Issue
The keypad displays Queue Full.
Solution
The message queue in the RF modem is full and no messages will get out to the radio network.
Need to check the RF coverage of the unit and check for RF noisy environment. Messages will clear when there is appropriate RF coverage.
Part numbers DS7400X, DS7400, DS7400Xi, DS7400XIVER2, DS7400XIVER3+, DS7400XIVER4, ARDIS