We are using the auxiliary interface of a 2610 and 1720 to link each other.
Then from the 1720 we are using a serial interface WIC 1T to connect to an Automatic tleller Machine through a modem connection. The modem connection is asynchronous.
In normal conditions the ATM (automatic teller machine) functions O.K.
When we test the RDSI connection from the 2610 we observe that the ATM receives the calls from the host, but using the debug x25 command appears the messages: congestion and the ATM does not respond.
We have to reset the SVC X25 interface with the command: clear x25 serial 0 so the ATM can accept the call and XOT protocol is going to be UP.