Fix VitalPBX 2-Way Audio

I need help resolving issues with my VitalPBX connection. Specifically, I'm experiencing problems with two-way audio and a non-functional dial pad.

Key requirements:
- Diagnose and resolve two-way audio issues
- Ensure dial pad functionality
- Verify and correct any misconfigurations

Ideal Skills and Experience:
- Experience with VitalPBX
- Strong understanding of VoIP systems
- Network configuration expertise
- Problem-solving skills

Please share your relevant experience and approach.