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SIP Services- SIP Trunks

SIP trunks offer a more flexible and lower cost alternative to ISDN for inbound and outbound voice calls.

SIP trunking is a standards-based replacement for traditional ISDN. It connects your PBX to the PSTN via broadband, ethernet or private circuit into our providers national network.

Key Benefits

  • Save money on call costs and line rental

    SIP delivers less costly, more reliable connectivity than ISDN over an IP connection. It can save up to 50% on line rentals and 25% or more on call costs.

  • Free internal calls and great features

    Perfect for medium or large organisations with multiple sites, not only will you save on your line rental and call costs, but you’ll get free internal calls within your organisation and a whole host of great features.

  • Scale up and down when you want

    SIP trunks are ideal if you are moving, upsizing or downsizing and want to keep your existing numbers. Scale up lines during busy periods and back down again afterwards. You can add lines, take them away, split calls at any time. You are always in control.

  • Built-in Business Continuity

    SIP trunks can handle emergencies easily. They are inherently disaster recovery / business continuity ready, letting you reroute calls to an alternative location quickly and easily.

  • Compatible with Skype® for Business

    Our SIP trunks are integration tested and approved to interoperate with Microsoft Skype® for Business, allowing you to directly connect to the platform to make external calls.

Talk to our experts and optimise your IT and security setup today

4th Platform can help you with bespoke IT requirements, call us on 0333 240 8139

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