I have opt 11 with 3.0..I have 43 ip hones on there all ready.They got some more and i can not get them going for the life of me. I am thinking there must be a firware issue.When i program up the phone with all the config it says loading then comes back with unable to reach sever. So i then took a working one out of service and changed tn"s and it works on the old phone new tn but not the new.Went to nortels site and have no idea which firware to download ANY.....Help Would be accepted THANKS. Just-A -tech