Proprietary telephones (PTs) and Direct Station Selection (DSS) Consoles feature a wide variety of feature buttons and Line Access buttons, explained below.
Note that certain models do not have certain buttons.
For a description of the buttons found on each PT or DSS Console, please refer to the Operating Instructions for each PT or DSS Console.

[PT]

Button

Function

Navigator Key,
Volume Key

Used to adjust the volume of the speaker, handset and headset, and the display contrast, or to select desired items.

PROGRAM

Used to enter and exit programming mode.

FLASH/RECALL

Used to disconnect the current call and make another call without hanging up (Flash/Recall mode), or to send an EFA (External Feature Access) signal to the telephone company or host PBX to access external features (EFA mode).

HOLD

Used to place a call on hold.

SP-PHONE (Speakerphone)

Used to select handset or hands-free operation.

MONITOR

Used to select hands-free dialling and monitor operation.

MESSAGE

Used to leave a message waiting indication, call back the party who left a message waiting indication, or play back voice messages. This button is provided with an LED (Light Emitting Diode), except for on KX-T7700 series telephones. With KX-T7700 series telephones, the Message/Ringer Lamp is lit when a message waiting indication is left at an extension.

REDIAL

Used to redial the last number dialled.

TRANSFER

Used to transfer a call to another party.

Flexible CO

Used to access an outside (CO) line (or outside (CO) line group) when making or receiving a call. The button's preprogrammed Outside (CO) Line Access method determines which line is selected (Default: Single-CO [S-CO]). Can also be customised as a feature button.

INTERCOM

Used to make or receive intercom calls.

AUTO ANS (Auto Answer)/MUTE

Used to answer an intercom call automatically in hands-free mode, or to mute the built-in microphone during a conversation.

VOICE CALL

Used to answer an intercom call automatically.

AUTO DIAL/STORE

Used for System Speed Dialling/Saved Number Redial, playing back personal/common BV outgoing messages (OGMs) used by the Built-in Voice Message (BV) feature, and storing programme changes.

CONF (Conference)

Used to establish a 3-party or 5-party conference call.

FWD/DND (Call Forwarding/Do Not Disturb)

Used to set the FWD or DND feature for the extension.

PAUSE

Used to insert a dialling pause in a stored number.

PF (Programmable Feature)

Used to access a preprogrammed feature (no default). Mostly used as a One-touch Dialling button.

[DSS Console]

Button

Usage

Flexible DSS

Used to call an extension with a one-touch operation. Each button is programmed to correspond to an extension. DSS buttons can also be customised as different feature buttons.

PF

Used to access a preprogrammed feature (no default). Mostly used as a One-touch Dialling button.

Flexible buttons are buttons whose functions can be customised through either system or personal programming. The following types of flexible buttons are found on proprietary telephones (PTs) and/or Direct Station Selection (DSS) Consoles:

a)	Flexible CO buttons
b)	Flexible DSS buttons
c)	Programmable Feature (PF) buttons
d)	Flexible MESSAGE button

[Button Usage]

Button

Function

Single-CO (S-CO)

Used to access a specified outside (CO) line for making or receiving calls (

1.5.3.3 Outside (CO) Line Access).

Group-CO (G-CO)

Used to access an idle outside (CO) line in a specified outside (CO) line group for making calls. Incoming calls from outside (CO) lines in the assigned outside (CO) line group arrive at this button (

1.5.3.3 Outside (CO) Line Access).

Other-CO (O-CO)

Used to access an idle outside (CO) line for making calls. Incoming calls from the assigned outside (CO) lines, which are not assigned to S-CO or G-CO buttons, arrive at this button (

1.5.3.3 Outside (CO) Line Access).

Direct Station Selection (DSS)

Used to call an extension with a one-touch operation (

1.5.1.1 Intercom Call).

One-touch Dialling

Used to call a preprogrammed party or access a feature with a one-touch operation (

1.6.1.2 One-touch Dialling).

Message

Used to leave a message waiting indication, call back the party who left the message waiting indication, or play back voice messages (

1.17.1 Message Waiting).

Message for another extension

Used to access voice messages stored for another extension (

1.17.1 Message Waiting).

FWD/DND (Call Forwarding/Do Not Disturb)

Used to set the FWD or DND feature for the extension (

1.3.1.1 Call Forwarding (FWD)/Do Not Disturb (DND)—OVERVIEW).

Save

Used to store a telephone number while in a conversation with an outside party or while hearing a busy tone, and then easily redial the number later (

1.6.1.4 Redial ).

Conference

Used to establish a 3-party or 5-party conference call (

1.13.1.2 Conference).

Caller ID Indication—Personal

Used to inform an extension user of calls logged in his or her personal area, store the information of an incoming call during a conversation, and view caller information while on-hook and then call back a caller (

1.16.2 Incoming Call Log).

Caller ID Selection—Personal

Used to display and cycle through the information of an incoming call during a conversation, while receiving a call, or while viewing caller information, display the number of logged calls while on-hook, and inform an extension user that the personal area call log is full (

1.16.2 Incoming Call Log).

Caller ID Indication—Common

Used to inform an extension user of calls logged in the common area, store the information of an incoming call during a conversation, and view caller information while on-hook and then call back a caller (

1.16.2 Incoming Call Log).

Caller ID Selection—Common

Used to display and cycle through the information of an incoming call during a conversation, while receiving a call, or while viewing caller information, display the number of logged calls while on-hook, and inform an extension user that the common area call log is full (

1.16.2 Incoming Call Log).

Log-in/Log-out

Used to switch between Log-in and Log-out status (

1.2.4 Log-in/Log-out).

Day

Used to change the time service mode to day mode (

2.2.3 Time Service).

Night

Used to change the time service mode to night mode (

2.2.3 Time Service).

Lunch

Used to change the time service mode to lunch mode (

2.2.3 Time Service).

Extension Lock

Used to remotely lock or unlock another extension (

2.2.4 Operator/Manager Features).

2-way Record

Used to record a conversation into the user's own mailbox (

1.19.1 Voice Mail APT Integration).

2-way Transfer

Used to record a conversation into the mailbox of a specified extension (

1.19.1 Voice Mail APT Integration).

Live Call Screening (LCS)

Used to listen while a caller is leaving a message in the user's voice mailbox and, if desired, intercept the call (

1.19.1 Voice Mail APT Integration).

LCS Cancel

Used to stop monitoring the user's own voice mailbox while a caller is leaving a message, or stop the alert tone heard in private mode while a caller is leaving a message (

1.19.1 Voice Mail APT Integration).

Voice Mail (VM) Transfer

Used to transfer a call to the mailbox of a specified extension (

1.19.1 Voice Mail APT Integration).

The LED (Light Emitting Diode) of the Message/Ringer Lamp and the following buttons (Line Status Buttons and Corresponding Extension Status Button) can indicate line status with a variety of light patterns.

Line Status Buttons: Single-CO (S-CO), Group-CO (G-CO), Other-CO (O-CO), INTERCOM

Corresponding Extension Status Button: Direct Station Selection (DSS)

1.

Light Pattern of the Message/Ringer Lamp

•	Incoming call from an outside (CO) line/another extension: Red flashing
•	Message(s) present (no incoming call): Red on
•	No messages present and no incoming call: Off

2.

Light Pattern of the Line Status Buttons

3.

Light Pattern of the Corresponding Extension Status Button

*

This setting can be changed through system programming (

DSS Lamp Mode [112]).

4.

Flashing Light Patterns

A display proprietary telephone (PT) can relay the following information to the user while making or receiving calls:

Display Item

Display Example

Condition

The extension number and name of the calling or called extension

123: Tom Smith

–

The status of the called extension

123: Busy

–

The name and number of the doorphone

Door Phone 1

–

The telephone number dialled

1234567890

–

The extension number and name of the calling extension after the call is forwarded

102:Mike

–

The received call information

The first line message can be either (a) or (b) at each extension through system programming (

Caller ID Log Priority [904]).

a)

Caller's name

ABC Company

b)

Caller's number

12345678

c)

Outside (CO) line number

Call on CO 1

Duration of the current outside (CO) line call

CO 1 0:01'15

–

•	Extension button confirmation A display PT user can confirm the button settings, such as the flexible CO button, by pressing the corresponding button while on-hook.
•	The Day, Night, Lunch, and Extension Lock buttons can only be assigned to flexible DSS buttons at an extension assigned as the operator or manager.

•	1.2.3 Direct Inward System Access (DISA) Ring
•	1.3.1 Call Forwarding (FWD)/Do Not Disturb (DND)
•	1.12.1 Call Hold
•	1.13.1.2 Conference

•	Display Contrast The display contrast can be adjusted with the Navigator key or the CONTRAST selector. This is available only for PTs.
•	Ringer Volume The volume of the ringer can be adjusted with the RINGER Volume selector.
•	Self-extension Number A display PT user can confirm his or her own jack number and extension number on the display.
•	Characters (name) or digits (number) exceeding the maximum length of the display are not displayed. Although in this case information may not be displayed properly, the received information is not altered. When the information displayed by pressing specific buttons (One-touch Dialling, REDIAL, Save) while on-hook exceeds 17 characters, the "`&`" mark will be shown on the right side of the display.