Specifications

Intercom Call Progress Tones
(As Heard Through Handset Receiver Or Over Monltor Speaker)
Dial Tone
Base Level Tone
Continuous on
-I
Called station ring-back
560 msec. tone burst
sounded twice every 4 sec.
Called station busy
on outside line
I
I
Base level
program entry
Programming
xnfirmation
70 msec. tone burst
soundedonce
System speed dial
entry cqnfirmation
Memory dial intercom,
line, group and/or recall
selection confirmed
All-call page
selection confirmed
PA station port
selecti,on confirmed