Everything is possible but not all features are implemented in VoIPonCD by default. Nevertheless everything which can be done with Asterisk can be somewhat easier done with VoIPonCD. Callforwarding can be used at the telephone's side but also being implemented in the dialplan. I did not put in all features the base system is able to handle, just a small set of features to set up easily your first PBX.

It is very good if you know a linux shell, then you are able to do almost everything. You need an (maybe old) PC with at least 500 MHz and 128 MB RAM. Even older PCs are working for not too many telephones. As a helping direction I can say that I had about 500 registered users and 200 simultaneous calls with a 1000 MHz Dual-Pentium III with 1 GB RAM, so for a home PBX you may be happy with your old 300 MHz PC with 64 MB RAM, but I never tried it. Use a harddisk with at least 2 GB space and be aware that everything will get lost on this harddisk when installing VoIPonCD! If you just have a virtual server, try the script shown at http://forum.voiponcd.com.

Rolf