SIP Trunking

The UK PSTN and ISDN network is scheduled to switch off in January 2027, and stop sell is already in force everywhere — so copper lines cannot be bought, moved or modified now, well before the lines themselves stop. Any business still running analogue or ISDN needs to move to IP voice before then, and the ones that leave it late get fewer options rather than more.

SIP trunks work with most IP-enabled PBX systems, and keeping the system you already own is usually the whole point of choosing SIP. If yours is not IP-enabled, a gateway sometimes bridges it and sometimes the honest answer is that the system has reached the end of its life — we will tell you which before you commit to anything rather than after.

Yes. Full number porting is included across 01, 02, 03 and 08 ranges, so nothing on your signage, vehicles, stationery or listings becomes wrong. The number belongs to you rather than to your current supplier, which is the part most businesses are surprised by — believing otherwise is the commonest reason firms stay somewhere they are unhappy.

One channel carries one concurrent call, so the number you need is driven by how many calls you take at once, not by how many staff you have. Channels can be added or removed without installing physical lines, so you can start close and adjust.

Voicesafe. Toll fraud works by getting into a phone system out of hours and dialling premium or international numbers, and the bill lands on you. Voicesafe watches call patterns and caps the damage, and it sits across SCG voice services rather than being a bolt-on you have to remember to buy.

Anyone with an IP-capable PBX they want to keep, and particularly businesses with seasonal call peaks, multiple sites or fast headcount growth, because channels flex up and down without an engineer visit. It suits a business that invested in a system recently far better than one whose PBX is already near the end of its life, where replacing it outright is the better answer.