Sip Trunks2018-10-16T11:39:51+00:00

Inbound SIP Trunk

£4 per month with FREE setup.

Receive calls on your on-site PBX via a SIP destination or SIP domain.
UK and international numbers. Option to buy blocks of numbers. Includes PSTN failover option.

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Inbound IAX Trunk

£4 per month with FREE setup.

Receive calls on your PBX via an IAX destination or IAX domain.
UK and international numbers. Option to buy blocks of numbers. Includes PSTN failover option.

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Outbound IAX Trunk

£25 one off fee

Make outbound calls through our Asterisk server using IAX. Integrates with your existing Asterisk-based PBX. Benefit from lower PSTN call costs.

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SBC Licence

£2 per month FREE set up

Allows you to route a SIP Trunk (In or Out) via an SBC platform, enabling communication with Lync and Avaya platforms.

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The Benefits of SIP Trunks and IAX.

On top of being faster and at a lower cost to your business, there are plenty of other additional benefits you can get by choosing Gradwell’s IAX and SIP trunking services. These include:

  • Reducing or eliminating ISDN line rental charges
  • The fact you can enjoy affordable call tariffs for external calls
  • You can bundle multiple numbers
  • Free VoIP calls within the Gradwell network
  • If you have an older switchboard you may need a gateway – we can supply these.

Sounds Great! But how do SIP Trunks Work?

VoIP is the communication of voice, data or video content over IP (Internet Protocol) networks. In simple terms, VoIP is the use of broadband for telephony and other services.

Ever used Facebook’s call function? That’s VoIP. FaceTime or FaceTime Audio? VoIP again. Skype? Well, you get the idea.

VoIP telephone services allow you to make low cost calls over the internet; using a multitude of different networks and operators, you can connect with members of staff, clients and customers across the globe both cost-effectively and efficiently.

There’s very little to get to grips with when making a VoIP call – you dial a number, and connect through to the person(s) on the other end – most of the time you won’t even realise the difference!

So what’s the point? Well, VoIP is incredibly cheap (sometimes free!), usually faster, more reliable and, what’s more, affords numerous flexible features. We have a complete guide to VoIP which can be found right here.

Still need some help?

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