Aterisk and Vicidial call centre structure

I want to establish a small call centre, which provide IVR/ Recording of calls. I want to use Asterisk and Vicidial softwares for my call centre. I have four telephone lines that will be used and no internet for this. Only LAN will be used for this.
anyone who can guide me for the solution.

I want to know
How phone lines will be connected to Asterisk server?
Do any VoIP soft phone will be used?
Any special hardware used in this scenario