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BT Cloud Voice SIP

Keep your existing on-site phone system for now, and replace its ISDN or analogue lines with SIP trunks from BT.

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When SIP makes sense

  • Your phone system is recent and still supported
  • You want to replace ISDN without replacing handsets yet
  • You plan to move to hosted BT Cloud Voice later

What we check

Phone system compatibility, number of concurrent calls, and your internet connection.

Why buy BT Cloud Voice from Forever Communications Limited

Forever Communications Limited is part of Forever Group and a member of the BT Business Partner channel. We supply, set up and support BT Cloud Voice for UK businesses, schools, charities and public sector organisations.

  • A named partner who plans your numbers, call flows and handsets with you
  • Number porting managed for you, timed to avoid downtime
  • Connectivity checked first, so call quality is right from day one, with BT business broadband and BTnet available if you need it
  • Ongoing support for moves, adds, changes and faults

BT Cloud Voice is a business service. We do not sell consumer or home phone products.

Want a BT Cloud Voice quote for your team?

Tell Forever Communications what you need and we will come back to you with options, not a hard sell.

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Frequently asked questions

Will my existing phone system work with SIP?

Many do. We check compatibility before you order.

Can I keep my numbers?

Usually, yes. See numbers and porting.

More about BT Cloud Voice

HomeBT's hosted phone system from a BT Business Partner.FeaturesCall handling, apps and management.PricingHow licences and contracts work.Cloud Voice ExpressBT Cloud Voice for small sites.HandsetsDesk phones, cordless and headsets.Numbers and portingKeep your numbers, add new ones.Call recordingRecord, store and review calls.Microsoft TeamsBT Cloud Voice with Microsoft Teams.PSTN switch-offWhat the 2027 switch-off means for you.