Northern Telecom DMS-100 Series Technical Description, Installation, Operation And Maintenance Instructions page 13

PRACTICE 297-2011-202
Page 3-6
Automatic Line (AUL)
Busy Override (EBO)
Call Back Queuing (CBQ)
Call Forward (CFW)
Call Park (PRK)
Call Pickup (CPU)
Call Waiting (CWT)
Directed Call Park (DCP)
Directory Numbers (DN)
Group Intercom (GIC)
Individual Business Line
Intercom (ICM)
Make Set Busy (MSB)
Malicious Call Hold (MCH)
Message Waiting (MWT)
Multiple Appearance Directory Numbers (MADN)
Privacy Release (PRL)
Query Busy Set (QBS)
Ring Again (RAG)
Set Busy Indicator (SBI)
Speed Calling (SCS, SCL, or SCI)
3-Way Calling/Call Transfer (TWC/CXR)
6-Port Conference (CFN)
3.21 Local Tones. A locally generated buzzer (500 Hz) tone is
utilized for call waiting and off-hook alerting. All other telephony tones
are provided by the switching equipment from a Tone Card.
3.22 Tone Characteristics. The various tones heard on the
M5112 Business Set are defined as follows:
TONE
Ringing
Busy
Call Waiting
Confirmation
Dial
CHARACTERISTIC
Interrupted warble tone, typically 2
seconds ON, 4 seconds OFF
Interrupted tone, 1 second ON, 1 second
OFF
Short burst of buzzer tone (500 Hz), 10
second intervals
Three short bursts of tone, not repeated
(informs user that feature requested has
been implemented. This tone is present
only when the feature access code is
dialed)