A VoIP gateway is a device or software that bridges traditional telephone systems (like PSTN or analog lines) with digital VoIP networks, enabling voice communication between them.
Here’s a more detailed explanation:
What it is:
A gateway converts voice signals between digital and analog formats, allowing businesses to use VoIP systems while still connecting to traditional phone networks.
How it works:
The gateway receives analog voice signals from a landline or PBX system, converts them into digital packets, and sends them over the internet using VoIP protocols. It can also convert incoming VoIP calls into analog format for legacy devices.
Benefits:
- Interoperability: Lets you retain existing phone infrastructure while migrating to VoIP.
- Cost-efficient: Avoids full replacement of old PBX systems.
- Flexible deployment: Supports hybrid communication setups (VoIP + PSTN).
Key components:
- FXO/FXS ports to connect analog lines and devices
- SIP protocol support for VoIP integration
- Digital signal processor (DSP) for real-time audio conversion
Why it’s beneficial:
Gateways help businesses transition to internet-based telephony without disrupting existing operations. They’re essential for phased VoIP rollouts or locations with partial VoIP readiness.