Refer to the exhibit.
What is the output displayed on the IP phone when the incoming calling number is 00492288224002 and has a TON = unknown?
A. +49122288224002
B. +492288224002
C. 00492288224002
D. +49128822400
E. 491288224002
What is the output displayed on the IP phone when the incoming calling number is 00492288224002 and has a TON = unknown?
By the picture you can see that If TON=unknown, it will not apply any prefix, striping and CSS’s DDI so, the number is not modified
Can anyone explain this answer, please.