Directs a call on a public CO line assigned as a Direct Inward Dialing (DID) line to a preprogrammed destination according to the call's DID number, which is based on the telephone number dialed by the caller. When a call reaches its destination via DID distribution, the DID name will be displayed on the proprietary telephone (PT), allowing extension users to easily see whom a call is directed to. Each DID number has a destination for each time mode.

DID distribution allows you to use your telephone numbers for specific purposes. For example, you can direct calls from customers' fax machines to your office fax machine automatically, or allow your overseas customers to be automatically connected to specific operators. Incoming calls with DID/DDI numbers that match extension numbers at this PBX will be sent to the corresponding extension. Incoming calls with DID/DDI numbers that match extensions at other PBXs or CO line access numbers will be sent to the corresponding TIE line or CO line.

[Method Flowchart]

[Programming Example: DID Table]

^*1:

→ 2.17.3 [10-3] DID Table —

DID Number

→ [451] DID Number

^*2:

→ 2.17.3 [10-3] DID Table —

DID Name

→ [452] DID Name

^*3:

→ 2.17.3 [10-3] DID Table —

CLI Ring for DID—Day, Lunch, Break, Night

^*4:

→ 2.17.3 [10-3] DID Table —

DID Destination—Day, Lunch, Break, Night

→ [453] DID Destination

In this example:

If the DID number is "123-4567":

The PBX looks for the DID number in the table and finds it in location 1.

The PBX checks the time mode.

In day mode: Calling Line Identification (CLI) distribution is enabled. The call is routed to its CLI destination, if assigned. If not assigned, the call is routed to the DID destination, extension 105, and "Sales" is displayed.

In lunch mode: CLI distribution is disabled. The call is routed to the DID destination, extension 100, and "Sales" is displayed.

Note
	Tenant numbers and VM trunk group numbers (not shown here) can also be programmed in the DID Table. The tenant number programmed here is used only to determine the Time Table used by each DID number; selecting tenant 3 means the DID number will use Time Table 3, for example. The VM trunk group number set here is used to determine the Incoming Call Service and greeting message used by the Voice Processing System (VPS) during the current time mode. (→ 1.19.4 Voice Mail DPT (Digital) Integration).

Directs an incoming public CO line call to a preprogrammed destination based on the CO line carrying the call. Each CO line has a destination for each time mode.

[Method Flowchart]

[Programming Example: DIL Table]

The table can be programmed for each CO line.

^*:

→ 2.17.2 [10-2] DIL Table & Port Settings—DIL—

DIL Destination—Day, Lunch, Break, Night

→ [450] DIL 1:1 Destination

In this example:

If a CO line call is received on CO line 01:

In day mode: Calling Line Identification (CLI) distribution is enabled. The call is routed to its CLI destination, if assigned. If not assigned, the call is routed to the Direct In Line (DIL) destination, extension 101.

In lunch mode: CLI distribution is disabled. The call is routed to the DIL destination, extension 100.

Note
	Tenant numbers and VM trunk group numbers (not shown here) can also be programmed in the DIL Table. The tenant number programmed here is used only to determine the Time Table used by each CO line; selecting tenant 3 means the CO line will use Time Table 3, for example. The VM trunk group number set here is used to determine the Incoming Call Service and greeting message used by the Voice Processing System (VPS) during the current time mode. (→ 1.19.4 Voice Mail DPT (Digital) Integration).

An outside caller can access specific PBX features as if the caller is an SLT extension user in the PBX, when the incoming call destination is a DISA floating extension number assigned to each DISA message. The caller can have direct access to features such as:

•	Placing an intercom call to an extension, operator or any floating extensions (e.g., modem for remote system administration, an external pager for TAFAS).
•	Calling an outside party via the PBX.
•	Operating some PBX remote features (e.g., FWD).

[Flowchart]

DISA Intercept Routing—No Dial

If the caller fails to dial any digits within a preprogrammed time period (DISA 1st Dial Time for Intercept) after hearing the outgoing message (OGM), one of the following can be selected through system programming:

a)	Disable: The call will be terminated.
b)	Operator: The call will be redirected to the operator.
c)	AA-0, AA-9: The call will be redirected to the destination assigned to that AA number.

→ 2.9.5 [2-3] Timers & Counters—DISA / Door / Reminder / U. Conf—

DISA—No Dial Intercept Timer
→ [211] DISA Intercept Time

→ 2.12.3 [5-3-1] Voice Message—DISA System—Option 1—

DISA Intercept—Intercept when No Dial after DISA answers

DISA Built-in Automated Attendant Number (DISA AA Service)

After listening to the outgoing message (OGM), the caller may dial a single digit (DISA AA number). The destination for each DISA AA number can be assigned for each message. It is also possible to assign other DISA floating extension numbers as the destination (Multistep DISA AA Service).
If the caller dials a second digit within a preprogrammed time period (DISA 2nd Dial Time for AA), the DISA AA service is not employed.

→ 2.12.4 [5-3-2] Voice Message—DISA Message—

1 Digit AA Destination (Extension Number)—Dial 0–9
→ 2.9.5 [2-3] Timers & Counters—DISA / Door / Reminder / U. Conf—

DISA—2nd Dial Timer for AA

Outgoing Message (OGM)

When a call arrives on a DISA line, a prerecorded DISA message will greet and guide the caller.
Any extension assigned as the manager can record outgoing messages (OGMs). (→ 1.12.2 OGM (Outgoing Message))

[Programming Example]

Outgoing Message (OGM) No.

Floating Extn. No.^*1

Automated Attendant No.^*2

Busy/DND Message No.^*3

501

100

301

200

103

202

101

102

400

104

205

502

^*1:

→ 2.12.4 [5-3-2] Voice Message—DISA Message—

Floating Extension Number
→ [730] Outgoing Message (OGM) Floating Extension Number

^*2:

→ 2.12.4 [5-3-2] Voice Message—DISA Message—

1 Digit AA Destination (Extension Number)—Dial 0–9

^*3:

→ 2.12.4 [5-3-2] Voice Message—DISA Message—

Busy / DND Message No.

DISA Security Mode and Available Features

If the DISA AA service is not employed, the caller may access the PBX features by entering the feature numbers. To prevent others from accessing the PBX features, it is possible to assign DISA security.

→ 2.12.3 [5-3-1] Voice Message—DISA System—

DISA Security—DISA Security Mode
→ [732] DISA Security Mode

The features available depend on the preprogrammed DISA security mode as follows:

Security Mode

Intercom Call

TIE Line Call

CO Line Call

Without PBX Code

With PBX Code

All Security

CO Line Security

No Security

Available

^*:

If CO line call is available, Account Code Entry (→ 1.1.2 Account Code Entry) is also available.

Note
	DISA AA service and Operator Call (→ 1.12.5 Operator Features) are available for any security mode.

Security Mode Override by Verification Code Entry
If the caller performs Verification Code Entry (→ 1.19.1 Verification Code Entry) while hearing a DISA message, the security mode can be temporarily changed to No Security mode.
Entry method:
Verification Code Entry feature number +

+ verification code + verification code PIN

After changing mode, the new mode remains in force for the duration of the call.

DISA Intercept Routing—Busy

If the first destination called by the outside party is busy, the call is redirected as follows:

a)	The call is redirected to the Intercept Routing—Busy destination assigned to the first destination.
b)	If an Intercept Routing—Busy destination is not assigned to the first destination and a prerecorded DISA Busy Message is assigned, the caller will hear the DISA Busy Message.
c)	If neither an intercept destination nor a DISA Busy Message is assigned, the caller will hear a busy tone.

→ 2.11.1 [4-1-1] Wired Extension—Extension Settings—Intercept Destination—

Intercept Destination—When Called Party is Busy

DISA Intercept Routing—DND

If the destination called by the outside party is in DND mode and Idle Extension Hunting is not available, one of the following can be selected through system programming:

a)	Busy Tone: The caller will hear a busy tone.
b)	Enable: DND will redirect the call to the preprogrammed destination on an extension basis.
c)	OGM: An outgoing message (OGM) will be sent to the caller. The message for DND mode can be assigned for each outgoing message (OGM) which has a DISA floating extension number.

→ 2.12.3 [5-3-1] Voice Message—DISA System—

DISA Intercept—Intercept when destination through DISA sets DND

DISA Intercept Routing—No Answer

If a destination is not available to answer a DISA call within a preprogrammed time period (DISA Intercept time) after the call is reached, the call will be redirected to the programmed destination by the Intercept feature.
If the intercept destination is not available to answer the call within a preprogrammed time period (DISA Disconnect Time after Intercept) after the DISA Intercept time expires, the call will be disconnected.

2.9.5 [2-3] Timers & Counters—DISA / Door / Reminder / U. Conf

→

DISA—Intercept Timer—Day, Lunch, Break, Night

→

DISA—Disconnect Timer after Intercept

→ 2.11.1 [4-1-1] Wired Extension—Extension Settings—Intercept Destination—

Intercept Destination—When called party does not answer—Day, Lunch, Break, Night
→ 2.11.10 [4-2-1] Portable Station—Extension Settings—Intercept Destination—

Intercept Destination—When called party does not answer—Day, Lunch, Break, Night

→ [604] Extension Intercept Destination

Walking COS Through DISA

If the caller performs Walking COS (extension number and PIN entry) while hearing a DISA message, the security mode can be temporarily changed to No Security mode (→ 1.20.1 Walking COS). After performing Walking COS, the following features are available, using the settings of the specified extension:

•	Intercom call
•	TIE line call
•	CO line call
•	Call Forwarding (FWD)/Do Not Disturb (DND) setting (→ 1.4.10 DND (Do Not Disturb), → 1.6.6 FWD (Call Forwarding))
•	Incoming Call Distribution Group Log-in/Log-out (→ 1.9.3 ICD Group Features—Log-in/Log-out)
•	Absent Message setting (→ 1.1.1 Absent Message)
•	Extension Dial Lock (→ 1.5.4 Extension Dial Lock)
•	Time Service Switching Mode (→ 1.17.5 Time Service)

DISA Automatic Walking COS

Registered outside destinations such as cellular phones can be automatically recognized as PBX extensions when calling through DISA. When the Caller ID of a received CO line call matches an entry in the System Speed Dialing Table, the calling telephone is given Walking COS authorization as assigned to the corresponding CLI destination extension. Therefore, the "CLI destination" setting in the System Speed Dialing Table is used here to specify the target extension that the calling telephone will be recognized as for Walking COS.

[Programming Example of DIL Table]

CO Line No.

CLI

DIL Destination

Day

Lunch

...

Day

Lunch

...

Disable

...

501 (DISA)

...

"CLI" must be set to Disable, to allow incoming calls to be received by DISA.

2.17.2 [10-2] DIL Table & Port Settings
→ DIL—

DIL Destination—Day, Lunch, Break, Night
→ CLI for DIL—

CLI Ring for DIL—Day, Lunch, Break, Night

[Programming Example of System Speed Dialing Table]

Location

Name

CO Line Access + Telephone Number

CLI Destination

000

J. Smith

912341115678

200

001

2.13.1 [6-1] System Speed Dial
→

CO Line Access Number + Telephone Number
→

CLI Destination

In this example, calls received on CO line 01 are routed to the DISA OGM with floating extension number 501. If the number of the received call (after modification according to the Caller ID table) is "1-234-111-5678", the call originator is recognized as extension 200, and the Walking COS feature is automatically activated.
System programming is required to enable this feature.

SMDR

The call information for DISA is recorded as the one of the DISA floating extension numbers. (→ 1.16.3 SMDR (Station Message Detail Recording))

WARNING
There is a risk that fraudulent telephone calls will be made using the CO-to-CO Line Call feature of DISA.
The cost of such calls will be billed to the owner/renter of the PBX.
To protect the PBX from this kind of fraudulent use, we strongly recommend:

a)	Enabling DISA security (CO Line Security or All Security).
b)	Keeping passwords (verification code PINs/extension PINs) secret.
c)	Selecting complex, random PINs that cannot be easily guessed.
d)	Changing PINs regularly.

•

Hardware Requirement:

An OPB card, and MSG4 card or ESVM4 card

•

DISA Delayed Answer Time
It is possible to set the Delayed Answer time so that the caller will hear a ringback tone within a preprogrammed time period first before hearing an outgoing message (OGM).

→ 2.9.5 [2-3] Timers & Counters—Dial / IRNA / Recall / Tone—

Recall—Hold Recall
→ [209] DISA Delayed Answer Time

•

Call Retry
While hearing a ringback, reorder, or busy tone, retrying the call is possible by pressing "

". System programming selects whether pressing "

" during a CO-to-CO line conversation returns to the DISA top menu or sends a DTMF tone.

•

DISA Mute Time
It is possible to set the Mute time until the outgoing message (OGM) plays and the PBX starts to receive the DTMF signaling after the caller reaches the DISA line.

→ 2.9.5 [2-3] Timers & Counters—DISA / Door / Reminder / U. Conf—

DISA—Mute & OGM Start Timer after answering

•

End of Call Detection
If a call through DISA is routed to a CO line, DISA can be used to detect the end of the call. This function can be disabled through system programming. If disabled, DISA is released when the CO-to-CO line connection is made.
2.12.3 [5-3-1] Voice Message—DISA System—Option 1
→

CO-CO with DISA—DISA to Public CO
→

CO-CO with DISA—DISA to Private Network
The following three types of tone detection can be enabled for each trunk group to disconnect a CO-to-CO line call via DISA.

–

Silence Detection

→ 2.10.1 [3-1-1] Trunk Group—TRG Settings—Tone Detection—

DISA Tone Detection—Silence
→ [475] DISA Silence Detection

–

Continuous Signal Detection

→ 2.10.1 [3-1-1] Trunk Group—TRG Settings—Tone Detection—

DISA Tone Detection—Continuous
→ [476] DISA Continuous Signal Detection

–

Cyclic Signal Detection

→ 2.10.1 [3-1-1] Trunk Group—TRG Settings—Tone Detection—

DISA Tone Detection—Cyclic
→ [477] DISA Cyclic Signal Detection

•

CO-to-CO Line Call Duration Limitation
For a call between two outside parties, even if end of call detection cannot be performed, the call can be disconnected by a system timer. (→ 1.3.16 CO Line Call Limitation) If the timer expires, the line will be disconnected unless the originating caller extends the time by sending any DTMF signaling. The caller can prolong the call duration within the preprogrammed time period and preprogrammed number of times.

2.9.5 [2-3] Timers & Counters—DISA / Door / Reminder / U. Conf
→

DISA—CO-to-CO Call Prolong Counter
→

DISA—CO-to-CO Call Prolong Time
→ [210] DISA CO-to-CO Line Call Prolong Time

•

Automatic DISA Activation
DISA can be set through system programming to automatically activate for the following types of CO-to-CO line calls, to enable detection of the end of the call.

–	When a CO line call is forwarded to another CO line
–	When a CO line call is transferred to another CO line
–	When a CO line call to an incoming call distribution group is answered by an outside destination member

2.12.3 [5-3-1] Voice Message—DISA System—Option 1
→

CO-CO with DISA—Fwd/Transfer to Public CO
→

CO-CO with DISA—Fwd/Transfer to Private Network

Before the call is made, the PBX confirms that a DISA port is available. If no DISA ports are available, the call is not routed to a CO line. For transferred calls or calls to an ICD Group, if the DISA port has become unavailable when the CO-to-CO line conversation is actually established, the call is established without DISA.
When using this feature, the CO-to-CO Line Call Limitation timer should be enabled. In addition, prolonging the call through DTMF signaling is not available.

•

DISA Call Transfer from Outside Destination
An outside party such as a cellular phone can transfer a CO line call to an extension at the PBX by pressing “#” + extension number, if DISA is connected by the Automatic DISA Activation feature. This feature can be enabled or disabled through system programming.
2.12.3 [5-3-1] Voice Message—DISA System—Option 1
→

CO-CO with DISA—Transfer by DTMF "#" (Optional SD Card Required)
→

CO-CO with DISA—Return to DISA Top Menu by DTMF "*"

–	The KX-NCS4910 (Activation Key for Software Upgrade to Enhanced Version) is required to use this feature.
–	DISA security mode should be set to No Security or CO Line Security.
–	If the called extension does not answer, is busy, or is in DND mode, the DISA Intercept feature operates.
–	The party on hold can use the Call Retry feature.
–	End of Call Detection does not operate after dialing “#”.
–	Calls can only be transferred to extensions within the PBX.
–	Transfer Recall, Call Splitting and Call Transfer with Announcement are not available.

•

DISA Reorder Tone Duration
It is possible to set the DISA Reorder Tone Duration time. This specifies the length of time that a reorder tone will be sent to the caller. When the timer expires, the call will be disconnected. Call Retry is possible during the DISA Reorder Tone Duration time.

→ 2.9.5 [2-3] Timers & Counters—DISA / Door / Reminder / U. Conf—

DISA—Reorder Tone Duration

•

Call Deny
Extensions can deny DISA calls on a COS basis.

→ 2.9.12 [2-7-1] Class of Service—COS Settings—Optional Device & Other Extensions—

Accept the Call from DISA

•

Verification Code PIN Lock/Extension PIN Lock
If the wrong PIN is entered three times, the line will be disconnected. If the wrong PIN is entered a preprogrammed number of times successively, that extension or verification code will become locked, and even entering the correct PIN will not unlock it. Only an extension assigned as the manager can unlock it. In this case, the PIN will be unlocked and cleared.

→ 2.9.5 [2-3] Timers & Counters—Miscellaneous—

Extension PIN—Lock Counter

•

DISA Automatic Walking COS
The KX-NCS4910 (Activation Key for Software Upgrade to Enhanced Version) is required to use this feature.

•

Each outgoing message (OGM) can be assigned a name through system programming for programming reference.

→ 2.12.4 [5-3-2] Voice Message—DISA Message—

Name
→ [731] Outgoing Message (OGM) Name

•	PC Programming Manual
•	2.9.9 [2-6-1] Numbering Plan—Main—Features—Data Line Security Set / Cancel
•	2.11.1 [4-1-1] Wired Extension—Extension Settings—Option 2—Data Mode
•	PT Programming Manual
•	None

•	PC Programming Manual
•	2.8.4 [1-1] Slot—Card Property - IPCMPR—LAN Setting
•	→ DHCP Client
•	→ IP Address for IPCMPR Card
•	→ IP Address for VoIP-DSP
•	PT Programming Manual
•	None

•	Pulse to Tone Conversion It is possible for an extension user to temporarily switch from Pulse mode to DTMF mode in order to access special services such as computer-accessed long distance calling or voice mail services. To switch to DTMF mode, wait for a preprogrammed time period (Default: 5 seconds) after the CO line is connected, or press . This feature works only on CO lines set to Pulse mode. DTMF mode cannot be changed to Pulse mode.
•	It is possible to select a pulse rate for the CO line port which has been set to Pulse mode. There are two pulse rates: Low (10 pps) and High (20 pps).
•	It is possible to assign the minimum duration of the DTMF signal sent to the CO line port which has been set to DTMF mode.

•	PC Programming Manual
•	2.8.27 [1-1] Slot—Port Property - LCO Port
•	→ Dialing Mode
•	→ DTMF Width
•	→ Pulse Speed
•	2.8.33 [1-1] Slot—Port Property - T1 Port
•	→ CO Dial Mode
•	→ DTMF Width
•	→ CO Pulse Speed
•	PT Programming Manual
•	[410] LCOT Dialing Mode
•	[411] LCOT Pulse Rate
•	[412] LCOT DTMF Minimum Duration

•	Dial Tone Type A/B Through system programming, it is possible to select dial tone type A or B for dial tones 1 through 4. If "`Type A`" is selected, all dial tones 1 through 4 will become dial tone type A. The dial tone type for the ARS feature can be selected separately. If "`Type A`" is selected for ARS, dial tone 1A will be heard. If "`Type B`" is selected, dial tone 1B will be heard.
•	Distinctive Dial tone Distinctive dial tones can be disabled. When disabled, dial tone 1 will be heard in all cases except those marked with "*" in the table above.
•	Dial Tone Patterns All dial tone patterns have a default (→ 2.2 Tones/Ring Tones).
•	Only dial tone 1 is sent to the extensions in a VM (DPT/DTMF) group. (→ 1.19.3 Voice Mail (VM) Group)

•	PC Programming Manual
•	2.9.18 [2-9] System Options—Option 3
•	→ Dial Tone—Distinctive Dial Tone
•	→ Dial Tone—Dial Tone for Extension
•	→ Dial Tone—Dial Tone for ARS
•	PT Programming Manual
•	None

•	The modified TRS level only applies to the next one call placed at the user's extension.
•	Toll Restriction Button A manager extension must store the TRS level granted by the Dial Tone Transfer beforehand, when assigning a flexible button as the Toll Restriction button.

•	PC Programming Manual
•	2.11.5 [4-1-4] Wired Extension—Flexible Button
•	→Type
•	→Parameter Selection (for TRS Level Change)
•	2.11.13 [4-2-3] Portable Station—Flexible Button
•	→Type
•	→Parameter Selection (for TRS Level Change)
•	2.11.17 [4-3] DSS Console
•	→Type
•	→Parameter Selection (for TRS Level Change)
•	PT Programming Manual
•	None

•	PC Programming Manual
•	2.9.5 [2-3] Timers & Counters—Miscellaneous—Incoming Call Inter-digit Timer—DID
•	2.17.2 [10-2] DIL Table & Port Settings—DID/TIE
•	→ Distribution Method
•	→ DID/TIE—Remove Digit
•	→ DID/TIE—Additional Dial
•	2.17.3 [10-3] DID Table
•	PT Programming Manual
•	[451] DID Number
•	[452] DID Name
•	[453] DID Destination

•	1.3.13 CLI (Calling Line Identification) Distribution
•	1.9.10 INCOMING CALL FEATURES
•	1.17.3 Tenant Service
•	1.17.5 Time Service
•	2.1 Capacity of System Resources

•	PC Programming Manual
•	2.17.2 [10-2] DIL Table & Port Settings—DIL
•	→ DIL Destination—Day, Lunch, Break, Night
•	→ Tenant Number
•	→ VM Trunk Group No.
•	PT Programming Manual
•	[450] DIL 1:1 Destination

•	3.7.1 OPB3 Card (KX-TDA0190)
•	3.7.5 MSG4 Card (KX-TDA0191)
•	3.7.6 ESVM4 Card (KX-TDA0194)

•	PC Programming Manual
•	2.9.5 [2-3] Timers & Counters—DISA / Door / Reminder / U. Conf
•	→ DISA—Delayed Answer Timer
•	→ DISA—Mute & OGM Start Timer after answering
•	→ DISA—No Dial Intercept Timer
•	→ DISA—2nd Dial Timer for AA
•	→ DISA—Intercept Timer—Day, Lunch, Break, Night
•	→ DISA—Disconnect Timer after Intercept
•	→ DISA—CO-to-CO Call Prolong Counter
•	→ DISA—CO-to-CO Call Prolong Time
•	→ DISA—Progress Tone Continuation Time before Recording Message
•	→ DISA—Reorder Tone Duration
•	2.9.5 [2-3] Timers & Counters—Miscellaneous—Extension PIN—Lock Counter
•	2.9.12 [2-7-1] Class of Service—COS Settings—Optional Device & Other Extensions—Accept the Call from DISA
•	2.10.1 [3-1-1] Trunk Group—TRG Settings—Tone Detection
•	→ DISA Tone Detection—Silence
•	→ DISA Tone Detection—Continuous
•	→ DISA Tone Detection—Cyclic
•	2.11.1 [4-1-1] Wired Extension—Extension Settings—Intercept Destination—Intercept Destination—When called party does not answer—Day, Lunch, Break, Night
•	2.11.10 [4-2-1] Portable Station—Extension Settings—Intercept Destination—Intercept Destination—When called party does not answer—Day, Lunch, Break, Night
•	2.12.3 [5-3-1] Voice Message—DISA System
•	2.12.4 [5-3-2] Voice Message—DISA Message
•	2.13.1 [6-1] System Speed Dial
•	→ CO Line Access Number + Telephone Number
•	→ CLI Destination
•	2.17.2 [10-2] DIL Table & Port Settings
•	→ DIL—DIL Destination—Day, Lunch, Break, Night
•	→ CLI for DIL—CLI Ring for DIL—Day, Lunch, Break, Night
•	PT Programming Manual
•	[209] DISA Delayed Answer Time
•	[210] DISA CO-to-CO Line Call Prolong Time
•	[211] DISA Intercept Time
•	[475] DISA Silence Detection
•	[476] DISA Continuous Signal Detection
•	[477] DISA Cyclic Signal Detection
•	[604] Extension Intercept Destination
•	[730] Outgoing Message (OGM) Floating Extension Number
•	[731] Outgoing Message (OGM) Name
•	[732] DISA Security Mode

•	1.3.20 COS (Class of Service)
•	1.4.10 DND (Do Not Disturb)
•	1.6.6 FWD (Call Forwarding)
•	1.9.11 Intercept Routing
•	1.9.12 Intercept Routing—No Destination

•	1.3.18 DISA (Direct Inward System Access)
•	1.3.73 Walking COS

•	Multilingual Display Each extension can select its display language through personal programming (Display Language Selection).
•	Display Contrast The display contrast can be adjusted through personal programming (Display Contrast Selection). This is available only for digital proprietary telephones (DPTs) and IP proprietary telephones (IP-PTs).
•	Display Backlight Some extensions can select whether to turn the display backlight on or off through personal programming (Display Backlight Selection). For details, refer to the manual for your telephone.
•	Characters (name) or digits (number) exceeding the display's limitations are not displayed. Although in this case information may not be displayed properly, the received information is not altered.

•	PC Programming Manual
•	2.9.18 [2-9] System Options—Option 5—PT Feature Access—No. 1–8
•	2.11.1 [4-1-1] Wired Extension—Extension Settings
•	→ Option 5—Display Language
•	→ Option 5—Incoming Call Display
•	→ Option 5—Automatic LCD Switch when Start Talking
•	2.11.10 [4-2-1] Portable Station—Extension Settings
•	→ Option 5—Display Language
•	→ Option 5—Incoming Call Display
•	→ Option 5—Automatic LCD Switch when Start Talking
•	2.17.1 [10-1] CO Line Settings—CO Name
•	PT Programming Manual
•	None

•	DND for CO Line Calls/Intercom Calls The DND feature can be set for CO line calls, for intercom calls, or for both of them by the extension user.
•	DSS button in DND Mode The DSS button light will turn red if the assigned extension has set DND.
•	DND Override An extension in DND mode can be called by other extension users who are allowed to override DND in their COS.
•	Paging DND It is programmable whether the PBX pages extensions in DND mode through system programming. (→ 1.13.1 Paging)
•	Intercept Routing—Busy/DND If a call arrives at an extension in DND mode, the call can be redirected to a preprogrammed destination by the Intercept Routing—Busy/DND feature.
•	Idle Extension Hunting While searching for an idle extension within an idle extension hunting group, any extension that has DND set will be skipped. The call will go to the next extension in the group, not the Intercept Routing—Busy/DND destination.
•	If (1) a CO line call via the LCOT or T1 (LCOT/GCOT) card arrives at an extension in DND mode and (2) the Intercept Routing—Busy/DND destination is not available and (3) there is no available extension in the idle extension hunting group, then the original extension in DND mode will ring.
•	Calls from a doorphone arrive at the extension even when the extension is in DND mode.

•	PC Programming Manual
•	2.9.5 [2-3] Timers & Counters—Dial / IRNA / Recall / Tone—Tone Length—Busy Tone / DND Tone
•	2.9.11 [2-6-3] Numbering Plan—B/NA DND Call Feature
•	→ BSS / OHCA / Whisper OHCA / DND Override
•	→ BSS / OHCA / Whisper OHCA / DND Override-2
•	2.9.12 [2-7-1] Class of Service—COS Settings—Extension Feature—DND Override
•	2.11.3 [4-1-2] Wired Extension—FWD/DND
•	→ Call from CO—DND Status Availability
•	→ Call from Extension—DND Status Availability
•	PT Programming Manual
•	[507] DND Override

•	Hardware Requirement: A user-supplied door opener installed on each door.
•	A door opener can unlock a door even if no doorphone is installed.
•	Door Open Duration An opened door will remain unlocked for a preprogrammed length of time.

•	3.7.1 OPB3 Card (KX-TDA0190)
•	3.7.2 DPH4 Card (KX-TDA0161)
•	3.11.1 Connection of Doorphones, Door Openers, External Sensors, and External Relays

•	PC Programming Manual
•	2.9.5 [2-3] Timers & Counters—DISA / Door / Reminder / U. Conf
•	→ Doorphone—Call Ring Duration
•	→ Doorphone—Call Duration
•	2.9.9 [2-6-1] Numbering Plan—Main—Features—Doorphone Call
•	2.9.12 [2-7-1] Class of Service—COS Settings—TRS—TRS Level—Day, Lunch, Break, Night
•	2.9.16 [2-8-2] Ring Tone Patterns—Call from Doorphone
•	2.9.18 [2-9] System Options—Option 3—Confirmation Tone—Tone 1 : Called by Voice
•	2.12.1 [5-1] Doorphone
•	PT Programming Manual
•	[720] Doorphone Call Destination
•	[729] Doorphone Number Reference