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ATT DEFINITY Communications System Generic 3 Instructions Manual
ATT DEFINITY Communications System Generic 3 Instructions Manual
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Call Waiting Termination Issue 3 March 1996 3-467 Considerations With Call Waiting Termination, the party who calls a busy single-line voice terminal does not have to hang up and try the call again later. Instead, the call waits at the called voice terminal until the called party hangs up on the current call. Call Waiting Termination applies only to busy single-line voice terminals. Calls to multi-appearance voice terminals are route d to an idle call ap pearance and do not wait. An analog voice terminal user must place the active call on ‘‘soft’’ hold (see Hold feature) and dial the Answer Hold-Unhold feature access code to answer the waiting call. The soft held call at that time becomes a ‘‘hard’’ held call. If an analog single line set has the Call Wait feature enabled and has created a conference call, the Call Wait feature is denied. For example, when caller A on an analog set is talking to caller B, then flashes and is talking to caller C, and flashes to conference B and C, then, if caller D calls caller A, the Call Wait feature is denied. Interactions Call Waiting is denied when the following features are activated at the single-line voice terminal: nAutomatic Callback (to or from the voice terminal) nData Privacy nData Restriction nAnother Call Waiting Call A Call Waiting call cannot be picked up by a Call Pickup group member. Administration Call Waiting Termination is assigned on a p er-voice terminal b asis b y the System Manager. The only administration required is the assignment of Call Waiting Termination to the desired voice terminals. Hardware and Software Requirements No a d ditional hardware or software is required.
Feature Descriptions 3-468Issue 3 March 1996 Calling Line Identification (CLI) Prefix Feature Availability The Calling Line Identification (CLI) Prefix feature is available with G3V4 R elease 3 and later releases. Description The Calling Line Identification (CLI) Prefix feature allows DEFINITY to modify calling party number (CPN) information for ISDN/PRI calls that come in to the switch on a given trunk group. These calls may terminate locally, or may be tandemed out to other private switches or central offices. This feature only a p plies to incoming calls, and is administered for and applied to all calls on a trunk group. It does not apply to calls originated locally. Based on the values in the Calling Number - Delete, Insert and Numbering Format fields, DEFINITY will delete up to 15 of the most significant digits from the incoming CPN information. If there is a digit string in the Insert field, DEFI NI TY a p pends these numb ers to the CPN after deleting the sp ecified numb er of d igits. Only the first 15 digits are p assed on when the call is routed. This feature is a requirement of the Unisource Network, but anyone may use the CLI Prefix for call accounting or redirection purposes. By using this feature in conjunction with Call Vectoring, it is possible to accomplish call routing required by Unisource, as well as Unisource-sp ecific error handling. For examp le, if ANI information is required, a vector step can check whether it is present, and if the ANI is exa ctly the same as the inserted d i gits, this call may be rejected. Considerations For switch- or adjunct-based features that require database lookup of CPN/ANI information, you will need to change the appropriate databases to reflect the CLI Prefix modifications. For example, if you use the CLI Prefix feature in conjunction with Call Vectoring, you may need to update the Vector Routing Table. Because Call Vectoring can determine whether an incoming call has Automatic Number Identification or not, if you use the CLI Prefix to a dd d i gits to incoming CPNs, you may need to program ANI detection differently. If you administer the feature to delete incoming digits, this may lead to imp recise or amb iguous CPN/ANI lookups for features such as Malicious Call Trace.
Calling Line Identification (CLI) Prefix Issue 3 March 1996 3-469 Interactions Because this feature affects the calling party information for all c alls coming in on a given trunk group, other features that use the CPN will receive modified calling number information. However, the functionality of these features will not change. Terminal d isp lays for calls that have been mo dified with the CLI Prefix will reflect the modifications. The Message Sequence tracer continues to record CPN information as it c ame in on the ISDN link, and does not record the modified number. The following features receive CPN information that may be changed as a result of the CLI prefix: nAttendant Display nAutomatic Incoming Call Disp lay nCoverage Incoming Call Identification nCall Detail Recording nCalling Number Delivery to CMS (SID/ANI) nCalling Number Display nCall Pickup nCall Vectoring: — ANI/II Digits Routing — Converse Command (VRU Inte gration) - if digits were added to the CPN, a slightly longer time may be required when the CPN is passed inband to a Voice Response Unit. — Error Trace Log (Vector Events) nCommonwealth of Ind e pendent States - Outbound Call MFR ANI Transmission nDS1 Interface nDCS Alphanumeric Display for Terminals nISDN/BRI nISDN Call-by-Call Service Selection nISDN QSIG Name and Number nISDN QSIG Call Diversion nISDN QSIG Call Transfer nISDN Gateway - 1-Way BRI Interface nIntegrated R2-MFC Signaling (DID/CO) nInter-PBX Attendant Calls (IA Service)
Feature Descriptions 3-470Issue 3 March 1996 nMalicious Call Trace - If the incoming CPN is affected by this feature, accurate lookup of the numb er may not be p ossible. nNetwork Access - Public nNetwork Access - Private Premises Bases nNetwork Access - Private Public Net Based (SDN) nPC/PBX Connection nPC/ISDN Connection nTransfer (single-line and multi-ap p earance) nTrunk-to-Trunk Transfer nVoice Terminal Display - Calling Number Display (SID/ANI/Extn ID) Administration This feature can be implemented for incoming calls on a per trunk group (incoming or two-way) basis. The administration required includes the assignment of digits to delete and/or a p pend to CPN information, and the numbering format to use. Send Calling Number must be set to “y. All of these fields are found on the ISDN/PRI Trunk Group form. NOTE: If you have an ISDN trunk group with incoming calls that are mixed between those that need this feature and those that d on’t, partition the calls into different trunk groups so that the CLI Prefix feature can be administered only for those calls that need it. Existing G3MA Bulkload scripts may need to be modified to accommodate the CLI Prefix Administration fields. Hardware Requirements None.
Call-By-Call Service Selection Issue 3 March 1996 3-471 Call-By-Call Service Selection Feature Availability This o ptional feature is available with G3vs/G3s PBP, Generic 3i, and Generic 3r, and is not available with G3vs/G3s ABP. Description Call-By-Call Service Selection allows a single ISDN-PRI trunk group to c arry calls to many services or facilities (such as a SDN, MEGACOM telecommunications service, MEGACOM 800 service, and so on) and/or to carry calls using different Inter-exchange Carriers. NOTE: The Call-by-Call Service is only applicable for Country Protocol option 1 (U.S.). Call-By-Call Service Selection uses the same routing tables and routing preferences that are used b y AAR, ARS, and GRS. The service or facility used on an outgoing Call-By-Call Service Selection call is determined by information assigned in the AAR/ARS/GRS routing patterns. As an example of how Call-By-Call Service Selection works, see the following figure. Without Call-By-Call Service Selection, each trunk group must be dedicated to a specific service or facility. Call-By-Call Service Selection eliminates this requirement by allowing a variety of services to use a single trunk group. These services are specified on a call-by-call basis. Trunking efficiency is imme diately obtained with Call-By-Call Service Selection by distributing traffic over the total numb er of available trunks. Services Used With Call-By-Call Service Selection The services used on incoming and outgoing Call-By-Call Service Selection calls are assigned after an ISDN-PRI trunk group is assigned a service type of Call-By-Call Service Selection. A Call-By-Call Service Selection trunk g roup can be administered to carry calls to many services. The available services in the US are as follows: nACCUNET Digital Service — AT&T’s digital network services for various high-volume, high-speed data transmission requirements. nINW ATS — Provides OUTWATS-like pricing and service for incoming calls. nAT&T Long Distance Service — A shared use, two-way, premises-to-p remises service that uses the public-switched network to transmit and receive voice, data, and graphics communications.
Feature Descriptions 3-472Issue 3 March 1996 nOUTW A TS B a n d — WATS is a voice-grade service providing both voice and low-speed data transmission capabilities from the user’s location to defined service areas commonly referred to as bands. Currently, the widest band is five. nMEGACOM Service — Provides an AT&T service that provides unbanded long distance services using sp ecial access (PBX to 4ESS switch) from an AT&T node. nMEGACOM 800 Service — Provides an AT&T service that provides unbanded 800 service using special egress (4ESS switch to PBX) from an AT&T node. nNetwork O perator — Provides access to the network operator. nSDN — An AT&T offering that provides a virtual private network using the public-switched network. SDN can carry voice and data between customer locations as well as off-net locations. nPresubsc rib e d Common Carrier Operator — Provides access to the presubsc ribed common carrier operator. nMaximum Banded WATS — A WATS-like offering for which a user’s calls are billed at the highest WATS band subscribed to by the user. nInternational 800 — Allows a subscriber to receive international calls without a charge to the call originating party. The subscriber of the service is charged for the calls. nMULTIQUEST. Telecommunications Service — Service b etween callers at switched-access locations and service p roviders d irectly connected to the AT&T switched network. Callers a ccess the service p roviders by dialing a 700 number. nOther User-Defined Services — New service typ es can be assigned as they are developed and defined. nCall-By-Call services by Bellcore NI-2 PRI are Foreign Exchanges (FX), Tie, OUTWATS, and INWATS. The DEFINITY switch does not supp ort the NI-2 FX, Tie, and Bonded OUTWATS services. NOTE: When the DEFINITY swi t c h is connected to 5ESS, all of the services supported under the AT&T and NI-2 country options are available. A call-by-call service selection examp le is shown in Figure 3-2.
Call-By-Call Service Selection Issue 3 March 1996 3-473 Figure 3-2. Call-By-Call Service Selection Example ISDN-PRI Messages and Information Elements Used for Call-By-Call Service Selection Although the technical details of ISDN-PRI messages and information elements are not critical to implementing the ISDN-PRI application, the following details may aid in the understanding of some readers and are therefore included in this description. Call-By-Call Service Selection allows the system to specify one of the preceding service types on a call-by-call basis. This is done via a SETUP message that indicates the intent of the originating system to initiate a call using the specified service or facility. The SETUP message contains units called information elements which specify call-related information. The information elements used with Call-By-Call Service Selection are as follows: nNetwork Specific Facility — Indicates which facilities or services are to be used to complete the call. MEGACOM TRUNK GROUP MEGACOM 800 TRUNK GROUP SDN TRUNK GROUP OUTWATS TRUNK GROUP WITH CALL BY CALL SERVICE SELECTION: A SINGLE TRUNK GROUP CARRIES CALLS FOR A VARIETY OF SERVICES ON A CALL-BY-CALL BASIS CALL BY CALL SERVICE SELECTION TRUNK GROUP DEFINITY COMMUNICATIONS SYSTEM GENERIC 3 DEFINITY COMMUNICATIONS SYSTEM GENERIC 3 WITHOUT CALL BY CALL SERVICE SELECTION: EACH TRUNK GROUP IS DEDICATED TO A SPECIFIC SERVICE PUBLIC SWITCHED NETWORK PUBLIC SWITCHED NETWORK
Feature Descriptions 3-474Issue 3 March 1996 The system also checks all incoming ISDN-PRI calls for the presence of a Network Specific Facility information element. If this information element is present, the system makes sure that the requested service is comp atible with the administration of the trunk. If the requested service is not compatible with administration, the switch rejects the call. For an outgoing call on a Call-By-Call trunk group, the Network Specific Facility information element is constructed using the Service/Feature specified on the routing p attern preference selected for the call. nTransit Network Selection — Indicates which Inter-exc hange Carrier is to be used on an inter-LATA call. If a call requires both the Service/Feature and the Inter-exchange Carrier to be specified, the Inter-exchange Carrier information is sent in the Network Specific Facility information element rather than the Transit Network Selection information element. Usage Allocation Plan O ptional Usage Allocation Plans (UAPs) may be assigned to provide more control over a Call-By-Call Service Selection trunk group. Up to three Usage Allocation Plans can be assigned for each Call-By-Call Service Selection trunk group. A Usage Allocation Plan allows the customer to set the following: nA maximum numb er of trunk group members that each specific service can use at any given time. nA minimum number of trunk group members that always is available for each specific service. The sum of the allocation plan maximums may exceed the total number of trunk group members. For example, if a trunk group has 15 members and provides access to MEGACOM service, MEGACOM 800 service, and SDN, the maximum number of trunks to be used for each of these services could possibly add up to more than 15. In this case, for example, you could administer a maximum of seven MEGACOM service calls, six MEGACOM 800 service calls, and eight SDN calls. This ensures that all trunk group members are not dominated by a specific service, yet allows for periodic fluctuations in demand. The sum of the allocation plan minimums may not exceed the total number of trunk group members. For example, if a trunk group has 10 members and provides access to MEGACOM service, MEGACOM 800 service, and SDN, the minimum numb er of trunks to be used for each of these services cannot add up to more than 10. If a UAP has been defined for a Call-By-Call Service Selection trunk group, and the type of the incoming call exceeds one of the p lan’s limits, the system rejects the call, even if a trunk is available. If a UAP has been defined for a Call-By-Call Service Selection trunk group, and a system user makes an outgoing call of a type that exceeds one of the plan’s limits, the user receives reorder tone unless other preferences are available.
Call-By-Call Service Selection
Issue 3 March 1996
3-475
As previously mentioned, each Call-By-Call Service Selection trunk group can
have as many as three UAPs. The customer can assign either fixed or scheduled
allocation plans for each Call-By-Call Service Selection trunk group, (see Screen
3-30, Screen 3-31, and Screen 3-32) which are used to administer the Usage
Allocation Schedule and plans).
nFixed
One plan a p plies at all times. The minimum and maximum usages
specified in this plan are in effect for the trunk group at all times.
nScheduled
Two or three plans can be administered to apply at different times based
on the time of day and day of the week. As many as six activation times
and associated plans can be assigned for each day of the week. At the
specified activation time, the associated plan goes into effect for the
Call-By-Call Service Selection trunk group.
Screen 3-31. CBC Service Type Usage Allocation Plan
Assignment Schedule
CBC SERVICE TYPE USAGE ALLOCATION PLAN ASSIGNMENT SCHEDULE
Page x of x
Usage Method:
Fixed? _y Allocation Plan Number: _1
Scheduled? _n
Time # Time # Time # Time # Time # Time #
Sun 00:00 1 __:__ _ __:__ _ __:__ _ __:__ _ __:__ _
Mon 00:00 1 __:__ _ __:__ _ __:__ _ __:__ _ __:__ _
Tue 00:00 1 __:__ _ __:__ _ __:__ _ __:__ _ __:__ _
Wed 00:00 1 __:__ _ __:__ _ __:__ _ __:__ _ __:__ _
Thu 00:00 1 __:__ _ __:__ _ __:__ _ __:__ _ __:__ _
Fri 00:00 1 __:__ _ __:__ _ __:__ _ __:__ _ __:__ _
Sat 00:00 1 __:__ _ __:__ _ __:__ _ __:__ _ __:__ _
Feature Descriptions
3-476Issue 3 March 1996
Screen 3-32. CBC Service Type Usage Allocation
System administration allows the customer to have anything from a simple fixed
usage allocation plan to a very flexible plan with many scheduling options. The
customer can even start out with no allocation plan and b uild the plan as the
need arises. This allows the customer to resp ond to periodic fluctuations in the
environment in a more timely manner. The customer does not have to involve the
network to fine-tune the trunk group administration. To ensure that administration
complexity is kept to a minimum, the following steps should be followed when
assigning UAPs.
1. Assign a Usage Allocation Plan for a Call-By-Call Service Selection trunk
group.
2. If scheduling is desired, add one or two more Usage Allocation Plans for
that trunk group.
3. Administer the scheduling information for the trunk group’s UAPs.
Incoming Call Handling Treatment
Call-By-Call Service Selection provides special Incoming Call Handling
Treatment for ISDN-PRI trunk groups. An incoming call on an ISDN-PRI trunk
group is handled according to a treatment table that is a dministered for that trunk
group. An example of the screen that contains this table follows.
CBC SERVICE TYPE USAGE ALLOCATION
Page 3 of 8
Trunk Allocation Plan 1 Trunk Allocation Plan 2 Trunk Allocation Plan 3
Service/ Min# Max# Service/ Min# Max# Service/ Min# Max#
Feature Chan Chan Feature Chan Chan Feature Chan Chan
____________ __ __ ____________ __ __ ____________ __ __
____________ __ __ ____________ __ __ ____________ __ __
____________ __ __ ____________ __ __ ____________ __ __
____________ __ __ ____________ __ __ ____________ __ __
____________ __ __ ____________ __ __ ____________ __ __
____________ __ __ ____________ __ __ ____________ __ __
____________ __ __ ____________ __ __ ____________ __ __
____________ __ __ ____________ __ __ ____________ __ __
____________ __ __ ____________ __ __ ____________ __ __
____________ __ __ ____________ __ __ ____________ __ __