Motorola MCS 2000 User Manual page 182

Frequency
Control Channel
176
Enter the WAC AMSS frequency for Failsoft operation directly in MHz.
If the radio is set to Failsoft by Talkgroup, it will use these frequencies
to transmit and receive on. Failsoft by Talkgroup is NOT compatible with
WAC AMSS.
Enter the Control Channel frequency directly in MHz. Up to eight
frequencies may be specified with WAC AMSS enabled.