NEC Dsx 34b Manual

							
Direct Inward Dialing
DSX Software ManualFeatures◆101
Features
DID Call Handling
The following steps illustrate how the system handles DID calls when the call  is not intercepted by an exten-
sion’s Call Forwarding or Extension Hunting.
Basic DID Call Handling
1.If yes:
V
acant Intercept
The call normally follows the following Line Over flow programming.
- 3112-01: Direct Termination in the Day  (page 819)
- 3112-02: Enable Day Over flow  (page 819)
- 3112-03: Day Over flow Destination  (page 820)
2.If no, go to the next step for routing.
1.If yes, go to the next step for routing.
- This occurs when  1401-08: Receive DID Calls  (page 630) is 
Ye s.
2.If no, the call immediately follows Line Over flow.
- This occurs when  1401-08: Receive DID Calls  (page 630) is 
No.
1.If yes, the call rings the destination extension.
- If unanswered, go to the next step for routing.
2.If no, go to the next step for routing.
1.If yes and the intercept condition is met, the call routes to the Station Intercept destination set up in:
- 2115-02: DID Station Intercept Type  (page 748).
- 2115-02: DID Station Intercept Destination  (page 748).
2.If yes and the intercept condition is not met, go to the next step for routing.
3.If no, go to the next step for routing.
1.If yes:
- If the extension is unanswered, the call follows Line Over flow.
- If the extension is busy or in DND, the call camps-on and then follows Line Over flow.
2.If no:
- If the extension is unanswered, the call follows Line Over flow.
- If the extension is busy or in DND, the call won’t go through (i.e., caller hears busy).
1.Is telco sending incorrect digits, or is there a DID Translation Table programming error?
2.Is the destination extension allowed to receive DID calls?
3.Is the destination extension available?
4.Is Station Intercept programmed?
5.Is DID Camp-On programmed (1401-09: Receive DID Camp-On  (page 631) = Yes)? 
						

							
Direct Inward Dialing
102◆Features DSX Software Manual
How Call Forwarding and Extension Hunting Interact with DID Calls
The following chart summarizes how the system handles unanswered DID calls when Call Forwarding and/
or Extension Hunting are enabled at an extension. For the specific routing details, see:
❥DID Call Handling with Call Forwarding and Extension Hunting  (page 103).
❥DID Station Intercept and Line Overflow  (page 105).
Call Forwarding
ExtensionHunting
DID Station Intercept
Line Over flow
Priority 1
Priority 2
Priority 3
Priority 4 If the call is unanswered, the system checks the highest
priority routing choice 
first (i.e., Call Forwarding).
If the highest priority routing choice is not set up to handle
the call condition, the system checks the next lower choice.
For example, if an extension has Ring No Answer Forward-
ing enabled and the call routes to that extension while it is
busy, the system will then check Extension Hunting.
If Extension Hunting is disabled or not set up to handle the
call condition, the system checks DID Station Intercept.
If no there routing choices are found, the call will follow
Line Over flow.
Key RingPriority 5 If Line Over
flow is disabled, the call will go to Key Ring
(with no over flow). 
						

							
Direct Inward Dialing
DSX Software ManualFeatures◆103
Features
DID Call Handling with Call Forwarding and Extension Hunting
The following two tables show the detailed interaction between Call Forwarding and Extension Hunting for 
unanswered DID Calls. These interactions occur when an extension user enables Call Forwarding and their 
extension is already part of an Extension Hunting group.
Call Forwarding and Type 1 (Ring No Answer Line) Extension Hunting
Destination Extension
Forwarding Type Ring No Answer Busy In DND
Busy/No Answer
*32• DID call rings destination.
• If unanswered, it rings the 
forwarding destination.
• If still unanswered, call  routes to Line Over flow. • DID call rings forwarding destination.
• If unanswered, call routes to Line Over
flow.
Immediate
*34• DID call immediately rings forwarding destination.
• If unanswered, call routes to Line Over flow
No Answer
*36• DID call rings destination.
• If unanswered, it rings the 
forwarding destination.
• If still unanswered, call  routes to Line Over flow. • DID call Camps-On to destination.
• If unanswered, it rings the forwarding destination.
• If still unanswered, call routes to Line Over
flow.
Forwarding Off
*30• DID call rings destination.
• If unanswered, it rings the 
hunt destination.
• If still unanswered, call  routes to Line Over flow. • DID call Camps-On to destination.
• If unanswered, it rings the hunt destination.
• If still unanswered, call routes to Line Over
flow.
Call Forwarding and Type 2 (Ring No Answer / Busy Line) Extension Hunting
and
Call Forwarding and Type 3 (Ring No Answer / Busy All) Extension Hunting and
Call Forwarding and Type 4 (Busy Line) Extension Hunting
Busy/No Answer *32• DID call rings destination.
• If unanswered, it rings the 
forwarding destination.
• If still unanswered, call  routes to Line Over flow. • DID call rings forwarding destination.
• If unanswered, call routes to Line Over
flow.
Immediate
*34• DID call immediately rings forwarding destination.
• If unanswered, call routes to Line Over flow 
						

							
Direct Inward Dialing
104◆Features DSX Software Manual
No Answer
*36• DID call rings destination.
• If unanswered, it rings the 
forwarding destination.
• If still unanswered, call  routes to Line Over flow. • DID call rings the hunt destination.
• If unanswered, call routes to Line Over
flow.
Forwarding Off
*30• DID call rings destination.
• If unanswered:
- Type 2 and 3 ring the 
hunt destination. 
- Type 4 rings the station 
intercept destination (if 
programmed).
• If still unanswered, call  routes to Line Over flow.
• All Camp-On and Ring No Answer intervals are set by the  1601-02: DIL No Answer Timer (page 669).
Call Forwarding and Type 1 (Ring No Answer Line) Extension Hunting
Destination Extension
Forwarding Type Ring No Answer Busy In DND 
						

							
Direct Inward Dialing
DSX Software ManualFeatures◆105
Features
DID Station Intercept and Line Over flow
The following table shows the detailed interaction between DID Station Intercept and Line Over flow for unan-
swered DID Calls. These interactions occur when an extension has DID Station Intercept ena\
bled, the DID line 
has Line Over flow enabled, and the call is not intercepted by either Call Forwarding or Extension Hunting.
DID Station Intercept and Line Over flow  
Destination Extension
Station InterceptDID Camp-On Ring No Answer Busy In DND
None
(0)1 (Enabled) • If unanswered, call 
routes to Line Over-
flow. • Call Camps-On to extension.
• If unanswered, call routes to Line Over
flow.
0 (Disabled) • If unanswered, call 
routes to Line Over-
flow. • Caller hears busy tone and call does not 
reroute.
Busy / DND (1)1 (Enabled) • If unanswered, call 
routes to Line Over-
flow. • Call Camps-On to 
extension.
• If unanswered, call  routes to Line Over-
flow. • Call routes to inter-
cept destination.
• If unanswered, call  routes to Line Over-
flow.
0 (Disabled) • If unanswered, call 
routes to Line Over-
flow. • Call routes to intercept destination.
• If unanswered, call routes to Line Over
flow.
Ring No Answer
(2)1 (Enabled) • If unanswered, call 
routes to intercept 
destination.
• If still unanswered,  call routes to Line 
Over flow. • Call Camps-On to extension.
• If unanswered, call routes to Line Over
flow.
0 (Disabled) • If unanswered, call 
routes to intercept 
destination.
• If still unanswered,  call routes to Line 
Over flow. • Caller hears busy tone and call does not 
reroute.
Busy / Ring No Answer (3)1 (Enabled) • If unanswered, call 
routes to intercept 
destination.
• If still unanswered,  call routes to Line 
Over flow. • Call Camps-On to 
extension.
• If unanswered, call  routes to intercept 
destination.
• If still unanswered,  call routes to Line 
Over flow. • If unanswered, call 
routes to intercept 
destination.
• If still unanswered,  call routes to Line 
Over flow.
0 (Disabled) • If unanswered, call 
routes to intercept 
destination.
• If still unanswered,  call routes to Line 
Over flow. • Call routes to intercept destination.
• If unanswered, call routes to Line Over
flow.
• All Camp-On and Ring No Answer intervals are set in  1601-02: DIL No Answer Timer (page 669). 
						

							
Direct Inward Dialing
106◆Features DSX Software Manual
Programming
Basic Programming
1.Be sure your T1 PCB is installed and connected and that your telco is providing T1 DID service.
2.In 3101-01: Line Type  (page 809), enter the correct circuit type for each DID line:
-
03 for DID Wink Start
-
04 for DID Immediate Start
3.In  3101-03: DTMF Dialing  (page 811), indicate whether the line is DTMF (1) or Dial Pulse (0).
4.If your telco provides DID service using E&M Wink Start DTMF signaling, choose circuit type 03 (DID 
Wink Start) and enable  3101-03: DTMF Dialing .
1.In 3301-01: Number of DID Digits  (page 834), specify the number of incoming DID digits expected 
from the connected DID service. - By default, the system expects to receive three DID digits from the connected service.
1.Use the following programs to set up DID Translation: -3302-01: Incoming DID Digits  (page 836)
(The default entry of *** means the system accepts any three digits.)
- 3302-01: Day Translation Destination  (page 836)
(The default entry of 3** means the system routes to an extension in the day mode according to the 
last two digits dialed.)
- 3302-01: Night Translation Destination  (page 836)
(The default entry of 3** means the system routes to an extension in the night mode according to 
the last two digits dialed.)
1.In  2102-01: Class of Service  (page 724), check the extension’s Class of Service level.
2.If yes, in 1401-08: Receive DID Calls  (page 630) enter Ye s.
3.If no, in 1401-08: Receive DID Calls  (page 630) enter No.
1.If yes:
- In  3121-01: Caller ID Type  (page 825), enter 
3 to enable ANI-based Caller ID for the line.
- In  3121-02: ANI/DNIS Format  (page 825), specify the type of ANI/DNIS data received from the 
telco:
- 
0 for No ANI/DNIS data
- 
1 for ANI
- 
2 for *ANI*
- 
3 for *DNIS*
- 
4 for *ANI*DNIS*
- In  3121-03: ANI/DNIS Delimiter  (page 826), indicate the type of ANI delimiter provided by the 
telco ( for options 2-4 above only ). The delimiter can be any character 0-9, #, or *. Normally, the 
delimiter is *.
1.Set the circuit type for each DID line.
2.Specify the number of incoming DID digits you expect to receive from the telco.
3.Set up the DID Translation Table.
4.Should the extension be allowed to receive DID calls?
5.Do the T1 lines provide ANI/DNIS services? 
						

							
Direct Inward Dialing
DSX Software ManualFeatures◆107
Features
- In  3121-04: Number of ANI Digits  (page 826), specify the number of digits the telco provides in the 
ANI number ( for option 1 above only ). This program does not apply to options 2-4 above.
2.If no, in 3121-01: Caller ID Type  (page 825) do not enter 3 to enable ANI-based Caller ID for the line.
DID Over flow, Camp-On, and Intercept Options
1.If yes:
- In  3112-02: Enable Day Over flow  (page 819), enter 
Ye s.
- In  3112-03: Day Over flow Destination  (page 820) enter the day over flow destination. The destina-
tion can be:
- An  extension
- A UCD Group master number
- The voice mail master number
- A Ring Group master number
- Key Ring (by pressing
 CLEAR)
-Over flow occurs after the  1601-01: Line No Answer Timer  (page 669) interval.
2.If no, in 3112-02: Enable Day Over flow  (page 819) enter No.
- When disabled, an unanswered DID call during the day diverts to Key Ring without over flow 
(unless intercepted by other features).
- The call diverts to Key Ring after the  1601-01: Line No Answer Timer (page 669) interval.
1.If yes:
- In  3112-05: Enable Night Over flow  (page 820), enter 
Ye s.
- In  3112-06: Night Over flow Destination  (page 821) enter the night over flow destination. The desti-
nation can be:
- An  extension
- A UCD Group master number
- The voice mail master number
- A Ring Group master number
- Key Ring (by pressing
 CLEAR)
-Over flow occurs after the  1601-01: Line No Answer Timer  (page 669) interval.
2.If no, in 3112-05: Enable Night Over flow  (page 820) enter No.
- When disabled, an unanswered DID call at night diverts to Key Ring without over flow (unless 
intercepted by other features).
- The call diverts to Key Ring after the  1601-01: Line No Answer Timer (page 669) interval.
1.If yes:
- In  2115-02: DID Station Intercept Destination  (page 748), assign the extension’s DID Station 
Intercept destination (e.g., an extension, UCD Group master number, voice mail master number, or 
Ring Group master number).
- In  2115-02: DID Station Intercept Type  (page 748), set the condition that will cause DID Station 
Intercept to occur.
1 = Busy/DND over flow
2 = Ring No Answer over flow
3 = Busy/DND/Ring No Answer over flow
2.If no, in  2115-02: DID Station Intercept Type  (page 748) enter 0.
1.Should the system provide Line Over flow for the DID line during the day?
2.Should the system provide Line Over flow for the DID line at night?
3.Should an extension have DID Station Intercept? 
						

							
Direct Inward Dialing
108◆Features DSX Software Manual
1.If yes, leave 1601-02: DIL No Answer Timer  (page 669) at its current value.
2.If no, adjust 1601-02: DIL No Answer Timer  (page 669) as required.
1.In 2102-01: Class of Service  (page 724), check the extension’s Class of Service level.
2.If yes, in 1401-09: Receive DID Camp-On  (page 631) enter Ye s.
3.If No, in 1401-09: Receive DID Camp-On  (page 631) enter No.
Other Related Features
Features
Extension Hunting  (page 154)
Extension Hunting has priority over DID Station Intercept and DID Line Over flow. For example, if an 
extension has a Type 3 (Ring No Answer/Busy All) hunt to voice mail and a Type 3 DID Station Inter-
cept to the operator, unanswered calls will route to voice mail. See the  IntraMail System Guide for 
more on  Extension Hunting to Voice Mail .
T1 Lines  (page 338)
T1 provides advanced digital calling and simpli fies installation. T1 lines are required for Direct 
Inward Dialing.
Tie Lines  (page 344)
Link two systems together for inter-system Intercom calling and other features.
Transfer  (page 358)
Transfer recalls do not follow DID Station Intercept.
IntraMail Features None
Operation
None.
4.Does an unanswered extension ring the correct amount of time before DID Station Intercept or 
Line Over flow occurs?
5.Should DID calls be allowed to Camp-On to an extension? 
						

							
Direct Inward Line
DSX Software ManualFeatures◆109
Features
Direct Inward Line
Description
A Direct Inward Line (DIL) is a line that rings an extension directly. Since DILs only ring one extension, 
employees always know which calls are for them. For example, a company operator can have a Direct 
Inward Line for International Sales Information. When outside callers dial the DIL’s phone number, the call 
rings the operator on the International Sales line key. The DIL does not ring other extensions.
Assigning a DIL to an extension automatically provides immediate ringing and incoming access for the line, 
with no additional programming required.
A DIL can ring:
❥Extension numbers (including the attendant’s extension)
❥Ring Group master numbers
❥UCD Group master numbers (including the voice mail master number)
Night Mode Control
The extension to which the line is terminated controls the night mode of the \
line. For example, if extension 
301 has line 1 assigned as a DIL, the user can press 
DND to switch line 1 to its night routing destination. 
Switching line 1 to night mode at extension 301 has no affect on the night mode of the system. This  flexibil-
ity could allow a service dispatcher with several DILs to independently send lines to their night destinations 
without affecting the night mode of the entire system.
Over flow for Direct Inward Lines
If unanswered, DIL calls can route to a programmed over flow destination. The over flow destination can be 
an extension, Ring Group, UCD Group or voice mail (i.e., DIL destination’s mailbox). You can set up sepa-
rate DIL over flow destinations for the day mode and at night. If unanswered at the over flow destination, the 
call diverts to Key Ring.
Conditions
• None
Default Setting
• No DILs assigned.
A DIL lets an employee know which calls are just for them. 
						

							
Direct Inward Line
110◆Features DSX Software Manual
Programming
Basic Programming
1.In 3101-01: Line Type  (page 809), check to be sure the line’s circuit type matches the connected service.
2.In 3101-03: DTMF Dialing  (page 811), indicate whether the line is DTMF (1) or Dial Pulse (0).
1.In the day:
- In  3112-01: Direct Termination in the Day  (page 819), assign the DIL day mode termination. The 
assignment can be:
- An  extension
- A UCD Group master number
- The voice mail master number
- A Ring Group master number
2.At night:
- In  3112-04: Direct Termination at Night  (page 820), assign the DIL day mode termination. The 
assignment can be:
- An  extension
- A UCD Group master number
- The voice mail master number
- A Ring Group master number
1.For a line terminated to Key Ring or a Ring Group master number during the day:
- In  2121-[01 to 24]: Feature Key Codes  (page 758), enter 
18.
- In  2121-[01 to 24]: Feature Key Data  (page 758), press 
CLEAR.
2.For a line terminated to a UCD Group master number or voice mail during the day:
- In  2121-[01 to 24]: Feature Key Codes  (page 758), enter 
18.
-
In 2121-[01 to 24]: Feature Key Data  (page 758), enter the UCD Group or voice mail master number.
3.For a line terminated to the extension during the day:
- Use the 
DND key.
4.Be sure the extension has the ability to put the system in the Night Mode.- In  2102-01: Class of Service  (page 724), check the extension’s Class of Service level.
- In  1402-05: Activate Night Mode  (page 634), enter 
Ye s.
1.Check the DIL’s circuit type.
2.Assign the DIL day and night mode terminations (answering points).
3.Set up night keys for the DIL.