This is this 1st option of the IVR
I can use dundi to call 212 from a phone no problem 
               
 ; To Register/Confirm/Questions about Training
                ;exten =>  1,1,Dial(SIP/212,15) ; Box in remote location
                ;IAX2,priv:${SECRET}@10.8.0.1/${NUMBER}
                ;exten => 1,1,Dial(IAX2/priv:[dundi]/212)
                exten => 1,1,Macro(dundi-lookup,212,10); if I use this no return (obviously)
                exten =>  1,2,Dial(SIP/122,15) ; home office numbers
                exten =>  1,3,Dial(SIP/132,15)
                exten =>  1,4,Voicemail(u211); if I use dial(sip/212) no auth but does dial the home office number and is able to leave voicemail for 211