Communications
SIP trunks that make your existing PBX cheaper.
Keep your phone system. Replace expensive legacy lines with SIP over your bandwidth.
What you get
- Number porting with geographic stability — your numbers stay yours
- Concurrent-call sizing done with you, not sold at you
- Burstable capacity for the busy-season spike
- Runs over our fibre and wireless with end-to-end quality of service
Why now
Legacy ISDN and analogue lines are a dead end. SIP trunking is the like-for-like replacement that cuts line rental and makes your PBX future-proof — and when you are ready, the same trunks move onto NexysPBX.
Ready to simplify?
Book a free 30-minute consultation — we'll map your connectivity and comms, and tell you honestly whether we're the right fit.
Frequently asked questions
Will SIP work with my existing PBX?
Almost certainly — if it supports SIP, yes. We will confirm your make and model during the consultation.
How many concurrent calls do I need?
Rule of thumb: one per 3–4 staff for typical offices. We size it properly from your call data before quoting.