Comdial Dxp Plus Instructions Manual

							8.3Copy Model Line (Block Programming, Line)Description:
Program some or all line ports to have the same programming as a model line port.Programming:
1. Press CONTROL T for main menu.
2. From the main menu, select lines and press ENTER.
3. From the lines menu, select model line and press ENTER.
4. Type line port number (l-240) or name of model line to be copied
and press ENTER.
5. Type line port numbers of lines to match model and press ENTER.
(Type line port numbers as n,n,nn or n-nn. )
6. Press ESCAPE to end.
Line Features Programming 8-13 
						

							/M/66-123DXP Plus Programming Instructions
8.4Dire& Inward Dialing (DID) Support
The DID line board allows incoming CO calls to reach internal DXP Ph intercom extensions by direct dialing.
No attendant assistance is necessary. Since DID lines are incoming only, their direct appearance is limited to
attendant stations where status indication may be useful. DID operation requires a group of published directory
numbers (400 maximum) provided by the telephone company central office (CO). These directory numbers are
incoming only and the DXP 
Plus translates them to the appropriate personal or group intercom number forringing. The lines will accept outgoing DTMF digits during a call to support personal identification number
dialing and similar uses.
The DXP Plus handles DID calls in the same manner that it handles regular intercom calls and will forward them
via a hunt list or a call forwarding scheme. An unanswered DID call will either continue to ring or route to a
progmmrned ring no-answer (RNA) destination.If neither forwarding nor RNA is available, the system provides
no routing.
The system returns a 
ringback signal to DID callers when a called station is in the do not disturb (DND) mode.
The system returns an off-hook indication to the CO when a DID line is disabled. The 
DXP Plus synchronized
ringing feature does not have any affect on DID calls, and the Caller ID feature is not available.
The DID line is a reverse-battery, loop-start, two-wire voice circuit.(The term reverse battery means that it is the
DXP 
Plus and not the CO that provides tip and ring supervisory battery for the loop.)The DXP Plus sends and
receives all supervisory and voice signals across the voice pair and provides all necessary signal control at its line
interface.
In the idle state, the loop is open at the CO end, with the 
DXP Plus maintaining on-hook battery polarity on thecircuit.
The CO requests service from the DXP Plus by applying a resistance across te line causing a current flow
to occur. The DXP 
Plus recognizes the current flow as a CO connection and prepares for the incoming call. The
CO does not send 
ringin since the DXP Plus generates it internally and sends it to the stations.
After the DXP 
Plus receives all of the address digits, it translates them based on the appropriate DID block
translation table and attempts to place the call to the desired station. To assure that the caller will always hear
ringback prior to the call being answered (for example, when answered by voice mail), the system delays thestation ringing until it applies 
ringback tone.
The called station sounds a distinctive ringing based on the ring code in the translation table.If the translation
table has a name for the CO digit sequence that the DID call is on, the LCD of the called station displays that
name. Otherwise, the station displays the DID block name followed by a portion of the CO digit string. If there is
neither CO digit string name nor DID block name programmed, the station displays the CO digit string alone.
If an incoming call is for either an unassigned or an uninstalled station, the DXP 
Plus routes the call to the DID
block alternate extension.If the DID Block alternate extension is unavailable, the DXP 
Phs routes the call to the
Dial 0 attendant.If the Dial 0 attendant is unavailable, the DXP 
Plus returns reorder tone to the caller.
The DXP 
Plus returns call progress signals to the CO in the interval after it receives address signalling and before
it answers. It does this within 1.5 seconds after completion of address signalling.
When a called station answers a DID call, the DXP 
Plus sends answer supervision to the CO by applying reverse
polarity to the line. The DXP 
Plus maintains this polarity reversal until either the station goes on-hook or the CO
opens the loop.
The CO signals a line disconnect condition to the 
DXP Plus by opening the loop. When the DXP Plus detects the
CO disconnect, it returns the line to idle polarity and changes the line from busy to idle. The DXP 
Plus signals a
line disconnect condition to the CO by returning the supervision battery polarity to the on-hook state. While
immediate start lines return to idle at once, wink and dela start lines maintain busy status until the DXP 
Plus
detects CO release.
6-14 Line Features Programming 
						

							8.4. IDirect In ward Dialing Line ExamplesExample 1:
Jenny’s Bakery has the following CO numbering blocks:
555-3600 to 555-3619,
555-4520 to 555-4539,
555-1200 to 555-1399.
It will receive the 36nn and 45nn calls through CO lines l-5 and the lnnn calls through CO lines 6-8. The system
requires two DID blocks for use: block one for CO lines l-5, and block two for CO lines 6-8. The numbers in
DID block one have two unique digits and the numbers in DID block two have three unique digits. Assume that
DID block one is configured as wink start, tone dial, has a 2-digit string, and is named SALES. Assume DID
block two is configured as delay start, tone dial, has a 3-digit string, and is named SERVICE.
Example 2:
Ed’s Telephone Mart starts with 20 CO numbers 555-2320 to 555-2339. Only one DID block is used and is
configured as wink start, pulse dial, with a 2-digit string. As the company grows, they add another 20 CO
numbers 555-3420 to 555-3439. You cannot simply add these numbers to the existing DID block translation
table. This is because a 2-digit string will not uniquely specify which number was dialed. You must either treat
these two CO blocks as two different DID blocks or increase the expected digit string quantity to three.
Increasing the expected digits for a DID translation block deletes all entries in that
block, and you must reprogram the table.
Line Features Programming 8-75 
						

							8.4.2DID Options
DID/DNIS Block Name
Description:
Choose a T-character name to associate with each DID/DNIS block.Programming:
Refer to Section 8.43.DID Control 
SignallingDescription:Decide upon which address supervision signalling protocol that you will use. This decision will
depend upon the type of supervision that is compatible with the CO requirements.
Immediate Start: Use this protocol for rotary (pulse dial) lines. With this protocol, the CO will
not expect address supervision signalling and may begin pulsing the dialing digits as soon as 65
msec. after it connects to the line.Wink Start: With this protocol, the CO will expect address supervision signalling. After the
CO connects to the line, the DXP Plus will reverse the polarity of the line for a period of 200
msec when it is ready to receive digits (that is, the DTMF receiver is available for tone dial
lines). This “wink” signal indicates to the CO that the DXP 
Pkus is ready to receive incoming
digits. After the wink occurs and the line polarity returns to normal, the CO will begin sending
the dialing digits. If the CO does not see the wink within 4 to 8 seconds (heavy traffic timings),
it may route the call to network reorder or retry the call on another line.Typically, a CO will
try to dial two times. A second failure will result in network reorder. Wink start protocol is the
best choice for its combination of integrity checks and retrial capabilities.
Delay Start: With this protocol, the CO will expect address supervision signalling.
Approximately 
100 msec. after the CO connects to the line, the DXP Plus will reverse the
polarity of the line for a period of at least 140 msec. It will hold this reversal until it is ready toreceive incoming digits. At that time, it will return the polarity to normal. After the line
polarity returns to normal, the CO will begin sending the dialing digits. If the CO does not see
the line polarity return to normal within 4 to 8 seconds, it will route the call to network reorder.
There is no requirement for the CO to retry failures on lines with delay dial signalling.Programming:
Refer to Section 8.4.3.
8- 16 Line Fea Turks Progranming 
						

							Expected CO DigitsDescription:Obtain a block of numbers for use from the CO.The DXP Plus supports a maximum of 400
numbers (for example, 555-1000 through 555-1399).You can have a maximum of four DID
blocks with each DID block using its own name, signalling protocol, digit addressing method
and number of digits needed to avoid numbering conflicts. As a default, the system assigns all
DID lines to block one. A DID block represents a group of lines that the system will use to
receive calls for one or more CO directory number blocks.
NOTE: You will derive maximum user convenience ifyou choose the CO block to match theintercom numbers that you have assigned to the DXP Plus system. (For example, 
if your
intercom numbers are 1000 
- 1399, they would match the sample CO block.)
Determine the quantity of unique digits in the string that you expect to receive from the CO.
The number of digits expected should be large enough to avoid numbering conflicts within a
DID block and provide future growth. In the case of the CO block mentioned above, the
quantity of unique digits is three to cover 1000 through 1399. If the CO block was 555-l 100
through 555-l 192, the string quantity would be two to cover 00 through 480.
Programming:Refer to Section 8.4.3.Dialing Mode
Description:Based upon the system’s expected incoming call volume and recommendations and
requirements of the CO, determine whether the CO will send address digits by DTMF tones or
by loop pulse (rotary) dialing. (Always choose DTMF tones if possible.)
Programming:Refer to Section 8.4.3.
ANI Delivery
Description:Enable or disable the DXP Plus to process ANI information that is delivered by the long
distance common carrier as a 
Tl feature on dial 800 and dial 900 lines. Refer to Section 8.7.1
for details about the ANI feature.
Programming:Refer to Section 8.4.3.DISA Voice Options
Description:Use the DISA Voice Options 1 through 4 to select digital voice announce (DVA) message
levels. For example, selecting DISA voice option 2 will cause welcome greeting 2, day main
menu 2, night main menu 2, recall no answer 2, and recall busy 2 prompts to play whenever a
DISA-configured DID line is covered by DVA. Refer to 
Section I6 for complete DVA
programming details.
Programming:Refer to Section 8.4.3.DID Alternate Routing
Description:Use this procedure to select an attendant station to serve as an alternate routing station. The
system will route DID calls to this station if it cannot find the digits it receives from the CO inthe translation table. The system will ring this station with a distinctive ring tone or pattern that
you program. If you do not select an attendant station with this procedure, the system routes the
call to the dial 0 station. If the dial 0 station is not available, the system returns a reorder tone to
the caller.
Programming:Refer to Section 8.4.3.
Line Features Programming 8-l 7 
						

							lM166-123DXP Pius Programming hsfruefions
8.4.3DIDlDNlS ProgrammingProgramming: 1.
2.
3.
4.
5.
6.
Press CONTROL T for main menu
From the main menu, type the selection for lines and press ENTER.
From the lines menu, type the selection for 
DID/DNIS block programming
and press ENTER.
From the 
DID/DNIS block prompt line, type the DID/DNIS block number
and press ENTER.
From the 
DID/DNIS block programming menu, select options, and press ENTER
From the options menu, set the parameters for the 
DID/DNIS block that you areprogramming:
NZUllt3Type up to seven characters and press ENTER.
NOTE: End the DID/DNIS block name with a space if you desire a blank space between the
name and the CO digits when they show on an LCD speakerphone’s display. Also, the
number of CO digits that will show in the display is dependent on the length of the
DID/DNIS block name.Control Signalling
Press SPACE bar for protocol choice and press ENTER.
Expected DigitsType quantity (O-7) of digits and press ENTER.
Dialing ModePress SPACE bar for choice and press ENTER.
AN1 DeliveryPress SPACE bar for Yes or No and press ENTER.
DISA Voice OptionsType DVA message identification number (l-4) and press ENTER.Alternate Routing
Type intercom number (up to four digits) for station to handle
misdialed calls.
Ring CodeType code (1-8) to specify the ringing pattern for calls to the
alternate station.
7. When finished, press ESCAPE.
8.Type y to accept changes, n to reject them, or r to resume editing
then press ENTER to return to the 
DID/DNIS block programming menu.
iVOTE: If you save the changes and you have changed the expected digits value, additional
prompts may appear.
6-16 Line Fea%ures Programming 
						

							8.4.4DID/DNIS Translation TablesDescription:
When you initialize a translation table, you must first enter the string of CO digits that you
obtain from the telephone company. Then you must enter the intercom number that you want to
match with the first CO digit sequence in the string. With this, the system automatically
matches the remainder of the CO digit string to consecutive intercom numbers beginning with
the one that you entered. You can edit the translation table by selecting the item number for
each entry and making the changes that you deem necessary. The translation table includes thefollowing listed items:
CO Dipit String: This is the actual string of digits expected from the CO. Within a table, each
CO digit sequence in the string must be unique. While each CO digit sequence must have an
assigned extension number, you can assign the same extension number to several CO digit
sequences if you wish.
Name: As an option, you can enter a seven character name for each CO digit sequence in thestring. If you assign a name, the system will use it for LCD display during signalling.
Dav Number: This personal or group intercom number is the one that the system will ring when
a 
DID/DNIS call arrives through the matching CO digit sequence during normal or daytime
operations. 
DID/DNIS will not support Delay Ring, Day 1 ring, or Day 2 ring modes.
Nipht Number: As an option, you can assign a personal or group intercom number that the
system can ring when a 
DID/DNIS call arrives through the matching CO digit sequence during
night transfer (of ringing) operations.
Rinp Code: As an option you can choose one of eight distinctive ringing codes for each CO
digit sequence in the string. Remember, the proprietary analog telephones provide only fourdistinctive ring possibilities.
Line Features Programming 8-19 
						

							IM166-123BXP PIUS Programming InsPfi~e~iof9s
DID Translation Tables ProgrammingProgramming:
1~Press CONTROL T for main menu.
2.From the main menu, type the selection for lines and press ENTER.
3.From the lines menu, type the selection for DID/DNIS block programming
and press ENTER.
4.From the DID/DNIS block prompt line, type the DID block number and press ENTER.
5.From the DID/DNIS block programming menu, select initialize translation table,
and press ENTER,
NOTE: Ifyou choose the initialize translation table entry, the system will prompt you to enter a
range of CO digit strings (system maximum is 400 strings and maximum digits per string
is seven) and a starting extension number corresponding to the first CO digit 
string*
Once you confirm your changes, the system will update the translation table with
sequential extension numbers that are associated with the sequence of CO digit strings.
You can repeat this process, as needed, for other sequences of numbers.
6.When finished, press ESCAPE to return to the DID/DNIS block programming menu.
7.From the DID/DNIS block programming menu, select edit translation table,
and press ENTER.
The screen shows a translation table in which you can perform selective editing.
NOTE: If there are more numbers in the DID/DNLS block than the screen can show9the system
places them on underlying pages.Press and hold CONTROL and type N or P to display
each next or previous page.The tab/e will form the screen so the CO digits are
displayed in sequential order. You can add additional entries to the end of the tablethat
will appear in sorted order the next time you access the table.
8.When finished, press ESCAPE twice
9.Type y to accept changes, n to reject them, or r to resume editing and press ENTER.
10. Press ESCAPE three times to return to main menu.
You can erase the entries in the translation table using the system default menu.
1 eFrom the main menu, select system and press ENTER.
2.From the system menu, select defaults, and press ENTER.
3.From the defaults menu, select DID translation tables and press ENTER.
4.Type the DID/DNIS block number (1-Q and press ENTER. The system automatically
removes all entries in the chosen table.
5.Press ESCAPE twice to return to main menu.
DIDiDNIS Translation Table, DefaultDescription:You can clear programmed translation tables with this procedure.
Programming;1. Press CONTROL T for main menu.
2. From main menu, select system and press ENTER.
3. From system menu, select defaults and press ENTER.
4. From defaults menu, select DID translation table and press ENTER.
5. Type 
DID/DNIS table number (l-4) and press ENTER.
6. Repeat step 5 until finished.
7. Press ESCAPE to end.
8-20 Line Features Programming 
						

							8.5Ground Start Line Support
Description:The multipurpose line board provides system interface for loop start lines, ground start lines,
and E and M tie lines. These are typically the three different line types that the central office
(CO) makes available for connection to the public switched network. With the ground start line
type, the DXP Plus momentarily grounds the ring lead to signal the CO to establish a
communications link for an outgoing call. When the CO detects this, it acknowledges by
momentarily grounding the tip lead. The DXP Plus responds by removing its ground
connection and bridging itself across the tip and ring leads. The CO then removes its ground
connection and returns dial tone to the DXP Plus.
For an incoming call, the CO grounds the tip lead and places an alternating voltage on the ring
lead for the DXP Plus to sense. If you set the incoming alert signal to its ring optional setting,
the DXP Plus detects tip-lead ground and then causes its ring generator to generate ringing to
the station being called. If you set the incoming alert signal to its ring required setting, the DXP
Plus waits until the CO applies the alternating voltage before the DXP Plus generates ringing to
the station. When a station answers the ringing, the circuit is completed as it is for outgoing
calls.
Because ground start lines are controlled at both ends, they are capable of a release supervision
that provides a sure means of determining when a distant party hangs up his or her telephone.
This is very important in applications where the system costs the calls. Also, since the
signalling protocol indicates which end requests the line, it helps prevent call collisions and
glare and thus is useful in applications where there is a high volume of incoming and outgoing
calls occurring on the same lines.
Ground start lines are standard protocol for remote networking and are useful for connecting the
DXP Plus to private branch exchange (PBX) equipment. For ground start lines to be
dependable, you must ensure that you have connected the DXP Plus to a low 
resistan telephone
company ground.
NOTE: The Federal Communications Commission (FCC) requires that you inform the central
ofJice that the DXP Plus is configured as an MF (multipurpose) registered device if you
connect it to ground start lines.
With ground start lines, set the following feature parameters:
- Incoming Alert Signal
For rinz reauired, the DXP Plus must detect a ring signal on the line before it will send a
ring signal to a station. This method is normally used with systems that use synchronized
ringing to prevent a long first ring.
r~For r=inP ontional, the DXP Plus sends a ring signal to a station as soon as it detects a
ground on the tip lead of the line (put there by the calling equipment) or when it detects a
ring signal on the line. This method allows the station to receive a ring signal in less time
than the ring required method does; however, phantom ringing can occur on poorly
grounded lines or lines that fail from the CO.
- Dialing Mode
- Toll Groups
- Busy Lead
- voice mail ID
- Incoming Alert Signal
- DTMF Level
- Caller ID Active
- Line Group
Programming:Refer to Section 8.5. I.Line Features Programming 8-21 
						

							lMR%G123DXP PIws Programming hsfrwcfions
8.5. IGround Start Line Support ProgrammingProgramming: 
1 D
2.
3.
4.
5.
6.
7.
8.
9.
Press CONTROL T for main menu.
From the main menu, select lines and press ENTER.
From the lines menu, select line programming and press ENTER.
Type line port number l-240 or previously assigned name and press ENTER.
The system displays page 1 of the line programming menu.
From line programming menu, type item number for line type and press ENTER.
Press SPACE bar to toggle line type and press ENTER.
From line programming menu, type item number for another parameter and press ENTER.
Respond to prompt action for feature setting, and press ENTER to accept setting.
Repeat steps 7 and 8 for all required parameters.
10. Press CONTROL and type 
N and the system will display the menu page 2 of lineprogramming menu.
NOTE: The programming items shown on menu page 2 are for the line port type that you
selected in step 
7. These items will be different for each line type.
11.
12.
13.
From menu page 2 of line programming menu, type item number for feature
and press ENTER.
Respond to prompt line action for feature setting, and press ENTER to accept setting.
From menu page 2 of line programming menu, repeat steps 
1 I and 12 for
all required choices,
14.When finished, press ESCAPE twice.
15.Type y to accept changes, n to reject them, or r to resume editing and press ENTER.
16.Repeat steps for each line port or press ESCAPE to end.
8-22 Line Feafwres Programming