International calling glossary
Clear definitions of terms you will encounter in international calling. No jargon, no fluff.
- VoIP — Voice over Internet Protocol
- WebRTC — Web Real-Time Communication
- Per-minute billing
- Calling prefix
- Destination prefix
- PSTN — Public Switched Telephone Network
- Calling card
- International calling
- Pay-as-you-go calling
- Caller ID
- DTMF — Dual-Tone Multi-Frequency