Typically this is a problem with analog trunks. We have a pri at our ofc on our N*, and have no trbl such as this. My question is, what do you have your I/F levels set at in hardware? I have our's set to ISDN, but you may want to try a different setting and see which has a effect on the conf calls. Not necessarily on a pri, but I have seen changing this setting on a t-1 make some difference. Hope this helps!!!
