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SIP Trunks

A cost effective alternative to ISDN that provides flexibility and continuity for your business SIP trunking is the fastest growing telephony service. It connects your site directly into the network via an IP connection to carry and terminate your inbound and outbound voice calls across the public telephone network.  Our solution provides a highly flexible alternative to ISDN and is designed to work successfully with all the leading IP PBX brands in the UK market, giving you peace of mind in knowing that your PBX hardware works with the network service. Compared to ISDN, SIP trunks are cheaper on a per channel basis, more flexible in terms of what telephone numbers you can have and where you can have them, are quicker to install and offers a very robust business continuity service that ensures your business never loses any calls. Our service can support connections ranging from two channels for businesses with small PBXs to no limit on the number of channels that can be supported for large enterprises and contact centres.

The benefits of SIP trunking

Flexibility with your phone numbers

Allows you to move office and keep the same geographic number without any ongoing call forwarding costs and costs associated with new company stationery.

Microsoft Lync integration

SIP trunks can be connected directly to Microsoft Lync, enabling your business to make external calls from the platform.

Save money

IP connectivity costs less than ISDN with lower call costs, free internal calls between extensions and offices (including international calls) 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.

Line rationalisation

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

Business continuity

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


SIP trunking provides a phone service that will cope with any situation and give you 100% up time on your telephony. Whether you need to keep your business running without expensive call forwarding costs in a disaster or emergency, or you need to load balance your calls between sites during peak hours, SIP trunking delivers.


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