i would think that 96 ports are more than enough for 400 users, i've seen systems with 1000+ users and only 96 ports and only few complaints on users not being able to access VM
did you performed a capacity planning for this??
because it's expected that if all users try to get their VM at same time they will get busy 3/4 of them
the recommendation is to leave 20-25% of VM ports for MWI only but if the port usage is reaching almost 100% then you can enable the incoming calls on all ports
what version and server you have??? some versions allow up to 144 ports now
HTH
java
if this helps, please rate
HTH
java
if this helps, please rate