Integrate Voice Chat for Sales Agents

I'm looking for a developer to add voice chat functionality to web-based sales agents I've created for my sales team.

Key Requirements:
- Voice Chat: Implement continuous conversation voice chat feature.
- Integration: Seamlessly integrate with existing web platform.

Ideal Skills:
- Experience with web-based voice chat integration.
- Strong background in real-time communication technologies.
- Familiarity with developing for sales or customer interaction tools.

Please share relevant experience and approach.