1.7.2
System Ringing Patterns
Ring Type
Ring Cadence
CO/PBX Line Ring
Host system ring cadence
Intercom Tone Signaling
Two 150 msec. tone bursts every four seconds
Voice Signaling alert
One 215 msec. tone burst
Timed hold recall at station that put call on hold
Three 150 msec. tone bursts at the end of each timeout
period
Call back alert
One 80 msec. tone burst followed by three 150 msec. tone
bursts and one 80 msec. tone burst
Queue Enabled
Call forward alert
One 80 msec. tone burst
Transfer ringing
Two 1.1 sec tone busts every four seconds
Tone Type
Tone Cadence
Dial Tone
Continuous on
Called station ring-back
One sec. on and three sec. off
Base level program entry
80 msec. tone burst sounded once
Error tone—incorrect entry
530 msec. tone burst sounded three times
All-call and zone paging notification tone
80 msec. tone burst followed by 280 msec. tone
Busy tone
530 msec. tones sounded continuously
Override feature not allowed
Night transfer feature not allowed
Call waiting tone
Three 80 msec. tone bursts sounded once
Called station in do-not-disturb mode
140 msec. tone burst sounded twice every 1.5 sec.
Call-back busy feature on
260 msec. tone burst sounded once
System is awaiting memory dial number or key mapping
entry after location is specified
80 msec. tone burst sounded continuously
Override feature on warning tone
Six 100 msec. tone bursts sounded for 1.5 secs.
SOHVA tone
DISD ringback tone
Dual 440/480 Hz tone sounded 1 sec. on/1 sec. off
DISD dial tone
381 Hz tone sounded continuously
DISD confirmation tone
Two 125 sec. bursts of 381 Hz tone sounded once
DISD busy/error tone
Three 500 msec. bursts of 381 Hz tone sounded once
IMI66–132
DSU II Digital Telephone System
1–26 Introducing The DSU II Digital Telephone System
Содержание DSU II
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