SIP Trunk
Connect your IP PBX to the public network, your branch offices, and the platforms your team uses.
- IP PBX
- Configurable concurrent channels
- Enterprise numbering
TELEPHONY
Your company's voice, connected
A SIP trunk links your IP phone system or communications platform with the public telephone network. It lets you organize calls, branch offices, and distributed equipment from an IP architecture built to grow with your business.
- IP PBX / IP-PBX
- Configurable concurrent channels
- Softphone and platform integration
- Distributed offices and equipment
What do we mean by SIP Trunk?
A SIP trunk connects your PBX or communications platform to the public network over the internet. It is the link that lets you organize calls, channels, and destinations within an IP voice architecture.
Your phone system, connected to the internet
A SIP trunk replaces conventional physical trunks and cabling with a direct digital connection between your IP PBX and the public telephone network.
All voice traffic runs QoS-prioritized over your data link, guaranteeing availability and corporate audio quality without relying on analog lines.
One trunk, your entire organization connected
A single SIP hub centralizes inbound and outbound communications for your headquarters, branch offices, and remote staff, with no per-building trunk contracts.
This simplifies administration, unifies your corporate numbering plan, and makes scaling painless when you open new locations.
Scalability, integration, and business continuity
A SIP trunk enables concurrent voice channels based on your real demand, integrating transparently with your phone systems and management tools.
With iWinds proactive support and monitoring, your voice infrastructure stays stable, auditable, and ready to grow with your operation.
The difference between SIP Trunk and VoIP
| VoIP | SIP Trunk | |
|---|---|---|
| Service type | Technology for transmitting voice over IP networks. | Service link that connects your PBX to the public network. |
| Infrastructure | IP network plus compatible devices or software. | Internet, IP PBX, and a SIP provider. |
| Channel scaling | Limited by fixed trunks or hardware. | Channels configurable on demand. |
| IP PBX integration | Requires proprietary hardware. | Works with IP PBX, softphones, and platforms. |
| Enterprise numbering | Tied to the physical link. | Numbers independent of the connection point. |
| Multi-site | Requires one link per location. | Centralizes branch offices on a single trunk. |
| Expansion | Needs a new circuit or trunk. | Adjusted by configuration, no physical work. |
| Business continuity | Single physical point of failure. | IP-based failover and alternative routing. |
Let's talk about the voice architecture you need
Tell us how your teams and branch offices communicate today. We analyze the scenario and help you define the right integration.