Comdial Dxp Correspondance Instructions Manual

							DXP Correspondence ManualLine Programming
L
8
Line Programming
8. IThe DXP is capable of using several types of lines, and each line type
Introducing Lineoffers different programming options. Line programming allows you
to set the parameters for each line.
Programming
Line Programming
1.Name
2.Type
3.Disabled
4. Music on Bold
5.Privacy Release
6.SMDR Record
7.Cost Incoming
8.-Incoming Cost Delay
9.-Incoming Cost Route
10.Pad Level - Transmit
11.Pad Level - Receive
:XXX
:Loog Start
:No
:Source 1
:No
:Yes
:No
:No Delay
:32
:Nominal
:Nominal
The Line Menu---screen oneLine Programming 8 
- 1 
						

							8.2
Line Name
8.3
Line TypeYou can assign a name to a line. A name shows in the display of an
LCD speakerphone as an identification aid. A valid name is composed
of any seven alpha-numeric characters, but the first character must be
an alphabetic character..
Condition the line port as to the type of line or function that the port
serves.
Ground Start LinesWith ground-start lines, the DXP momentarily grounds the ring lead,
signally the CO to establish a communications link. When the CO
detects this ground, it momentarily grounds the TIP lead. The DXP
responds by removing its ground connection and bridging itself across
the tip and ring leads. The CO then removes its ground connection and
returns 
dialtone to the DXP. Ground start lines help in preventing
call-collision and are useful in high-traffic applications.
Loop Start LinesWith loop start lines, the DXP bridges a resistance across the tip and
ring leads, signaling the CO to establish a communications link for an
outgoing call. The CO detects the resulting current flow and supplies
dial tone to the DXP. The CO signals an incoming call to the DXP by
placing an alternating voltage (ring signal) on the tip lead. The DXP
then generates ringing to the DXP station being called. When a station
answers the ringing, the circuit is completed as it was for outgoing
calls. Loop start lines cannot provide any sure means of determining
when a distant party hangs up his or her telephone. For a system that
experiences moderate incoming and outgoing call volume and does
not cost calls, loop start lines provide an economical choice for
connecting the DXP to the central office (CO) equipment.
8 - 2 Line Programming 
						

							E&M Tie LinesPorts three and four on each multipurpose board are the only ports that
support E and M tie lines. Tie lines are special circuits that allow the
DXP to communicate with remotely located equipment such as the
following: another DXP, a PBX, or other common carrier (OCC), for
long distance calls.
DID LinesThe DID board lets stations have their own telephone number without
having a separate line dedicated to that station. The central office
sends digits to the DXP, which interprets the digits and routes the call
to the appropriate station. For example, you can have fifty stations and
only ten DID lines, and each station can still have its own published
telephone number. However, only ten of the stations can be on calls at
one time. DID lines are incoming only, so if you need outward dialing,
you’ll need more than just DID lines.
Auxiliary PortIf you name a line port as an auxiliary port, you condition the line port
to interface with external paging equipment instead of a telephone line.
E&M DNIS LinesDialed Number Identification Service 
(DNIS) is a Tl service feature
for E&M lines. Long distance carriers offer DNIS as a feature to dial
800 and dial 900 lines. DNIS identifies the numbers that callers dial to
reach an internal telephone system. Businesses served by a dial 800 or
dial 900 service allow calls to ring on any available line within an
assigned block of lines and then have their internal telephone system
process the DNIS information to route the calls to their proper
destinations.
Line Programming 8 
- 3 
						

							Line Programming
DXP Correspondence Manual8.4Take a line port out of service because of defect or other reason using
Line Disablethis 
prograrmning choice.
I
.
8.5
Music Or Tone
On HoldWith this feature enabled, the system will supply music, tone bursts or
other audio information to callers while they are on hold. The music or
information source is external to the common equipment and is
customer supplied. The system will accept two music sources. You
can use one source for this feature and the other source for the
background music feature discussed in Section 7.1.3. When the system
supplies tone bursts to callers while they are on hold, it sounds two .l
second-long tone bursts separated by a 
.l second interval of silence; it
repeats this tone burst sequence every 5 seconds.
8 
- 4 Line Programming 
						

							8.6
Automatic
Privacy (Privacy
Release)
8.7
SMDRAssign privacy release to a line so that a user can press the privacy
button on his or her telephone and change a private line into a
non-private one as needed. When a line is private, a station user has
exclusive use of it during a call. Also refer to section 7.37, Button,
Mapping, to map a privacy button on the user’s telephone.
When you enable this feature, the system stores SMDR information
for the specified line. Refer to section 10 for other 
SIvIDA/SMDRprogramming considerations.
8.8If you have arranged for the system to cost calls, you can arrange for it
Cost IncomingIto also cost incoming calls on a per-line basis. You can arrange for the
costing to begin as soon as the call arrives in the system, to begin after
the user answers the call, or to begin after a programmed delay. Plus,
you can pick the call-rate table that you want the system to use when it
costs the call. Refer to section 12 for other automatic route selection
programming considerations.
Line Programming 8 
- 5 
						

							Line ProgrammingDXP Correspondence Manual
8.9This feature enhances the DXPTl digital carrier transmission option,
Padthe pad level programming feature adjusts voice levels for both the
transmit and receive circuits in the individual channels. The choices
Level-Transmit,include: Gain 2, Gain 1, Nominal, Loss 1, Loss 2, Loss 3, Loss 4, and
ReceiveLoss 5. These settings provide an approximate +6 to -15 dB range of
choices. Starting at the Nominal setting, each gain level represents an
approximate 3 
dB amplification of the signal level from the previous
setting, and each loss level represents an approximate 3 
dB attenuation
of the signal level from the previous setting. Because digital
transmission does not lose volume level as readily as analog
transmission does, it is likely that the receive level may be noticeably
higher when using the 
Tl option. Therefore, you may need to select a
low setting such as Loss 2 for the voice level receive parameter when
programming this feature for 
Tl lines that are being used exclusively
for voice transmission. Further, if you choose a setting to increase the
receive gain, you should carefully examine speakerphone operation. It
is possible to select a receive gain that will, under certain conditions,
interfere with proper speakerphone operation.
8 
- 6 Line Programming 
						

							DXP Correspondence ManualLine Programming
8.10Program the line port to match either a DTMF tone or a rotary (pulse)
Dialing Modedialing line as supplied by the central office (CO).Pulse Dial Make/Pulse Dial Break (Pulse Dial Ratio)Use this procedure to set the make/break ratio for rotary dial signaling
to match rotary dial line requirements. You can set the line
make/break ratio for rotary dial (pulse dial) signaling in a more
flexible manner to match many different rotary dial line requirements.
You can set the make time and the break time independently in one
msec. increments to any time from one to 99 msec.
Pulse Dial Interdigit TimeYou can set the interdigit time between dial pulses when the system
pulse-dials a number over a line. The DXP defaults this time to 200
msec. and provides a range of timing values between 100 msec. and
one sec. that you can set in 100 msec. increments.
Line Programming (Page 2)
1.Dialing Mode: Tone
2.
Abandon Hold Release:350 MS
3.Pos. Disconnect Time:2 Set
4. Toll Groups
:l
5.
DTMF Level: Normal
6. Busy Lead:No
7. Disconnect Supervision
:No
8. Caller ID Active
:No
9.Voicemail ID:
10.DISA:No
11.DISA Voice Options:4The Station Menu-screen two
Line Programming 8 
- 7 
						

							Line ProgrammingDXP Correspondence Manual
8.11When a distant party abandons a hold condition and his or her station
Abandon Holddisconnects from the line, the central office sends a forward
disconnect signal to the system. This signal is either 50 or 350 msec.
Releaselong. Use this procedure to program the line port to match the central
office signal length.
8.12
IWhen a station drops a line after its user has finished using it, thePositivesystem waits a programmable length of time before it allows another
station to access that line. This time delay helps prevent such
Disconnect Timeconditions as call-collision. The system holds the line status light on
during the time out period.8 
- 8 Line Programming 
						

							DXP Correspondence Manual
Line ProgrammingToll
8.13
Groups
8.14
DTMF LevelYou must identify the individual lines that you do not want users to
access when they dial toll-restricted numbers. Do this by first
assigning the lines to toll groups and then assigning those toll groups
to the restricted number. There are 32 toll groups available for line
assignment. Assign one, several, or all lines to any desired toll group
or combination of toll groups as needed. See section 11 for complete
toll restriction programming details.
Adjust the audio level of the DTMF signals to a low (-5 db), medium
(0 db), or high 
(+3 db) setting. Certain sites may require a higher db
level to overcome line conditions that could interfere with reliable
dialing such as a long loop distance to the central office.
Line Programming 8 
- 9 
						

							Line ProgrammingDXP Correspondence Manual
8.15Busy
Lead
Detection
8.16
Disconnect
Supervision
8.17
Caller ID ActiveWhen you enable this feature, the system can detect an off-hook
condition in a telephony device such as a modem, FAX machine,
industry-standard telephone, or similar device that an installer has
connected to a line ahead of the system. When the system detects the
off-hook condition, it makes a busy indication appear at system
stations that have this line appearance.
NOTE: Busy Lead Detection only works on line two of each line
board.When you enable this feature, the system detects a break in loop
current anytime one occurs during an outside call. You must set this
feature to yes for DISA lines
When caller identification (ID) information is available from the
central office, take this programming action to match the line port to
the feature. You must also assign the caller ID lines to the stations and
assign special-purpose station buttons to control the feature. Refer to
section 15.2 for complete caller ID programming details.
8 
- 10 Line Programming