Voice
Business telephony over IP — hosted VoIP, SIP trunking, number porting and call routing, as the traditional phone network is switched off.
01Overview
The UK's analogue and ISDN phone network (PSTN) is being retired, so every business is moving voice onto IP. That migration is also a chance to gain features that legacy lines never had — but it changes what the phone system depends on, and connectivity quality becomes part of the voice decision.
- delivery
- Hosted VoIP (cloud PBX) · SIP trunking to on-site or virtual PBX
- numbers
- Port existing geographic & non-geographic numbers · provision new DDIs & ranges
- routing
- Time-of-day & IVR menus · hunt groups · call queues · out-of-hours & failover routing
- features
- Voicemail-to-email · call recording · presence · softphone & mobile apps
- dependency
- Voice quality depends on the underlying connection — assessed as part of design
- porting lead time
- Single-number ports typically ~2 weeks · multi-line ports longer — subject to the losing provider
02What’s included
From order to ongoing support.
- 01
Migration plan
A porting and cutover plan mapped to your existing numbers, call flows and PSTN switch-off timeline.
- 02
Build & routing
Call routing, IVR menus, groups and out-of-hours behaviour built to match how the business actually answers calls.
- 03
Number porting
Managed porting of existing numbers with a coordinated cutover to avoid missed calls.
- 04
Handsets & apps
Provisioning of desk phones, softphones and mobile apps, with support after go-live.
03How to choose
The questions that actually decide it.
Hosted VoIP or SIP trunks?
Hosted VoIP replaces the phone system entirely in the cloud — least on-site kit. SIP trunks keep an existing PBX you're not ready to retire while still moving off the old lines.
How do calls need to route?
Map real call flows first — reception, hunt groups, IVR, out-of-hours. Routing complexity, not handset count, is what makes a voice build simple or involved.
Is the connection ready for voice?
Voice is sensitive to jitter and packet loss. On a marginal connection, prioritisation or an upgrade is part of the voice project, not a separate one.
Do you need call recording?
Some sectors are obliged to record and retain calls. If that applies, it shapes the platform choice and storage from day one.
04FAQ
Straight answers.
What is the PSTN switch-off and does it affect us?
Can we keep our existing phone numbers?
Will VoIP call quality be as good as our old lines?
What happens to calls if our internet goes down?
Do staff need desk phones?
Get voice scoped.
Tell us your sites and what you're trying to fix. We'll come back with the right mix and clear next steps.