I have 2 voip-providor accounts, only one extension needs to use the 2nd account. However when he makes a call the number of the main voip account is displayed. But he supposed to have a different number. How can i tell what number he should send along so i get the proper number in my mobile display when he calls me? I set the outbound caller id field to the correct number but somehow it doesnt work. Also i made a rule telling extension 740 is only allowed to dial through the specific voip providor, but it seems to ignore that. Please help.