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Phone systems and SIP trunks

PBX phone systems

A PBX or Public Branch Exchange Telephone System is what many people would refer to as a ‘traditional’ phone system. Unlike a ‘hosted’ system where all of the call routing, etc, is ‘in the cloud’ and delivered via the internet, a PBX is located in your office with telephone lines and extensions wired to it.

Although the industry is now very much focused on ‘hosted’ cloud solutions, there are some cases where a PBX is the preferred option. For example large call centres with hundreds of extensions, remote rural locations where the broadband isn’t fast enough for VOIP, or a hotel where direct software intregration is needed. In these cases we can provide an on-site system.



VOIP or Voice Over Internet Protocol is a term that covers a number of different applications. Essentially VOIP is the use of the internet to transport your voice data between diffrent locations. This can result in a dramatic cost reduction, tremendous flexibility, and improved productivity.

You may be moving offices and not be able to retain your telephone number due to the distance you are moving. You can with a VOIP solution from Halo Digital. We can port your BT numbers into our system so you can take them wherever you like.

SIP trunking

SIP trunks are telephone line trunks delivered over IP networks using the SIP protocol. By using this standard protocol, telecom service (VOIP) providers connect one or more channels to your PBX. Phone numbers and DIDs are linked to the SIP trunk. The benefits range from significantly lower call charges and monthly line rental to flexibility and our excellent customer service.