Sip.conf or users.conf

Where exactly do I add to users.conf and sip.conf?
My setup is only SIP. At this point I have the phone lines setup on sip.conf as well as all the sip phones (users’ lines).

I am old school and I like breaking things down between the different files. I feel that sing each individual file gives your more options. At the end of the day it depends on what will help you better. If you want one central location then use users.conf. If you need the flexibility that the individual files offer then break it down.