Lucent Technologies DEFINITY Enterprise Communication Server Release 8.2 Administrators Guide

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1407 ISDN service 
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can override the DCS called name and number if the Display Connected 
Name/Number for ISDN DCS Calls field is y on the Feature-Related 
System Parameters screen.
BRI trunks support DCS if using a BX.25 link to transport the DCS 
messages. DCS+, also known as DCS Over ISDN D-Channel, 
according to 
the
 AT&T protocol, is not supported on BRI trunks.
nFacility Test Calls
Neither BRI or PRI trunks support Facility Test Calls.
nFrance VN4 Protocol
The France national VN4 protocol is supported on BRI trunks as ETSI.
nGeneralized Route Selection
BRI trunks are capable of carrying 56Kbps or 64Kbps data calls. The link 
coding that restricts certain PRI trunks to 56Kbps only does not apply to 
BRI trunks.
nGerman 1TR6 Protocol
The German national 1TR6 protocol is not supported over BRI trunks.
nMessage Sequence Tracer
ISDN-BRI trunks support Message Sequence Tracer. However, certain 
filtering capabilities available for PRI trunks are not available. Specifically, 
it is not possible to filter BRI trunk messages based on incoming/outgoing 
calling/called number.
nNetwork Access - Public (LEC/AT&T/Other Carriers)
Public-network access using BRI trunks is available but only in those 
countries that support point-to-point BRI connections. In the U.S., BRI 
access is offered only by the Local Exchange Carriers and not by 
Interexchange Carriers such as AT&T.
nNetwork Access - Private Premises Based
Full support for private-network connections using BRI trunks is available.
nNon-Facility Associated Signaling
Non-Facility Associated Signaling is not supported on BRI connections.
nTemporary Signaling Connections
DEFINITY ECS does not support Temporary Signaling Connections 
according to the AT&T protocol on BRI trunk interfaces. Only the QSIG 
NCA TSC protocol is supported on these interfaces 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1408 Leave Word Calling 
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nWideband Switching (NxDS0)
DEFINITY ECS does not support wideband switching on BRI 
connections.
Related topics
Refer to Administered Connections ‘‘
Administered Connections’’ on page 1133 
for detailed information on this feature.
Refer to ‘‘
Call-by-Call Service Selection’’ on page 1295 for detailed information 
on this feature.
Refer to DEFINITY ECS Administration for Network Connectivity for information 
on Distributed Communications System (DCS) networks and on QSIG and QSIG 
features such as Call Diversion, Call Transfer, Name Identification, and Path 
Replacement.
Refer to ‘‘
Facility and Non-Facility Associated Signaling’’ on page 1331 for 
information on assigning data channels to bearer channels on one or more circuit 
packs.
Refer to ‘‘
Generalized route selection’’ on page 1340 for information on this 
feature that matches calls to appropriate transmission facilities based on the 
endpoints and the type of call (for example, voice or data).
Refer to ‘‘
Look-Ahead routing’’ on page 1413 for information on balancing call 
volume across a network by automatically rerouting ISDN calls to other switches 
in the network.
Refer to ‘‘Wideband Switching’’ on page 1587
 for information on providing 
high-speed end-to-end connectivity for applications (such as video conferencing) 
that require high bandwidth.
Leave Word Calling
Leave Word Calling (LWC) allows internal system users to leave a short 
preprogrammed message for other internal users. When the message is stored, the 
Automatic Message Waiting lamp on the called telephone lights. Users can 
retrieve LWC messages using a telephone display, Voice Messaging Retrieval, or 
AUDIX. Messages may be retrieved in English, French, Italian, Spanish, or a 
user-defined language.  
DEFINITY ECS also provides voice synthesis (either English or Italian) for LWC, 
depending on which voice-synthesis circuit pack is installed in the system. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1409 Leave Word Calling 
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The system can indicate that one telephone received a LWC message on a second 
telephone. The system lights a remote Automatic Message Waiting lamp at the 
remote telephone and the Automatic Message Waiting lamp lights at the called 
telephone. The Remote Automatic Message Waiting lamp is a status lamp 
associated with a button assigned for this purpose. Thus, an assistant’s telephone 
could light when an executive receives a LWC message. If the executive calls to 
retrieve messages, the assistant knows at a glance if any messages have been left.
Users without telephone Display can have their messages retrieved by a 
system-wide message retriever or by covering users in their Call Coverage path. 
They can also use Voice Message Retrieval.
The system restricts unauthorized users from displaying, canceling, or deleting 
messages. The Lock function restricts a telephone and the Unlock function 
releases the restriction. Users activate Lock by dialing a system-wide access code. 
They cancel Lock by first dialing a system-wide access code and then an Unlock 
security code unique to the telephone. These functions apply only to the telephone 
where the function is active. You can assign a status lamp to show the lock status 
of the telephone.
Considerations
nYou can administer up to 10 telephones (or nine telephones and the 
attendant console group) as system-wide message retrievers.
nIf the stored-message level reaches 95 percent of capacity, the status lamps 
associated with all Coverage Message Retrieval buttons in the system flash. 
These lamps continue to flash until the stored-message level falls below 85 
percent. Authorized retrievers can selectively delete messages to gain 
storage space. Old messages are not purged automatically by the system.
nLWC messages cannot be stored, canceled, or retrieved for Vector 
Directory Number extensions.
Interactions
nAUDIX Interface
LWC Cancel cannot be used to cancel an AUDIX message.
nBridged Call Appearance
A LWC message left by a user on a bridged call appearance leaves a 
message for the called party to call the primary extension for the bridged 
call appearance. When a user calls a primary extension and activates LWC, 
the message is left for the primary extension, even if the call was answered 
at a bridged call appearance. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1410 Line Lockout 
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nCall Coverage
You can use LWC with or without Call Coverage. However, the two 
features complement each other. The Coverage Callback option of Call 
Coverage is provided by LWC. Also, a caller can activate LWC for the 
called party even if the call has been answered by a covering user.
nCentralized Attendant Service
LWC Message Retrieval does not work with CAS.
nConference
A member of a conference call cannot activate LWC because the user 
cannot be uniquely identified. After LWC has been activated for a party on 
a conference or transfer, the conference or transfer originator cannot press 
Conference/Transfer a second time to return to the original call. The 
originator must select the call appearance button to return to the 
previously-held call.
nExpert Agent Selection
When an EAS agent is logged into a telephone, the agent can only retrieve 
LWC messages left for that agent’s login ID. To retrieve LWC messages 
left for that telephone, the agent must log out.
When an EAS agent is logged into a telephone, its Message lamp defaults 
to tracking the status of LWC messages waiting for the telephone. 
However, you can assign the Message lamp to track the status of LWC 
messages waiting for the agent’s login ID.
nVector Directory Number
LWC messages cannot be stored, cancelled, or retrieved through VDN.
Line Lockout
Line Lockout removes single-line extensions from service when users do not hang 
up after receiving dial tone or intercept tone for an administered length of time. 
You can administer the system to play a special “howler” tone before locking an 
analog extension by setting the Station Tone Forward Disconnect field to 
busy on 
the ‘‘
Feature-Related System Parameters’’ screen. For the howler tone to play, a 
Lucent representative must also enable the Howler After Busy field on the 
‘‘
System Parameters Country-Options’’ screen. 
If you want the system to disconnect and optionally lock out users who have let an 
outgoing public network trunk call ring for an extended period of time, you can 
have Lucent enable the Disconnect on No Answer by Call Type field, also on the 
‘‘
System Parameters Country-Options’’ screen.  
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1411 Listed Directory Numbers 
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Line Lockout occurs when:
nA user does not hang up after the other party on a call is disconnected.
The user receives the dial tone for 10 seconds and then receives the 
intercept tone for the length of time administered in Line Intercept Tone 
Timer on the Feature-Related System Parameters screen. If the handset 
remains off-hook, the telephone is taken out of service.
nA user pauses for 10 seconds between digits while dialing.
The user receives intercept tone for 30 seconds. If the handset remains 
off-hook, the telephone is taken out of service.
The out-of-service condition remains in effect until the user hangs up.
Considerations
nThe out-of-service condition provided by Line Lockout does not tie up 
switching facilities.
nLine Lockout does not apply to multiappearance telephones.
Related topics
See ‘‘
Feature-Related System Parameters’’ on page 632, Time Before Off-hook 
Alert for more information. 
Listed Directory Numbers
Listed Directory Numbers (LDN) has two capabilities that allow outside callers to 
access your attendant group, depending on the type of trunk used for the incoming 
call. You use one capability to allow attendant group access via incoming direct 
inward dial (DID) trunks. You use another capability to allow attendant group 
access via incoming central office (CO) and foreign exchange (FX) trunks. 
Brief description
The system routes both incoming DID calls and incoming FX and CO calls to an 
attendant group, depending on how you administer the trunks. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1412 Listed Directory Numbers 
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How the system routes incoming DID trunk 
calls to the attendant group
Incoming DID calls route only to an extension. The LDN feature allows you to 
assign one or more extensions to an attendant group. The system uses the LDN 
extension, or extensions, to route calls to an attendant group.
How the system routes incoming FX and CO 
trunk calls to the attendant group
Incoming FX and CO trunks can terminate at an attendant group, although you 
administer your system to terminate the calls elsewhere. You can administer the 
system to terminate an incoming FX or CO trunk to one of the following:
nAttendant group
nExtension (This could be a VDN, an ACD split, a DDC group, a UCD 
group, a remote access extension, or any system extension.)
If you decide to terminate the call at the attendant group, the system treats the call 
as an LDN call. 
Considerations
The number of listed directory numbers that you can assign depends on your 
system’s configuration. See DEFINITY ECS System Description for capacity 
information. 
Interactions
nNight Service
If you activate night-service capability and a night console is not assigned 
or is not operational, incoming LDN calls route as follows:
— DID LDN calls route to a designated DID LDN night extension. If 
no DID LDN night extension is designated, DID LDN calls route to 
the attendant.
— Incoming CO or FX trunk calls route to the night destination 
specified for the trunk group. If no night destination is specified for 
the trunk group, the calls route to the normal incoming destination 
for that trunk group.
— Internal calls and coverage calls to the attendant route to the DID 
LDN night extension during night service. 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1413 Look-Ahead routing 
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Look-Ahead routing
Look-Ahead Routing (LAR) allows the switch to reroute an outgoing ISDN call 
that is not completing. The switch attempts to complete the call along a different 
routing preference, or it tries the current routing preference a second time. If the 
current preference fails twice, the next routing preference is tried.
LAR can be administered at an origination switch or a tandem switch. It can be 
turned off at different points in the network to reduce network load. You use LAR 
with AAR and ARS, GRS, UDP. You can also use it with a Feature Access Code 
ISDN Access Code. A LAR field is administered on the Route Pattern screen. 
NOTE:
When LAR is used in a mixed network of DEFINITY ECS and 
pre-DEFINITY ECS switches, LAR ends at the pre-DEFINITY ECS switch 
and calls are rejected the normal way. However, if a LAR-triggering cause 
value is passed back in the network to a DEFINITY ECS that is enabled for 
LAR, LAR is attempted from that switch again.
Detailed description
LAR can be administered for each ISDN route preference in each Pattern Number. 
The maximum number of LAR attempts per call per switch is 2 times the number 
of route preferences in the route pattern. LAR can be administered at each 
intermediate node that the call may be tandemed through to allow the attempt of 
all possible routes. 
You can control LAR by:
nadministering it on a per route-preference basis
npartitioning trunks
nlimiting the number of hop counts
LAR activation
LAR is active when a call is rejected with a cause value in the range of #34–#47 
and #3 (no route to destination). The range of #34–#47 indicates congestion and 
that resources are unavailable. The following cause values activate LAR:
Cause Value Cause Description
3 no route to destination
34 no circuit/channel available
38 network out of order 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
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NOTE:
When country code 13, protocol version a, is administered on the DS1 
Circuit Pack screen, only the cause values #10 and #89 activate LAR.
LAR terminates when:
ncall is successfully routed
ncall is rejected with a non-LAR-triggering cause value
nno further route preference can be used to route the call
LAR measurement
You can measure the number of attempted and successful LAR reroutes. The 
Measurements LAR Route Pattern screen displays LAR measurements for a 
particular route pattern. See DEFINITY ECS System Monitoring and Reporting 
for more information.
Interactions
nAutomatic Circuit Assurance
LAR rerouting attempts are recorded as short holding time calls.
nDistributed Communications Systems
If a non-DCS trunk preference is selected for rerouting a DCS call, DCS 
feature transparency is lost. If LAR for a DCS call is done within the same 
DCS trunk group, feature transparency is not lost.
nQSIG Networks
If a non-Supplementary Services B (SSB) trunk preference is selected for 
rerouting a SSB call, QSIG feature transparency is lost. If LAR for a QSIG 
call is done through either the same or another SS B trunk group, feature 
transparency is not lost. 41 temporary failure
42 switching equipment congestion
43 access information discarded
44 requested circuit or channel not available
47 resources unavailable
Cause Value Cause Description 
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1415 Loss Plans 
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nRingback Queuing
When a call originates and queues at the trunk group queue, the call can be 
placed in queue multiple times if LAR is active. The call originator can be 
called back each time the call is continued automatically.
nSatellite Hop Limit
Satellite Hop Limit always takes precedence over LAR. When the 
maximum hop limit is reached for a route preference, the last call routing 
attempt is denied and the call is rejected with a cause value of #28 — 
invalid number format. This value does not activate LAR. 
nSystem Measurements
System resource use during LAR attempts are included in existing system 
measurements and performance reports. For more information about LAR 
system measurements, refer to DEFINITY ECS Reports.
Related Topics
Refer to Route Pattern
 for information on the Route Pattern screen.
Loss Plans
Loss plans determine the amount of loss (quieter) or gain (louder) applied on 
calls. Usually, your system uses a pre-defined loss plan that is based on the 
administered country code. In some circumstances, you may be able to change the 
loss plan used by your system on a per trunk or per phone basis. 
!CAUTION:
The values in the loss plan can significantly affect the quality of service that 
your users experience. Therefore, in order to change the loss plan you must 
thoroughly understand loss plans and your particular configuration. We 
recommend that you seek technical assistance from Lucent before making 
any modifications to the loss plan.
In order to be able to modify your loss plan, the Digital Loss Plan Modification 
field must be set to 
y on the System Parameters Customer-Options screen, and the 
Customize field must also be 
y on the System Parameters Country-Options screen. 
A Lucent technologies representative must enable these fields for you. 
The 2 Party Loss Plan page of the System Parameters Country-Options
 screen 
allows you to set the gain or loss levels (in dB) between two parties on a call. Each 
row on this screen is considered a different loss group. You can assign a loss group 
to a particular phone or trunk by administering a value for the Loss Group fields  
						

							DEFINITY ECS Release 8.2
Administrator’s Guide  555-233-506  Issue 1
April 2000
Features and technical reference 
1416 Loudspeaker paging 
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on the Station and Trunk Group screens. This allows you to use different loss 
plans for different types of phones or different trunk groups. 
The Tone and Conference Loss Plans page of the System Parameters 
Country-Options screen allows you to set the gain or loss levels (in dB) between 
all parties on a conference call, as well as the total gain or loss in a conference 
based on the number of parties. 
Loudspeaker paging
You can connect DEFINITY ECS to loudspeaker systems and allow users to page 
from their phones. You can administer up to 9 separate zones (sets of 
loudspeakers) on DEFINITY ECS, so an announcement can be made to one group 
or location without disturbing people who don’t need to hear the announcement. 
Auxiliary trunks connect the speakers in each zone to ports on an auxiliary trunk 
circuit pack.
Brief description
DEFINITY ECS offers 2 types of loudspeaker paging. You can use each 
separately, and you can also use both together.
How users place voice pages
With standard voice paging, users page by dialing the trunk access code assigned 
to the zone they wish to page. If users have an active call, they must manually put 
the call on hold or park it before they dial the trunk access code.
When deluxe paging is enabled, users can automatically park an active call when 
they page, as described below.Voice paging Voice paging allows users to make announcements over a 
loudspeaker system from their phones. You can integrate voice 
paging and Call Park by enabling deluxe paging.
Chime paging If frequent voice pages are undesirable, you can assign a 
unique series of chimes (a chime code) to each extension. The 
chime code assigned to that extension plays over the speakers 
whenever that extension is paged.
Chime paging is sometimes called Code Calling Access.