A quality service managing your business calls and lines, cost-effective and resilient.

IT & Telecommunications Solutions



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Fixed Line Services


What is SIP?

SIP is rapidly becoming the telecoms protocol of choice for phone calls on data networks.

SIP, (Session Initiation Protocol), is the technology used for establishing a voice communication session on a data network (for example over the Internet). A SIP “session” might be a regular VoIP phone call between two participants or a multi-party conference call.

What Is SIP Trunking?

A SIP Trunk provides the same service you will receive from a traditional analog phone line. The difference is, instead of being a physical wire, a SIP Trunk is a “virtual” phone line which is provided by a SIP trunk.

Why Convert to SIP Trunking?

With SIP trunks there are no physical lines that need to be maintained and because of the lower price structure of VoIP, a SIP Trunk is considerably less expensive than ISDN.

Depending upon the types of calls, and quantity of calls you are making, SIP Trunking can save you up to 50% and more on your monthly bill.

Choosing SIP will significantly improve your business communications’ efficiency;


How Many SIP Trunks Do You Need?

The number of SIP Trunks is determined by a few factors.

1) Firstly decide how many concurrent calls does your business need? As a typical rule of thumb, you’ll need approximately one SIP trunk for each 2-3 users.

2) Your Internet connection is an important consideration. SIP Trunks do consume bandwidth. Depending upon the quantity of phone calls and need for data bandwidth, we recommend.

that you have either FTTC or GEA . The IntraLAN team can advise on the best connectivity for your situation.

How Much Will SIP Trunking Cost Me?

Please contact our sales team today to find out how you can benefit from SIP and the reduced cost as an alternative to ISDN.

Download our SIP Brochure for further information

Call Packages


Read what our customers say

What a cracking job you have done, I hadn’t appreciated the extent of what you (IntraLAN) had achieved, how professional you are and how impressed we are with the “can do” and teamwork to still deliver in spite of some serious adversities

Nelson, CEO at Pabulam Catering Ltd, Fleet Hampshire

Thank you to you and the team for another year of superb IT support and advice

Tom Brown, IT Manager at Liberty Wines Ltd London SW4

We cannot praise highly enough everyone at IntraLAN, from Helpdesk Support to Account Managers, they really do greatly assist in the smooth running of our business which is heavily IT reliant

Simon Grimmond, Partners Wealth Management, London EC2

IntraLAN have provided regular, comprehensive progress updates and achieved deadlines in a timely fashion

David Briggs, General Manager at London Medical, London W1