If I was your Toshiba vendor I would certainly do some type of VOIP testing to check QOS. The problem with this is that most VOIP testing software is expensive or at least used to be. IXIA has Chariot testing which emulates VOIP traffic between multiple sites. This has come in handy for us when we are emplimenting VOIP on an exiting LAN or WAN. We have been able to put providers in check when they say it isnt the network or the router is configured correctly. There are so many reasons for something not working correctly and only a handfull of fixes. This software has gotten me and my co workers out of sticky situations and really slammed AT&T's hand in the door so to speak.... smile