From time to time we'll have a user who cannot make or receive calls from their IP phone (i2050 or i2004) the call will be immediately disconnected. We'll see the error ERR008 8 0 0 5 72 0 0 26 72 0 0 26 pop up on the PBX (a different TN each time though). The only way to resolve this is to move the phone to a different TN. Also, the error continues to pop up randomly (even after moving the phone to a new TN) until we reset the TMDI card. Has anybody else ran into this issue? Is it a signaling server or TMDI card issue by chance?