GrandStream IP PBX Training

I need comprehensive, live online training on GrandStream IP PBX, WebRTC, and APIs.

Key Areas:
- WebRTC: Integration with GrandStream
- APIs: Usage, development, security measures
- System setup, troubleshooting, and advanced features

Ideal Skills:
- Expertise in GrandStream IP PBX
- Strong knowledge of WebRTC and APIs
- Experience in providing live training sessions

Looking for an engaging and interactive training experience.