You can configure the monitoring timers in the branch TYPE=MFCVAR, OPT=TIME. To monitor from the signal start of the current digit to the signal start of the next digit, you must set the timers NXTSIG = 0 and RMVSIG > 0. If you set both values to 0, there is no monitoring. If you set both timers to a value > 0, NXTSIG waits for the next signal and RMVSIG waits until the remote exchange overrides the signal. Use STADIAL for applying the first signal from the remote central office.

If an MFC monitoring timer responds, the system generates an MFC-MONITORING message and ends the signal exchange with IMP (corresponding pulse signal from the MFC table TYPE=MFCVAR,OPT=MISC).