Tone
The Tone LED is on for the duration of a transmitted DTMF digit or other
generated tone. It will also be on when call progress tones are detected on
the phone line. It will flash once for each received DTMF digit.
Hook
The Hook LED comes on whenever the B1290 goes off hook, to dial or an
-
swer the telephone. It will flash if a phone port error is detected (no dial
tone or other expected call progress signal). The hook LED will also flash
during pulse dialing.
Run
The Run LED will be on steady when the B1290 is operatingcorrectly. This
LED will flash if an error condition is present.
Ring
When ringing is detected on the telephone line, the Ring LED illuminates.
Since answering the telephone is a low priority task to the B1290, it may ig-
noretheringingif itisprocessingothertasks(e.g.speakingontheradio).
PTT
The PTT LED will light when the B1290 generates a push-to-talk signal to
the radio.
24 Front Panel
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