Giving voice priority over data won't make a whit of difference if your T1's are saturated. You need to do some traffic shaping to ensure that doesn't happen. A T1 is not that big a pipe anymore (as far as data goes- it's plenty big for many voice channels on its own) and a single desktop PC user at one of your remote sites can easily saturate a T1.

ESI's "Network Assessment" will point you in the right direction. It's available to all IP-certified ESI resellers and is well priced.


Brian Dunne
ETC Telecom
www.etctele.com