Sipsynergy has been delivering hosted voice and SIP services to UK businesses for many years.
Today, however, our focus is firmly on Callroute, our flagship service built to simplify telephony and connect calling directly into collaboration tools like Microsoft Teams and Webex.
As part of our evolution, Enterprise Hosted Voice (EHC) will be retired, while Business Hosted Voice (BHC) will transition to Callroute’s modern, AWS-hosted cloud platform.
Business communication has shifted, with Microsoft Teams and Webex now leading the way in collaboration. Organisations want calling built directly into these tools — not added on.
Callroute delivers this. It provides a simple, scalable way to move your telephony into modern cloud platforms.
As we modernise, EHC will be retired and BHC will transition to Callroute on AWS. Sipsynergy remains the business behind your service, but our roadmap is now fully focused on Callroute.
If you are a current customer, your existing services remain fully supported for the time being and will continue to operate as normal. This includes:
Enterprise Hosted Voice (EHC) – This service is scheduled for retirement, and we will soon share detailed end-of-life timelines along with clear migration guidance.
Business Hosted Voice (BHC) – The BHC service is currently being migrated to Callroute’s cloud platform. Once completed, all associated phone numbers will be fully manageable through the Callroute portal. This will provide customers with additional options to seamlessly migrate to Teams Phone or Webex Calling at a pace that suits their needs, or continue using BHC, which will remain fully supported.
SIP Trunking – Your SIP trunking service will be migrated to Callroute for improved flexibility and management. Some equipment reconfiguration may be required, and full guidance will follow soon.
The future of our voice services is centred on Callroute, providing centralised number
management and flexible routing to your preferred voice platform.
We encourage customers to begin migrating now to benefit from simplified operations, modern integrations such as Voice AI, and a future-proof solution.
Every organisation has different needs, which is why we provide multiple migration paths.
No matter which route you choose, our team will guide you at a pace that suits your business, with no disruption and no surprises.
Callroute SIP Trunking
Keep your existing numbers with us and simply move your connectivity to Callroute’s SIP trunks. A straightforward step towards modernisation.
Microsoft Teams Calling with Callroute
Migrate fully into Teams for a seamless calling experience inside Microsoft’s collaboration platform. Gain easier management, scalability, and lower long-term costs.
Webex Calling with Callroute
For businesses committed to Cisco collaboration, we also support migration into Webex Calling, fully integrated through Callroute.
Migrating to Callroute enables us to offer higher reliability, increased flexibility, and a unified solution that seamlessly integrates with Microsoft Teams, Webex, and SIP-based environments.
By migrating to Callroute, you’ll benefit from:
Enterprise-grade resilience on AWS
Seamless integration with Microsoft Teams and Webex
Flexible SIP trunking options to support your transition
Simplified management for IT and easier provisioning
Lower long-term cost and complexity with ongoing innovation built in
For Enterprise Hosted Voice (EHC) customers, we will soon share detailed end-of-life timelines along with clear migration guidance.
For Business Hosted Voice (BHC) customers, the BHC service is currently being migrated to Callroute’s cloud platform.
For SIP Trunking customers, your SIP trunking service will be migrated to Callroute. Full guidance will follow soon.
We recommend taking the following next steps:
1. Explore Callroute
Learn more about our flagship service at www.callroute.com.
2. Review Your Current Services
Contact us to review your existing setup and discuss your best migration path.
All sipsynergy services are supplied subject to terms and conditions which are available on written request to: Sipsynergy Limited, Wessex House, Upper Market Street, Eastleigh, Hampshire SO50 9FD. (Company number 07613922).