The Voice Processing Systems (VPS) Interface is a protocol based on Dual-Tone Multi-Frequency (DTMF) signaling, designed to interface with external voice-processing systems, such as voice mail and unified messaging applications.
features
- Analog two-wire ports
- Two services are provided:
- Automated attendant services
- Voice mail management
- Call progress based on:
- Signal detection
- Tone management
- MF signaling
benefits
- Very simple protocol with basic and extended features