I just finished a Cisco IPT Implementation in the HQ of one of our customers and studing the possibility of going through the other sites in 20 different cities in 4 different countries. In the HQ we have full blown CallManager. I am doing the design for the next site which has about 150 users/IP Phones. At the begining, I was thinking of a centrilized solution but now I am studing the possibility of using the distributed Call Processing by putting a CME and CUE in order to minimuze the bandwidth utilization (Voicemail, MOH etc). Curently, the maximum available bandwidth is a T1 and it's already at 70% of utilization. Please advice if there's a bether approch.