Comparison
SIP vs VoIP — what's the difference?
These get mixed up constantly. VoIP is the broad technology for making calls over the internet. SIP is the protocol that actually sets up and manages those calls — and SIP trunking is how a business connects its existing PBX to the network. SIP is part of VoIP, not a rival to it.
| VoIP | SIP | |
|---|---|---|
| What it is | A broad term: any voice call carried over the internet | A specific protocol that sets up and manages those calls |
| Scope | The overall concept / category | The signalling standard most VoIP actually runs on |
| Relationship | The umbrella | A core part of VoIP — not a competing technology |
| Common business form | Hosted phone systems, calling apps, softphones | SIP trunking — connecting your existing PBX to the network |
| Connects an existing PBX | Depends on the service | Yes — that's exactly what a SIP trunk does |
| Scalability | Varies by provider | Add or remove channels (simultaneous calls) on demand |
| Best for | Businesses wanting a full cloud phone service | Businesses keeping a PBX but modernising the lines |
What this means for your business
You rarely choose "SIP or VoIP" — you choose how you want VoIP delivered. If you want a full cloud phone service with no hardware, that's Cloud PBX. If you already own a PBX and just want to modernise the lines and cut costs, that's a SIP trunk.
WOCOM provides both over its own OUR-licensed carrier network — so whether you need cloud phones or SIP trunking for an existing system, it's one Jamaican provider end to end. See also our SIP Trunk vs PRI comparison.
FAQs
SIP vs VoIP — FAQs
Cloud phones or SIP trunking — WOCOM does both
One OUR-licensed Jamaican carrier for however you want VoIP delivered.