Hello again and thanks for the previous help. Currently I am trying to connect a Cisco 2811 router with Call Manager express through a t1 wic card into an Opt 11 TMDI card. The problem I have now is when trying to make a phone call through the PBX. I get an error code err404 (no default tree exists. I can make a phone call from the Cisco to the PBX. This PBX just had it's data base reset and I'm trying to rebuild all it's previous paths. Does anyone know what is generating it's error code?