Sip dial out..fxo port answers..then nothing

What configuration am I missing?

If I dial out on hardphone I get

Called g2/5837117
 – Zap/3-1 answered Zap/1-1
 – Native bridging Zap/1-1 and Zap/3-1
and call completes ok

If I call out on sip phone I get

Called g2/5837117
 – Zap/3-1 answered SIP/1000-083fd080

and thats it, it just stops there…what does somebody need to see rather that posting all files first.

thanks