Well I understand why quantum should be at least equal to mtu size but letīs think in this if i have a dsl link and i want to give more quality to "one voip user" iīve already solved the dsl upload problem transfering the bottleneck to my shapping box. Should i change the quantum to a lower value for that class? any ideas or comments about this? Thanks in advance __________________________________________________ Do you Yahoo!? Yahoo! Shopping - Send Flowers for Valentine's Day http://shopping.yahoo.com