Hi,
After carefully reviewing your request, I am ready to help you with Technical Support because I have 15 years experience in system administration and programming.
I would like propose partnership with our company Tangram for your project. I lead a team of developers, designers and system administrators, so we'll be able to help you with administration.
As I see your project exactly what we configured to launch our corporate PBX.
We used Asterisk and WebRTC to setup PBX for our group of companies "Tangram" (it is four companies in four different countries. see more information about Group of companies "Tangram" below in P.S.)
During setup of PBX we implemented different features e.g. such as IVR menu etc.
We have strong team Senior System Administrators (8 specialists) with good experience in Asterisk and Linux servers because Managed Services is one of our major area of expertise. We provide a full range of Managed Networking Services, including System Administration and Technical Support of remote Linux and Windows servers executed by our team of experts.
I'll be happy to interview with you to review your needs and assets.
Looking forward to your response and wish you a great day ahead.
Best regards, Alex.