I have (23) 1760v's already in use, which i purchased from a partner, they configured them for me, then i puchased (2) more that were sent to me directly from distribution. The issue is that both of these will not work, i have configured them correctly, copying config from a working location still nothing. Took known good vwic, mft-t1 cards and put in unit, still can't get out. Took VWIC card from non-working 1760, and it works in know working location. I have a case # already going, but while i'm waiting for call back #7, i figured i'd ask... Is there anything that i'm missing as far as INITIAL set-up, maybe a magical switch i'm missing????