VoIP & PBX Solution Required Immediately (Only bid if you have ready solution with demo)

I am in need of a state-of-the-art Wave-based VoIP & PBX application. The application must have essential features at minimum like call recording, IVR and conference calling, file sharing capabilities. However, if you can integrate additional features such as call routing, voicemail, and call analytics, that will give you an upper hand!

Ideal Skills and Experience:
- Significant experience in developing VoIP and PBX applications.
- Proficiency in Wave technology.
- Skilled in integrating advanced features into applications.

Please apply only if you are ready to provide an immediate solution. I am looking forward to working with a dedicated and talented professional! Please show demo with access so that we can check and tell you our modifications.

We have many projects so looking expert for multiple projects after this one.

Thank you!