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Lucent Technologies DEFINITY Enterprise Communication Server Release 8.2 Administrators Guide
Lucent Technologies DEFINITY Enterprise Communication Server Release 8.2 Administrators Guide
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DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Features and technical reference 1407 ISDN service 20 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 20 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 20 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 20 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 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 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 20 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 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
DEFINITY ECS Release 8.2 Administrator’s Guide 555-233-506 Issue 1 April 2000 Features and technical reference 1414 Look-Ahead routing 20 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 20 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 20 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.