Residential VoIP Setup with Conference Calling for ASIA only

I need an experienced VoIP provider to set up a residential VoIP service. The service must support conference calling and be compatible with Android devices.

Key Requirements:
- Implement a robust VoIP service
- Enable conference calling feature
- Ensure compatibility with Android platforms
- Provide an open CLI route for easy management

Ideal Skills and Experience:
- Expertise in VoIP technologies and protocols
- Experience with server setup and configuration
- Familiarity with Android compatibility issues and solutions
- Strong command of CLI for VoIP management

Please provide relevant experience in your bids.