The following dial tones inform extension users about features activated on their extensions:

Type

Description

Tone 1

A normal dial tone is heard when none of the features listed for dial tones 2 through 5 have been set.

Tone 2

Heard when any of the following features is set.

•	Absent Message
•	Background Music (BGM) (for proprietary telephones [PTs] only)
•	Call Forwarding (FWD)
•	Call Pickup Deny
•	Data Line Security
•	Do Not Disturb (DND)
•	Extension Lock
•	Hot Line (for single line telephones [SLTs] only)
•	Message Waiting (for PTs only)
•	Remote Extension Lock
•	Timed Reminder

Tone 3

Heard when any of the following features is performed.

•	Account Code Entry
•	Answering a call from Timed Reminder
•	Going off-hook with an SLT that has messages waiting

Tone 4

Heard when going off-hook if new voice messages have been recorded (Built-in Voice Message [BV]).

Tone 5

Heard when going off-hook if the remaining voice message recording time is less than 5 minutes or if 125 voice messages have been recorded (Built-in Voice Message [BV]).

•	Dial Tone Type for ARS/Account Code Entry (Verify-Toll mode only) Through system programming, it is possible to select the dial tone type for the Automatic Route Selection (ARS)/Account Code Entry (Verify-Toll mode only) feature ( ARS Dial Tone [362]).

At the end of a feature operation, the PBX confirms the success of the operation by sending a confirmation tone to the extension user.

Type

Description

Tone 1

Sent when the setting is accepted, or sent when the Extension Lock feature is set or cancelled.

Tone 2

Sent when the new setting is identical to the previous one, or sent when certain features are successfully performed or accessed (e.g., Call Hold, Automatic Callback Busy).

Tone 3

Sent before a conversation is established when accessing the following features:

•	Call Pickup
•	Call Hold Retrieve with the Feature Number
•	Conference
•	Paging/Paging Answer