Recommended Server for Asterisk 13 deploying

Hi all ,
I’m anew client to Asterisk community ,i’m here for asking your help with my first deploying asterisk system .
i plan to install asterisk server 13 on Dell server or any other recommended server .
we will have less than 100 Phone register to voip system in different sites ,call will be g.729 codec ,
we want to install one T1 port card .

so advice us with recommended Hardware server and card model that will be comfortable to this server .

Thanks In Advance