PBX questions


I am looking for an IP Telephony solution. I want to develop a solution in my office.

Actually, I haven’t a PBX solution. I pretend make this solution by I-PBX

The solution that I am looking for my office consists:
Implement calls by IP between offices to reduce the cost.
Implement softphone to receive call everywhere

Implement call counter and call timer by asterisk

        Implement voice messages

I pretend that all the calls pass by asterisk (local calls and IP calls).

I want to know, which cards I need to buy and are necessary to implement this solution?

If you have other information about configuration or manuals about your cards and how integrate it with asterisk I will appreciate it.

Thank you for your time and I’ll be waiting your answer

Please dont double post.

See the other topic you started for more help.