Specifications

INTERCOM CALL PROGRESS TONES
(Heard through handset receiver or over monitor speaker)
Dial Tone
3ase Level Tone
7
E
F
C
L
Continuous on
-I
Called station ring-back 560 msec. tone burst
sounded twice every 4 sec.
Called station busy
on outside line
Base level
program entry
‘rogramming
xxfirmation
70 msec. tone burst
sounded once
System speed dial
entry confirmation
Memory dial intercom,
line, group and/or recall
selection confirmed
All-call page
selection confirmed
PA station port
selection confirmed