Image Banner

Discover the power of SIP Trunking

Flexibility With Numbers

SIP trunking enables you to move office and keep the same geographic number without any ongoing call-forwarding costs or those associated with producing new company stationery.

Save Money

SIP Trunks cost less than ISDN with lower call costs, free internal calls between extensions and offices and lower line rental costs for multi-sites. Also, no expensive call-forwarding costs are required should you relocate or need to divert calls in the event of a disaster.


SIP trunking provides a phone service that will cope with any situation and give you business-grade resilience for your telephony. Whether you need to keep your business running in a disaster or emergency or you need to load balance your calls between sites during peak hours, SIP trunking delivers.

Business Continuity

If your office has to be temporarily relocated in an emergency, this can be achieved quickly and cost-effectively with SIP trunking to keep your business working.

Line Rationalisation

For businesses with multiple sites, SIP trunking provides the opportunity for line rationalisation and reduces the number of PBXs you need to maintain while retaining full control of the numbers associated with your business.

Compatible with Microsoft Lync 2013

Connexin SIP Trunks are integration tested and approved to interoperate with Microsoft Lync 2010 and 2013, allowing you to directly connect to the MS Lync platform to make external calls.

Simple Pricing

Check out some of these add-ons:

SIP Trunk Channel(s)

Setup: £10.00 per channel
Monthly: £8.00 per channel per month

Additional channels can be added to your SIP Trunk. The more channels you have on your SIP Trunk, the more calls you make and receive. Each additional channel will come with a bundle set of free minutes.


UK DDI Numbers

Setup: £10.00 per DDI number
Monthly: £2.00 per DDI number per month

Additional UK DDI numbers can be added to your SIP Trunk. You can add as many numbers as you like.

SIP Trunk
£ 8.00
SIP Trunk / month
4000 FREE Minutes to UK 01, 02, 03 landline and UK mobile
Competitive Call Rates
Includes 9-5 Support

Get in touch