The following table shows general Service Observing indicators that observers receive.
Condition |
Button lamp |
Tone |
Not active |
Dark |
None |
Denied activation |
Broken flutter |
Intercept/busy/reorder |
Activated |
Steady/Winking |
Confirmation tone followed by silence or connection to call. |
Observing (listen only) |
Steady |
Hear call |
Observing (listen/talk) |
Winking |
Hear/talk on call |
In wait state |
Flash |
None |
Denied observing |
Flash (wait state) |
Silence/ineligible tone followed by silence |
