Here is the deal: I have two routers 2800 which are connected with ISDN PRI. The First router is under my administration and in this case it acts as providers router. The other router on other side of PRI is business customer's router which has CME installed and one FXS port with fax attached to it. The outbound fax can be sent and this part works well. The problem is with receiving fax which doesn't work. (The call is immediatelly released). Other strange thing I noticed is if I retry the inbound call immediatelly after the first attempt was rejected, I get the fax signal (which was't the case the first time)!! Please help me with any suggestions. Is it problem of my router (provider) or customer's (CME)?