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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
    Screen reference 
    1007 Trunk Group 
    17
    Bit Rate
    This field specifies the baud rate to be used by pooled modems. This field appears 
    when the Comm Type field is 
    avd or rbavd. It also appears if the Comm Type 
    field is 
    data, but only if the ISDN-PRI field is y on the System-Parameters 
    Customer-Options screen.
    Synchronization
    This field determines whether the trunk group will use synchronous or 
    asynchronous communications. This field appears if:
    nthe Group Type field is dmi-bos or isdn
    nthe Group Type field is access, co, fx, tandem, tie, or wats and the 
    Comm Type field is 
    avd or rbavd.
    nthe Group Type field is access, co, fx, tandem, tie, or wats, the Comm 
    Type field is 
    data, and the ISDN-PRI field or the ISDN-BRI Trunks field is 
    y on the System-Parameters Customer-Options screen.
    Duplex
    This field specifies whether a two-way trunk group allows simultaneous 
    transmission in both directions. This field appears when the Comm Type field is 
    avd or rbavd. It also appears if the Comm Type field is data, but only if the 
    ISDN-PRI field is enabled on the System-Parameters Customer-Options screen.
    NOTE:
    Even if the trunk group supports full-duplex transmission, other equipment 
    in a circuit may not.
    Valid entries Usage
    300
    Enter the speed of the fastest modem that will use this trunk 
    group.
    1200 
    2400
    4800
    9600
    19200
    Valid entries Usage
    async
      Do not change this field without the assistance of Lucent or 
    your network service provider.
    sync
    Valid entries Usage
    full
     Enter full in most cases: this allows simultaneous two-way 
    transmission, which is most efficient. 
    halfEnter half to support only one transmission direction at a time. 
    						
    							DEFINITY ECS Release 8.2
    Administrator’s Guide  555-233-506  Issue 1.1
    June 2000
    Screen reference 
    1008 Trunk Group 
    17
    Disconnect Supervision-In
    This field indicates whether the switch receives disconnect supervision for 
    incoming calls over this trunk group. It appears when the Direction field is 
    incoming or two-way. (If the Direction field is outgoing, the switch internally 
    sets this field to 
    n.)
    The entry in this field is crucial if you allow trunk-to-trunk transfers. (To allow 
    trunk-to-trunk transfers involving trunks in this group, this field must be 
    y and the 
    Trunk-to-Trunk Transfer field on the Feature-Related System Parameters screen 
    must be 
    y). If a user connects 2 trunks through conference or transfer, and neither 
    far-end switch on the resulting connection provides disconnect supervision, the 
    trunks involved will not be released because DEFINITY ECS can’t detect the end 
    of the call. DEFINITY ECS will not allow trunk-to-trunk transfers unless it 
    believes that at least one party on the call can provide disconnect supervision. 
    Therefore, setting this field incorrectly may cause trunks to become unusable until 
    the problem is detected and the trunks are reset. 
    !CAUTION:
    In general, U.S. central offices provide disconnect supervision for incoming 
    calls but not for outgoing calls. Public networks in most other countries do 
    not provide disconnect supervision for incoming or outgoing calls. Check 
    with your network services provider. 
    Valid entries Usage
    y
    Enter y if (a) the far-end switch sends a release signal when the 
    calling party releases an incoming call, and (b) you want to 
    make the far-end switch responsible for releasing the trunk. 
    This entry allows trunk-to-trunk transfers involving trunks in 
    this group.
    nEnter n if the far-end switch doesn’t provide a release signal, if 
    your hardware can’t recognize a release signal, or if you prefer 
    to use timers for disconnect supervision on incoming calls. 
    Entering 
    n prevents trunk-to-trunk transfers involving trunks in 
    this group. 
    						
    							DEFINITY ECS Release 8.2
    Administrator’s Guide  555-233-506  Issue 1.1
    June 2000
    Screen reference 
    1009 Trunk Group 
    17
    Disconnect Supervision-Out
    This field indicates whether the switch receives disconnect supervision for 
    outgoing calls over this trunk group. It appears when the Direction field is either 
    outgoing or two-way. (If the Direction field is incoming, the switch internally 
    sets this field to 
    n.)
    The entry in this field is crucial if you allow trunk-to-trunk transfers. (To allow 
    trunk-to-trunk transfers involving trunks in this group, this field must be 
    y and the 
    Trunk-to-Trunk Transfer field on the Feature-Related System Parameters screen 
    must be 
    y). If a user connects 2 trunks through conference or transfer, and neither 
    far-end switch on the resulting connection provides disconnect supervision, the 
    trunks involved will not be released because DEFINITY ECS can’t detect the end 
    of the call. DEFINITY ECS will not allow trunk-to-trunk transfers unless it 
    believes that at least one party on the call can provide disconnect supervision. 
    Therefore, setting this field incorrectly may cause trunks to become unusable until 
    the problem is detected and the trunks are reset.
    Also, remember that DEFINITY ECS must receive answer supervision on 
    outgoing analog CO, FX, WATS, Tie, Tandem, and Access trunks before it will 
    recognize a disconnect signal. If this trunk group does not receive answer 
    supervision from the far-end switch, and you enter y in this field, DEFINITY ECS 
    will internally set the field to n. 
    !CAUTION:
    Do not set this field to 
    y unless you are certain that the far-end switch will 
    provide answer supervision and disconnect supervision. Most public 
    networks do not provide disconnect supervision over analog trunks. Check 
    with your network services provider. 
    Valid entries Usage
    y
    Enter y if (a) the far-end switch sends a release signal when the 
    called party releases a call an outgoing call, and (b) you want to 
    make the far-end switch responsible for releasing the trunk. 
    This entry allows trunk-to-trunk transfers involving trunks in 
    this group.
    The Answer Supervision Timeout field must be 
    0 and the 
    Receive Answer Supervision field must be 
    y for the switch to 
    recognize a 
    y entry.
    n Enter n if the far-end switch doesn’t provide a release signal, if 
    your hardware can’t recognize a release signal, or if you prefer 
    to use timers for disconnect supervision on outgoing calls. 
    Entering 
    n prevents trunk-to-trunk transfers involving trunks in 
    this group. 
    						
    							DEFINITY ECS Release 8.2
    Administrator’s Guide  555-233-506  Issue 1.1
    June 2000
    Screen reference 
    1010 Trunk Group 
    17
    Cyclical Hunt
    When a call is offered to a trunk group, the switch searches for an available trunk. 
    This field, which appears when the Direction field is
     two-way and the Trunk Type 
    field is
     loop-start, controls the starting point of the search. 
    You can change this field from 
    n to y at any time. To change from y to n, however, 
    all the trunks in the group must be idle or busied out.
    Disconnect Type
    This field indicates which side or user controls the disconnect, where A refers to 
    the calling party and B refers to the called party. Appears only if the Country field 
    is 
    15 and the Trunk Type field is 2-wire-ac, 2-wire-dc, or 3-wire.
    This applies only to the TN2199 port.
    Send Answer Supervision
    This field appears when the Trunk Signaling Type field is 
    cont or dis and only 
    applies to TN2140 ports.
    Valid entries Usage
    y
     Enter y to have the switch start its search from the last trunk 
    seized. This method is faster, and thus better suited for 
    high-traffic trunk groups.
    nEnter n to have the switch start each search at member 1 (the 
    first trunk administered on the Group Member Assignments 
    page).
    Valid entries Usage
    A and B
    A or B
     
    Valid entries Usage
    y/n 
    Enter y to make your switch signal the calling switch when an 
    incoming call is answered. You can only set this field to 
    y if the 
    Direction field is 
    incoming or two-way. 
    						
    							DEFINITY ECS Release 8.2
    Administrator’s Guide  555-233-506  Issue 1.1
    June 2000
    Screen reference 
    1011 Trunk Group 
    17
    Answer Supervision Timeout
    If the Receive Answer Supervision field is 
    n, use this field to set the answer 
    supervision timer for outgoing and two-way trunks. During a cut-through 
    operation, timing begins after each outgoing digit is sent by the switch and timing 
    ceases after the far-end sends answer supervision. If the timer expires, the switch 
    acts as if it had received answer supervision. On senderized operation, the timer 
    begins after the last digit collected is sent by the switch.
    NOTE:
    This field’s setting does not override answer supervision sent from the 
    network or from DS1 port circuit timers. To control answer supervision sent 
    by DS1 firmware, set the Outgoing End of Dial (sec) field on the 
    Administrable Timers page of the trunk group screen. 
    Receive Answer Supervision
    Use this field to specify whether the network provides answer supervision for a 
    trunk group. 
    For Outbound Call Management applications, set this field to 
    y for trunks 
    supporting network answer supervision. For trunks that do not receive a real 
    answer, this field determines when the CallVisor Adjunct-Switch Application 
    Interface (ASAI) connect event is sent.
    NOTE:
    When you set this field to y, the Outgoing End of Dial (sec) field is not 
    displayed. The firmware timeout on circuit packs controlled by the 
    Outgoing End of Dial (sec) field is automatically set to 
    0.
    Valid entries Usage
    0
     to 250Enter the number of seconds you want the switch to wait before 
    it acts as though answer supervision has been received from the 
    far-end. Set this field to 
    0 if Receive Answer Supervision is y.
    Valid entries Usage
    y
    Enter y if the network provides answer supervision. Set the 
    Answer Supervision Timeout field to 
    0.
    n 
    Enter n if the network does not provide answer supervision, 
    and set the Answer Supervision Timeout field. Also enter 
    n for 
    incoming trunk groups. 
    						
    							DEFINITY ECS Release 8.2
    Administrator’s Guide  555-233-506  Issue 1.1
    June 2000
    Screen reference 
    1012 Trunk Group 
    17
    Field descriptions for page 2
    The figure below shows a common configuration for page 2 of the Trunk Group 
    screen when the Group Type field is 
    co. This screen is only an example, and the 
    fields shown below may change or disappear according to specific field settings.
    Screen 211. CO Trunk Group
    !CAUTION:
    Customers: Do not change fields on this page without assistance from 
    Lucent Technologies or your network service provider.
    ACA Assignment 
    Valid entries Usage
    y/n
    Enter y if you want Automatic Circuit Assurance (ACA) 
    measurements to be taken for this trunk group. If 
    y is entered, 
    complete the Long Holding Time, Short Holding Time, and 
    Short Holding Threshold fields.
    add trunk-group next Page 2 of x
    TRUNK FEATURES
             ACA Assignment? _ Measured: ____
    Maintenance Tests? _
    Data Restriction? _
      Abandoned Call Search? _
      Suppress # Outpulsing? _
    Charge Conversion: _____
    Decimal Point: ______
    Currency Symbol: ___
    Charge Type: _______ Receive Analog Incoming Call ID: ________
    Per Call CPN Blocking Code: ___
    Per Call CPN Unblocking Code: ___
    MF Tariff Free? _
    Outgoing ANI: _______________ 
    						
    							DEFINITY ECS Release 8.2
    Administrator’s Guide  555-233-506  Issue 1.1
    June 2000
    Screen reference 
    1013 Trunk Group 
    17
    Measured
    Indicates if the system will transmit data for this trunk group to the Call 
    Management System (CMS). You cannot use 
    internal and both unless either the 
    BCMS (Basic) or the VuStats field is 
    y on the System-Parameters 
    Customer-Options screen. If the ATM field is set to 
    y on the System-Parameters 
    Customer-Option screen, this field accepts only 
    internal or none. If this field 
    contains a value other than 
    internal or none when ATM is y, none appears.
    Long Holding Time (hours)
    This field appears only when the ACA Assignment field is 
    y.
    Internal Alert
    Maintenance Tests
    Valid entries Usage
    internal
    Enter internal if the data can be sent to the Basic Call 
    Management System (BCMS), the VuStats data display, or 
    both.
    externalEnter external to send the data to the CMS.
    bothEnter both to collect data internally and to send it to the CMS.
    none Enter none if trunk group measurement reports are not 
    required.
    Valid entries Usage
    0
     to 10Enter the length of time (in hours) that the system will consider 
    as being a long holding time. If you enter 
    0, the system will not 
    consider long holding calls.
    Valid entries Usage
    y/n 
    Enter y if internal ringing and coverage will be used for 
    incoming calls.
    Valid entries Usage
    y/n 
    Enter y if hourly maintenance tests will be made on this trunk 
    group. Your entry is not saved when the screen is submitted 
    unless one or more trunk members are administered. 
    						
    							DEFINITY ECS Release 8.2
    Administrator’s Guide  555-233-506  Issue 1.1
    June 2000
    Screen reference 
    1014 Trunk Group 
    17
    Short Holding Time (seconds)
    This field appears when the ACA Assignment field is 
    y.
    Data Restriction
    Short Holding Threshold
    This field appears when the ACA Assignment field is 
    y.
    Glare Handling
    This field determines what the switch will do when glare occurs. This field 
    appears when the Direction field is 
    two-way and the outgoing side of the Trunk 
    Type field is either 
    …/wink or …/delay.
    If you enter 
    control or backoff, and ports for the trunk group are not capable of 
    detecting glare, warnings are generated. The following circuit packs can detect 
    glare: TN767 (all releases), TN760C (or later releases), and TN464C (or later 
    releases).
    Valid entries Usage
    0
     to 160Enter the length of time (in seconds) that the system considers 
    as being a short holding time. If 
    0 is entered, the system will 
    not consider short holding calls. 
    Valid entries Usage
    y/n 
    Enter y to prevent features from generating tones on a data 
    call that would cause erroneous data transmission.
    Valid entries Usage
    0
     to 30Enter the number of times the system will record a short 
    holding call before alerting an attendant to the possibility of a 
    faulty trunk. 
    Valid entries Usage
    control
    Your switch will seize the trunk and proceed with call setup. 
    The other switch will find another trunk.
    backoffThe other switch will seize the trunk proceed with call setup. 
    Your switch will find another trunk.
    none  
    						
    							DEFINITY ECS Release 8.2
    Administrator’s Guide  555-233-506  Issue 1.1
    June 2000
    Screen reference 
    1015 Trunk Group 
    17
    Abandoned Call Search
    Use this field when the Trunk Type field is ground-start. Abandoned Call Search 
    is designed to work with analog ground-start CO trunks that do not provide 
    disconnect supervision. Your central office must support Abandoned Call Search 
    for the feature to work properly. If your central office provides disconnect 
    supervision, you do not need to use the Abandoned Call Search feature. 
    Used for DCS
    NOTE:
    This field cannot be activated if the trunk group number is greater than 255 
    or if the Trunk Access code is more than 3-digits long.
    If this field is 
    y, you can administer ISDN-BRI trunk groups unless the DCS 
    Signaling field is 
    d-chan. In that case, remove the BRI trunks or set the DCS 
    Signaling field to 
    bx.25 before submitting the screen.
    PBX ID
    This field, which appears when the Used for DCS field is 
    y, identifies the remote 
    switch in the network with which the trunk will communicate on a DCS signaling 
    link.
    Suppress # Outpulsing
    Valid entries Usage
    y/n 
    Enter y if this trunk group will conduct an Abandoned Call 
    Search to identify ghost calls.
    Valid entries Usage
    y/n 
    Enter y if this trunk group will send and receive messages on a 
    DCS signaling link.
    Valid entries Usage
    1
     to 63Enter the ID of the switch at the other end of this trunk.
    Valid entries Usage
    y/n 
    Enter y if end-to-end signaling begins with (and includes) “#”. 
    The final “#” is suppressed in cases where the system would 
    normally outpulse it. This field should be 
    y when the Central 
    Office (for example, rotary) or any other facility treats “#” as 
    an error. 
    						
    							DEFINITY ECS Release 8.2
    Administrator’s Guide  555-233-506  Issue 1.1
    June 2000
    Screen reference 
    1016 Trunk Group 
    17
    Seize When Maintenance Busy
    This field only affects ports on TN760C (or later release), TN767, and TN464C 
    (or later release) circuit packs. It indicates whether this switch generates an 
    outgoing seizure when a trunk in this trunk group is maintenance busied and 
    whether the far-end switch is administered to do likewise. This supports the 
    Electronic Tandem Network Busyout feature, which is intended to prevent a 
    far-end switch from reporting problems with a trunk that has been removed from 
    service on your switch. This field’s setting does not affect the behavior of the 
    far-end switch; it controls the behavior of this switch and defines the expected 
    far-end behavior.
    For DIOD trunks using TN464F (or later release) or TN2464, displays only when 
    the Group Type field is 
    diod and the Trunk Signaling Type field is pulsed, cont, 
    or 
    dis.
    If a switch generates an outgoing seizure when a trunk is busied out, the seizure 
    will probably cause alarms at the far-end switch, perhaps leading to a far-end 
    maintenance busy out, unless the far-end switch is administered to expect this 
    behavior.
    If the administered value of this field is either 
    far-end or both-ends, any 
    abnormally long incoming seizure (including failure to drop from a completed 
    call) is assumed to be the result of a far-end maintenance busy condition. Note 
    that this assumption may be incorrect, since the abnormally long seizure may 
    actually be due to failure of the trunk circuit. Regardless of the cause of the 
    abnormally long seizure, your switch does the following things:
    1. Generates a warning alarm indicating that the trunk is assumed to be 
    maintenance busy at the far-end
    2. Removes the trunk from service
    3. Keeps the trunk out of service until a far-end disconnect is received
    Allowable values depend on the entry in the Direction field: check the online help 
    in the switch administration software.
    Valid entries Usage
    near-end
    Enter near-end if this switch generates an outgoing seizure 
    when a trunk is maintenance busied but the far-end switch 
    does not. The seizure is maintained until the maintenance 
    busyout is released.
    far-endEnter far-end if the far-end switch generates an outgoing 
    seizure when a trunk is maintenance busied but this switch 
    does not.
    both-endsEnter both-ends if both this switch and the far-end switch 
    generate an outgoing seizure when a trunk is maintenance 
    busied. 
    						
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