We are already using 3rd party hosted VOIP PBX system that limit us to their standards.
We would like to host our own PBX system by adding new extensions with voice mail, call recording, conference bridge, follow me and call monitor. Video conf. might also be required in the near future.
We need the contractor to do the design and also do the calculation to how many VOIP lines and DIDs are required.
The PBX will be running on Ubuntu server.
Skills: pbx, voip, design, video