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Lucent Technologies DEFINITY Enterprise Communications Server Release 8.2 Instructions Manual

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    							DEFINITY ECS Release 8.2
    Administrator’s Guide  555-233-506  Issue 1.1
    June 2000
    Features and technical reference 
    1417 ISDN service 
    20
    nDistributed Communications System
    If both DCS and ISDN features are provided over the same facility with a 
    DEFINITY ECS, DCS displays generally override ISDN displays. 
    However, with DEFINITY ECS, the ISDN connected name and number 
    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 
    						
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    Features and technical reference 
    1418 Leave Word Calling 
    20
    nWideband Switching (NxDS0)
    DEFINITY ECS does not support wideband switching on BRI 
    connections.
    Related topics
    Refer to Administered Connections ‘‘
    Administered Connections’’ on page 1144 
    for detailed information on this feature.
    Refer to ‘‘
    Call-by-Call Service Selection’’ on page 1305 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 1342 for 
    information on assigning data channels to bearer channels on one or more circuit 
    packs.
    Refer to ‘‘
    Generalized route selection’’ on page 1351 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 1423 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 1600 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. 
    						
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    1419 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. 
    						
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    1420 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
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    Features and technical reference 
    1421 Listed Directory Numbers 
    20
    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 646, 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. 
    						
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    1422 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
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    Features and technical reference 
    1423 Look-Ahead routing 
    20
    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 
    						
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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 
    						
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    1425 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.  
    						
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    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 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. 
    						
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