can't make outgoing call from analog to IP phone internally .as the analog phone is connected to IAD. even it can make outgoing calls to PSTN
1-I create log server using UCmaint [LMT-tools].
2-I found the IAD send the Number only two digits .
3-I modified the Digit map on the U1910 to be x and xx a XXX regarding the nature of internal number i want to call .
then the prolem is solved
check the calling and called number using UCmaint to know the nature of numbers .
check the Called number on the UCmaint curfully and do the analysis for all your number planes , and then edit the digit map