Intelligent SIP

Provide your organisation with far greater flexibility and scalability than traditional ISDN circuits, as well as significantly reducing line rental and on-going call charges.


With BT announcing the retirement of all ISDN services in the UK by 2025, now’s the time to plan your move to SIP. Our service is reliable and has the flexibility to scale up and down as and when your business needs to grow, shrink or change.

Reduce your costs

Our SIP-based VoIP services have lower fixed costs and lower call charges than ISDN.

Seamless connectivity

Our service is fully compatible with on-premises PBXs that support SIP, with full support for Direct Inward Dialing.

Quality of service

We use Broadsoft and Acme Packet technology to deliver the highest level of VoIP quality over open-standard SIP trunks.

Integrated hosted telephony

Combine your SIP trunking with hosted telephony and boost your head-office systems with cloud-based telephony applications to support remote offices or home workers.