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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 
    1327 Distinctive Ringing 
    20
    Distinctive Ringing
    Distinctive Ringing provides several ringing cycles to help telephone users and 
    attendants distinguish between incoming call types. Administer Distinctive 
    Audible Alerting on Feature-Related System Parameters for internal, external, 
    priority, and attendant originated calls. 
    If the phone is a single-line analog, you have to set this on the Station screen for 
    each user.
    Detailed description
    You can administer system-wide distinctive-ringing cycles for the three basic call 
    types. Most installations use 1-burst for internal calls, 2-burst for external calls, 
    and 3-burst for priority calls. There are also non-administrable ringing signals for 
    Automatic and Dial Intercom calls, Manual Signaling, and Redirect Notification. 
    Normally if an internal phone user transfers an external call, the call rings as 
    internal. You can set a feature parameter (Update Transferred Ringing Pattern) to 
    make the call ring as an external call. 
    Considerations
    nIf Distinctive Ringing is disabled, the system generates a 1-burst repetitive 
    tone for all incoming calls. This is useful for equipment interfaced by 
    analog lines, especially if you use off-premises station.
    nA single distinctive ring cycle is used for each new incoming call to an 
    off-hook telephone or headset. The system alerts a CALLMASTER 
    terminal with a single ring cycle whenever either the headset or the handset 
    is plugged into the headset jack.
    Interactions
    nPersonalized Ringing
    The called party hears the user-selected ringing pattern for the distinctive 
    ring cycles. 
    						
    							DEFINITY ECS Release 8.2
    Administrator’s Guide  555-233-506  Issue 1.1
    June 2000
    Features and technical reference 
    1328 DS1 Trunk Service 
    20
    DS1 Trunk Service
    Digital Signal Level 1 (DS1) trunk service uses bit-oriented signaling (BOS) and 
    multiplexes 24 channels (T1 service) or 32 channels (E1 service) into a single data 
    stream. DS1 can be used for voice or voice-grade data and for data-transmission 
    protocols. T1 trunk service multiplexes 24 channels into a single 1.544-Mbps data 
    stream. E1 trunk service multiplexes 32 channels into a single 2.048-Mbps 
    stream. Both T1 and E1 provide a digital interface for trunk groups. 
    For information about how to administer DS1 with enhanced administration, refer 
    to ‘‘
    Signaling modes’’ on page 1330.
    Brief description
    DS1 trunk service provides a digital interface for the following trunks.
    nVoice-grade DS1 tie trunks
    nAlternate voice/data (AVD) DS1 tie trunks
    nRobbed-bit AVD (RBAVD) DS1 tie trunks 
    nDigital Multiplexed Interface (DMI) tie trunks
    nISDN-PRI trunks 
    nCentral Office (CO) trunks 
    nForeign Exchange (FX) trunks
    nRemote-access trunks
    nWide Area Telecommunications Service (WATS) trunks
    nDirect Inward Dialing (DID) trunks
    nMain/Satellite tie trunks
    nTie trunks that link Common-Control Switching Arrangement (CCSA) or 
    Enhanced Private Switched Communications Service (EPSCS) networks
    nRelease-link trunks for Centralized Attendant Service (CAS)
    nAccess trunks
    nOff-premises stations (also known as station-side DS1)
    nAccess endpoints
    DS1 also provides the following functions in public and private networks:
    nElectronic tandem networks (ETN) or tandem tie-trunk networks (TTTN)
    nDirect access to local exchange carriers 
    						
    							DEFINITY ECS Release 8.2
    Administrator’s Guide  555-233-506  Issue 1.1
    June 2000
    Features and technical reference 
    1329 DS1 Trunk Service 
    20
     DS1 operational and signaling parameters
    The table below provides the recommended combination of parameters for each 
    DS1 interface.
    DS1 
    Circuit 
    Packs # Trunk 
    MembersBit Rate 
    Mbps CompandingSignaling 
    Mode Trunk Type
    1
    TN722 1-23 1.544 mulaw common-chan Tie, 
    DMI-BOS, 
    CO
    2
    1-24 robbed-bit Tie
    TN722B 1-23 1.544 mulaw common-chan Tie, 
    DMI-BOS, 
    CO
    2
    1-24 robbed-bit CO/DID/Tie
    TN767D, 
    E
    31-23 1.544 mulaw common-chan Tie, 
    DMI-BOS, 
    C0
    2
    1-24 robbed-bit CO/DID/Tie
    1-23 (24th 
    is D-chan)isdn-pri
    4ISDN
    1-24 isdn-ext
    4ISDN
    TN464B
    51-30 2.048 alaw/mulaw6CAS CO/DID/Tie
    1-31 alaw isdn-pri
    4ISDN
    1-31 isdn-ext
    4ISDN
    1-23 1.544 mulaw common-chan Tie, 
    DMI-BOS, 
    CO
    2
    Continued on next page 
    						
    							DEFINITY ECS Release 8.2
    Administrator’s Guide  555-233-506  Issue 1.1
    June 2000
    Features and technical reference 
    1330 DS1 Trunk Service 
    20
    Signaling modes
    Common-channel signaling (CCS) is an industry-standard technique where any 
    one of a group of channels carries the signals for the other channels. Lucent 
    Technologies uses the 24th channel of a group for signaling. This signaling 
    technique differs from 24-channel signaling. When the system is configured for 
    Facility-Associated Signaling, 24-channel signaling uses the 24th channel in a 
    DS1 facility to carry signals. This technique also is called clear channel, 
    out-of-band, or alternate voice data (AVD) signaling. TN464C, 
    D, E, F
    3, 
    and 
    TN24641-24
    1-23 (24th 
    is D-chan)
    1-31 (16th 
    is D-chan)
    1-24
    1-31
    1-301.544
    4
    2.048
    1.544
    4
    2.048
    2.048alaw/mulaw
    alaw/mulaw
    alaw/mulawrobbed-bit
    isdn-pri
    4
    isdn-ext4
    CASCO/DID/Tie
    ISDN
    ISDN
    ISDN
    CO/DID/Tie
    TN2242 1-30
    1-30
    7
    2.048
    2.048alaw/mulaw
    alaw/mulawCAS
    isdn-priTie
    ISDN
    1. CO is any of the following trunk types: CO, FX, WATS.
    Tie is any of the following trunk types: access, tie, tandem, RLT, APLT.
    2. Common-channel DS1 circuit packs used in CO trunk groups must have a trunk type of auto.
    3. Integrated CSU functionality is available only with the TN767D and TN464E or later-suffix DS1
    circuit packs. Enhanced ICSU functionality is available only with TN767E, TN464F, and
    later-suffix DS1 circuit packs.
    4. Mixed-mode signaling is allowed. This means that if the signaling mode is isdn-ext or isdn-pri, a
    port from that circuit pack may be used in any trunk group that allows robbed-bit signaling.
    5.The TN464B’s companding is based upon the system companding that you administer.
    6. ISDN-PRI calls are not guaranteed to work for the TN464B if the system’s companding is set to
    mu-law.
    7. The administered D-channel on the DS1 screen for ISDN-PRI cannot be a trunk group member.DS1 
    Circuit 
    Packs # Trunk 
    MembersBit Rate 
    Mbps CompandingSignaling 
    Mode Trunk Type
    1
    Continued on next page 
    						
    							DEFINITY ECS Release 8.2
    Administrator’s Guide  555-233-506  Issue 1.1
    June 2000
    Features and technical reference 
    1331 DS1 Trunk Service 
    20
    Channel Associated Signaling (CAS) is similar to common-channel signaling and 
    is used only when the Bit Rate is 2.048 Mbps (the trunk is used with an E1 
    interface). Signaling is carried on the 16th channel.
    Common-channel signaling and channel associated signaling provide a maximum 
    transmission rate of 64 Kbps for bearer channels.
    Robbed-bit signaling is a per-channel signaling technique for transmitting 
    signaling bits on each channel in a DS1 facility. The least-significant bit in every 
    6th transmitted information frame is removed and replaced by a signaling bit. This 
    technique is also called in-band signaling. The maximum transmission rate for 
    each bearer channel with robbed-bit signaling is 56 Kbps.
    ISDN-PRI signaling is carried on the 24th channel for a 1.544 Mbps connection 
    and on the 16th channel for a 2.048 Mbps connection.
    Public network signaling administration for ISDN-PRI Layer 3
    The table below shows DEFINITY ECS public network access connections for 
    ISDN-PRI Layer 3.
    Admin 
    value Country Protocol supportedB-channel 
    mtce msg
    1 - a United States, 
    CanadaAT&T TR 41449/ 41459 (tested with AT&T 
    network, Canadian network, and MCI 
    network)Service
    1 - b United States  Bellcore TR 1268;
    NIUF.302; ANSI T1.607Restart
    1 - c United States NORTEL DMS-250 BCS36/IEC01 Service
    2a Australia AUSTEL TS014.1;
    Telecom Australia TPH 1856 National ISDN 
    protocolRestart
    2b Australia ETSI ISDN protocol Restart
    3 Japan NTT INS-NET Restart
    4 Italy ETS 300 102 Restart
    5 Netherlands ETS 300 102 Restart
    6 Singapore ETS 300 102 Restart
    7 Mexico ETS 300 102 Restart
    Continued on next page 
    						
    							DEFINITY ECS Release 8.2
    Administrator’s Guide  555-233-506  Issue 1.1
    June 2000
    Features and technical reference 
    1332 DS1 Trunk Service 
    20
    8 Belgium ETS 300 102 Restart
    9 Saudi Arabia ETS 300 102 Restart
    10 - a United 
    KingdomETS 300 102 (for connection to DASS 
    II/DPNSS through external converter)Restart
    10 - b United 
    Kingdom, 
    IrelandETS 300 102 (Mercury); British Telecom 
    ISDN 30; Telecom Eireann SWD 109none
    11 Spain Telefonica ISDN Specification Restart
    12 - a France  VN4 (French National PRI) None
    12 - b France  ETS 300 102 modified according to P10-20, 
    called EuronumerisNone
    13 - a Germany FTZ 1 TR 6 (German National PRI) None
    13 - b Germany ETS 300 102 Restart
    14 Czech 
    Republic, 
    SlovakiaETS 300 102 Restart
    15 Russia (CIS) ETS 300 102 Restart
    16 Argentina ETS 300 102 Restart
    17 Greece ETS 300 102 Restart
    18 China ETS 300 102 Restart
    19 Hong Kong ETS 300 102 Restart
    20 Thailand ETS 300 102 Restart
    21 Macedonia ETS 300 102 Restart
    22 Poland ETS 300 102 Restart
    23 Brazil ETS 300 102 Restart
    24 Nordic ETS 300 102 Restart
    25 South Africa ETS 300 102 Restart
    ETSI - a Europe, New 
    Zealand, etc.ETS 300 102 Restart
    ETSI - b ETS 300 102 None
    Admin 
    value Country Protocol supportedB-channel 
    mtce msg
    Continued on next page 
    						
    							DEFINITY ECS Release 8.2
    Administrator’s Guide  555-233-506  Issue 1.1
    June 2000
    Features and technical reference 
    1333 Emergency Access to the Attendant 
    20
    Emergency Access to the Attendant
    Emergency Access to the Attendant alerts an attendant if a telephone remains 
    off-hook for more than the administered period of time. It also enables a user to 
    place an emergency call to an attendant.
    Detailed description
    Emergency calls can be placed automatically by the system or dialed by system 
    users. Such calls can receive priority handling by the attendant.
    Place emergency calls to the attendant in the following ways:
    nAutomatically by the system
    Assign a telephone the Off-Hook Alert option via class of service (COS). If 
    the terminal is left off-hook until intercept timeout, the (administrable) 
    off-hook alerting timer starts. If the terminal is still off-hook when the 
    timer expires, an emergency call is automatically placed to the attendant.
    nDial access by a system user
    A user can place an emergency call to the attendant by dialing the 
    Emergency Access to the Attendant feature-access code.
    When an emergency call is placed, one of the available attendants receives visual 
    and audible notification of the call. If all attendants are busy, the call enters a 
    queue for emergency calls. Calls can be administered to redirect to another 
    extension if the queue is full.
    An emergency call causes the following to occur:
    1. The system selects the first available attendant to receive the call.
    2. The attendant hears the emergency tone and sees the lamp associated with 
    the Emergency button, if assigned, light. If the console does not have 
    emergency-tone capability, the attendant hears normal ringing and sees the 
    display flash.
    3. The attendant display shows:
    — Calling-party identification
    — Calling-party extension 
    — How many emergency calls remain in queue
    An audit record is created for each emergency call. This record includes:
    nExtension where the call originated
    nThe attendant or attendant group that answered the call 
    						
    							DEFINITY ECS Release 8.2
    Administrator’s Guide  555-233-506  Issue 1.1
    June 2000
    Features and technical reference 
    1334 Emergency Access to the Attendant 
    20
    nTime of the call 
    nThe following known call results:
    — Call Completed — Call answered at attendant or listed directory 
    number (LDN) night extension.
    — Queue Full — Emergency-access queue is full; tries to redirect the 
    call to an emergency-access redirection extension.
    — No Attd — No active attendants are available to receive the call; 
    tries to redirect the call to an emergency-access redirection 
    extension.
    — Redirected Answered — Call is answered by the emergency-access 
    redirection extension.
    — No Redirection Ext. — Could not redirect the call to the 
    emergency-access redirection extension because none are 
    administered.
    — Attd Night Service — System is in night service. Will try to redirect 
    the call to attendant night service.
    — Failed — Caller drops the call before it can be answered. Call was 
    either waiting in the attendant emergency queue, ringing at an 
    attendant console, or ringing at the LDN night extension.
    — Redirected Abandoned — Caller drops the call before it can be 
    answered. Call had been redirected to the emergency-access 
    redirection extension.
    You can generate an Emergency Access Summary Report of the emergency audit 
    records. Schedule the report for printing once a day at a designated printer. If the 
    switch has a journal printer Emergency Access to the Attendant audit records print 
    as the calls occur.
    You can monitor emergency-access calls by displaying them at the administration 
    terminal. The command for listing emergency call events is 
    list emergency. You 
    can use a from and to time option with the command. For example, if you enter 
    the command 
    list emergency 8:00am 12:00pm, the report shows emergency call 
    events that occurred during that interval.
    Considerations
    nThe emergency tone cannot be silenced except by answering the 
    emergency call.
    nThe system should have at least one day and one night attendant (or night 
    service station) for this feature to be useful at all times. 
    						
    							DEFINITY ECS Release 8.2
    Administrator’s Guide  555-233-506  Issue 1.1
    June 2000
    Features and technical reference 
    1335 Emergency Access to the Attendant 
    20
    Interactions
    nCentralized Attendant Service
    For a branch with CAS in effect, an emergency call reroutes to the branch 
    attendant group. If the branch does not have an attendant or if the branch is 
    not in CAS Backup Service, the call is denied.
    If the branch PBX is in CAS Backup Service, an emergency call routes to 
    the backup position and is handled as any other non-emergency call.
    nCOR 
    An emergency call to the Attendant overrides all restrictions on the COR.
    nIndividual Attendant Access
    An emergency call cannot be placed to an individual attendant.
    Emergency calls have priority over other calls to an individual attendant, 
    only if they are assigned a higher priority on the Console Parameters form.
    nInter-PBX Attendant Service
    For branches with Inter-PBX Attendant Service in effect, an emergency 
    call reroutes to the local attendant group. If the branch does not have an 
    attendant or if the attendant is not on duty, the call is denied.
    nNight Service
    When Night Service is in effect, emergency calls route to the night 
    destination. Such calls are included on the Emergency Audit Record, and 
    the call is designated as Emergency Night in the audit trail.
    When an attendant is in night service, you must assign either a night station 
    or a redirect extension. Otherwise emergency calls to the night attendant 
    hear a busy tone.
    nOff-Hook Alerting automatically places an emergency call to the attendant.
    nPriority Queue
    You can change the priority of emergency calls to equal or lower than that 
    of other types of calls.
    nRemote Access
    An emergency call cannot be placed through Remote Access.
    nRestriction — Controlled
    An emergency call overrides any controlled restriction. 
    						
    							DEFINITY ECS Release 8.2
    Administrator’s Guide  555-233-506  Issue 1.1
    June 2000
    Features and technical reference 
    1336 Emergency Transfer 
    20
    Related screens 
    nClass of Service (Off-Hook Alert)
    nConsole Parameters
    — Queue Priorities 
    nFeature-Related System Parameters
    — Reserved Slots for Attendant Priority Queue
    — Time before Off-Hook Alert
    — Emergency Access Redirection Extension
    nHospitality 
    — Extension of Journal/Schedule Printer
    — Time of Scheduled Emergency Access Summary Report
    nAttendant Console - Feature Button Assignments
    — em-acc-att
    nFeature Access Code (FAC)
    — Emergency Access To Attendant Access Code
    Emergency Transfer
    Emergency Transfer provides service to and from the local telephone company 
    central office (CO) during a power failure or when service is impaired. 
    Emergency Transfer is also called Power Failure Transfer; the terms are 
    synonymous.
    Detailed description
    Emergency Transfer allows analog telephones (500- or 2500-type) to access the 
    local CO and to answer incoming calls during a power failure.
    Each DEFINITY ECS cabinet supports Emergency Transfer panels via the AUX 
    connectors on the rear panel. The transfer is initiated when:
    na transfer panel or associated cabinet loses power.
    nsomeone manually activates the Emergency Transfer switch on the 
    associated maintenance circuit pack
    nthe software determines that service for that cabinet is severely impaired
    You cannot activate any other system features during a complete system power 
    failure. 
    						
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