a robust foundation for your digital transformation.


Dedicated fibre and copper-based enterprise grade connectivity, from Fibre Ethernet to EFM and EoFTTC.


Connect your main and satellite offices or home-workers, or add resilience to your network with our fibre and ADSL solutions.