PBX Sip Settings

I have probably configured this completely wrong I had absolutely no clue what I was doing. If you see any changes that need to be made go ahead and post what needs to be done.

Trunks:

dtmfmode: auto

Audio Bypass: no

SIP Account:

Username: Phone Number

Password: Provided password by voipo for sip

Sip Server: sip.voipwelcome.com

Options:

Outbound Caller ID: Phone Number

Maxium Chanels: 1

Maxium Outbound Chanels: 1

Dial Rules: NO CLUE! I left blank

InBound Routing

No clue what these settings are so maybe you can fill them in?

SIP URI:

Thats it so far am I doing this right? Do I need to configure something in my pap2t?