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SIP trunks

Keep the phone system you own and replace its old lines with SIP.

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When SIP suits

  • Your phone system is supported and works well
  • You need to move off ISDN or analogue lines
  • You run 3CX or another IP phone system

What we check

Phone system compatibility, concurrent calls and your connection.

Why choose your cloud phone system with Forever Systems

We are vendor-neutral. We supply and support several cloud phone platforms, so we recommend the one that fits rather than the one we happen to sell.

  • Side-by-side comparison of hosted VoIP, 3CX and Microsoft Teams Phone for your users
  • Number porting, handsets and set-up handled for you
  • Connectivity checked so call quality is right from day one
  • UK support for moves, adds, changes and faults
  • For BT Cloud Voice and the PSTN switch-off, see our BT Business Partner site cloudvoice.cloud

We work with businesses, schools, charities and public sector organisations. We do not sell consumer phone services.

Want a side-by-side cloud phone system quote?

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

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Frequently asked questions

How many SIP channels do I need?

One per simultaneous call. We size it from your call patterns.

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