PBX System using Asterisk

Hi !!
I need to setup an PBX system using asterisk server. Please let me know do I need mandatory the hardware to setup PBX system.
Using this PBX system I need to call soft phone to any other service provider phone.

However please let me know if hardware required do I need service provider registration as well.
Please guide me I am new to this area.


Thanks in advance!

You can start with:
For outgoing calls - you will need outgoing provider, for incoming calls - also incoming provider who will lease you numbers and calls to that numbers will come to your Astersik.

Thanks you very much for your reply.

Great video tutorials can be found at www.asterikast.com

Episode 4 is the best to start with.