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Trillium Panther 612 Technical Service Manual

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    							      Trillium
          Panther 612
       Electronic Key Telephone System
    Technical Service Manual 
    						
    							3 
    AtoZ KELLATRONICS, INC, 
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    -.-.-. ......... -. ............................... 
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    -_. 
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    Technical 
    Service Table of 
    Manual Contents 
    ........ . -. .......................... _. 
    ..................... ..” ........................................... -. ... 
    .............. -. 
    ....................................... -1.. ........ 
    -. ............................................. 
    ..--..-.............- ............................................ 
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    . ..” 
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    Topic 
    Page 
    Chapter Introduction 
    PREFACE 
    ................................. ................................................................................................................... 
    Intro-l 
    ABOUTTHlSCHAPTER .............................................................................................................................. 
    QUICK-REFERENCE CHART.. Intro- 1 
    ... 
    .......................................................................................... ..[ . 
    ...................... 
    Intro-2 
    Section A 
    - FCC Requirements 
    RADIO AND TELEVISION INTERFERENCE 
    ...................................................................................................... 
    A-l 
    HEARING AID COMPATIBILITY 
    ....................................................................................................................... 
    A-l 
    RES’ONSII3ILITES .............................................................................................. 
    ........................................... A-2 
    User Responsibilities .................................................................................. 
    .................................................. 
    A-2 
    Telco Responsibilities .................................................................. 
    .................................................................. 
    A-2 
    Section B 
    - System Components 
    STANDARD COMPONENTS ......................................................................... 
    ..................................................... 
    B-l 
    One Key Service Unit (KSU) ................................................... 
    ........................................................................ 
    B-l 
    Up to Twelve Telephone Sets.. 
    ....................................................................................................................... B-l 
    OPTIONAL COMPONENTS ................................................................................ 
    ................................................ 
    B-2 
    One Door Answer Unit 
    .................................................................................................................................. B-2 
    Up to Two Power Fail Transfer Units 
    ............................................................................................................... B-2 
    Up to Eleven Off Premises Extension/Data Interface (OPX) units 
    .......................... 
    ................................................ 
    B-2 
    One Station Message Detail Recorder (SMDR) Interface 
    ..................................................................................... B-2 
    Set Stands/Wall-Mounts 
    ............................................. 
    .................................................................................... 
    B-3 
    Designation Cards ............................................................................ 
    ............................................................ 
    B-3 
    Face Plates ............... ..................................................................................... 
    ............................................... 
    B-3 
    Section C 
    - Technical Specifications 
    CONNECl’ORS ................................................................................................................................................. c-1 
    SMDR INTERFACE UN-IT (Optional) 
    ................................................................................................................... C-l 
    ENVIRONMENTALREQUIREMENTS ................................................................ 
    ................................................ c-2 
    POWERREQUlREMENTS 
    .................................................................................................................................. c-2 
    STATION NUMBERING PLAN 
    ........................................................................................................................... c-2 
    SYSTEM CAPABILITIES 
    ................................................................................................................................... 
    c-2 
    > . . . . . . . . . . . . . . “...... . . . . . . *.** . . . . *.......- .  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * . . . . - . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ......................... * .........................................-.................................-............-.....................,.... 
    . . . . . . . . . . . . . . . . *..a.** . . 
    . . . . . . . . *...*...* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..* . . . . . . . . . . . * . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .....................--..........................................-.......................... TRILLIUM I 
    Telephone Panther 6 12 
    Systems Page i 
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . “- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
    . . . . . . . . . . . . . . . . . . . . . . . * . . . . . . . . . . . . . . . . . . . . . . . . . . . s . . . . . . . . . . . . . . . . . s . . . . . . . . . , . . . . . . . . * . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . ................,........................” ........... “..“_” 
    ..,....................,.................... “..” .......,.......,..... ..................-....... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
    						
    							Table of 
    Contents Technical 
    Servic- 
    Manu : _ ..................... ..-..- .................................................... -- ................................ . . 
    ............... 
    ... . ......... . . ........... -.** .................... ......... . . . ......... ....... -. ......................................... ... . . ... -. ............................................................. 
    -. . . . ... . ..................................................... :::::::::::::::::::::::::x::“:‘-:::::::::::: :::: ‘-~: 
    Topic 
    Page 
    Section D 
    - Connection Procedures 
    STEP 1: INSTALLlNG THE KSU 
    ................................................................................................................... 
    D-l 
    Site Preparation. ........................................................................................................................................... 
    D-l 
    Backboard Installation ......................................................................................... 
    .......................................... D-l 
    ~~System unclating .......................................................................................................................................... 
    D-l 
    KSU Installation ........f 
    .................................................................................................................................. D-l 
    STEP 2: CONNECTING INCOMING TELEPHONE LINES 
    ................................................................................ 
    D-2 
    STEP 3: INSTALLING STATION WIRING 
    ..................................................................................................... 
    D-2 
    Station Wiring Table ..................................................................................................................................... 
    D-3 
    STEP 4: CONDUCTING THE INITIAL SYSTEM AND STATION TESTS 
    ........................................................... D-5 
    STEP 5: CONNECTING THE BACKUP BATTERY 
    .......................................................................................... 
    D-5 
    STEP 6: CONNECTING DOOR ANSWER UNIT AND DOOR MODULES 
    ........................................................... D-6 
    Door Answer Unit Installation ................................................................................ 
    ......................................... 
    D-6 
    Door Module Installation ........................................................................................ 
    ........................................ 
    D-6 
    DoorAnswerUnitTest.. .................................................................. 
    ............................................................. 
    D-7 
    STEP 7: CONNECI’ING THE MUSIC SOURCE 
    ............................................................................................... 
    D-8 
    Music Connection 
    ......................................................................................................................................... 
    D-8 
    Music Test.. 
    ........................................................................... 
    ...................................................................... 
    D-8 / 
    STEP8: CONNEC’l.ING THE EXTERNAL PAGING EQUIPMENT 
    ..................................................................... 
    D-9 
    Equipment Connection ................................................................................................................................... 
    D-9 ’ 
    Paging Test.. 
    ................................................................................................................................................ 
    D-9 / 
    STEP 9: CONNECTING AN EXTERNALLOUDBELL 
    ..................................................................................... 
    D-9 
    muipment Connection 
    ................................................................................................................................... 
    D-9 
    Loud Bell Test. 
    ............................................................................................................................................. D-9 
    STEP lo: CONNECIING THE OPX UNlT 
    .................................................................................................... . .. 
    D-10 
    OPX Unit Connection ................................................................................................................................. 
    D-10 
    OPX Unit T est. ........................................................................................................................................... 
    D-10 
    STEP 11: CONNECTING THE SMDR INTERFACE UNIT 
    ................................................................................. D-11 
    SMDR Interface Unit Installation 
    .................................................................................................................. D-11 
    SMDR Interface Unit Test ........................................................................................................................... 
    D-11 
    SMDR Printout Formats ............................................................................................................................... 
    D-11 
    STEP 12: 
    CONNECl-INGTHEPOWERFAILTRAN!WERuNITS . . . ................................................................... 
    D-12 
    Power Fail Transfer Unit Installation ............................................................................................................... 
    D-12 
    Power Fail Transfer Unit Tes t. 
    ....................................................................................................................... 
    D-13 
    STEP 13: INSTALLJNGANEXTERNALAMPLIFIER 
    ...................................................................... . ............... D-14 
    TRILLIUM 1). 
    Telephone 
    Systems  
    						
    							Technical 
    Service 
    “2 Manual Chapter 
    Introduction 
    ;r ................................. . 
    ................................. -. .................................................................................................................................................. .................................................................................... .“. ........................................................ ..- 
    ..- ................................ ................................ ::::::::‘-:: :::::::::::::::::::::::::::::::::: 
    PREFACE 
    The Panther 612 Electronic Key Telephone System is a 
    state-of-the-art system that incorporates sophisticated elec- 
    tronics to meet ti communications needs of today’s home, 
    office, and small business user. 
    It’connects six outside telephone lines (only five if the op 
    tional Door Answer Unit and Door Modules are installed) 
    with up to twelve station Sets- which are all wired in a 
    star configuration Both a tone only key service unit (KSU) 
    and a tone/rotary KSU are available. Also, both Handsfree 
    and Non-Ham&free Sets are available; the Handsfree Sets 
    also include Busy Lamp Field (BLF) indicators that show 
    the status of all system stations. 
    Common and private speed call numbers, call transferring, 
    door answering (with optional Door Answer Unit and Door 
    Modules), internal monitoring, conferencing (up to 3 par- 
    ties), internal intercom paging (station-to-station, zone, and 
    all page paging), external loudspeaker paging, call detail and 
    account code recording (through an optional SMDR inter- 
    face unit), and last number redialing are just some of the 
    many features offered. 
    The attractive, well-designed system makes feature pro- 
    gramming and operation very easy. In addition, the Panther 
    system is designed to allow easy interfacing with modems 
    and answering devices through an optional OPX device. 
    The fully sealed Panther 612 Electronic Key Telephone 
    System may be installed in either a standalone mode or be- 
    hind a CENTREX or PBX. The microprocessor-controlled 
    circuitry operates all system communications and the flexi- 
    ble programming. 
    An optional external backup 24 V battery can be connected 
    to the system; the backup battery is automatically brought 
    on line in the event of a power failure, thus preventing inter- : 
    ruptions in telephone service. 
    Also, in the event of a total system failure, incoming lines 
    will be transferred to standard sets if optional Power 
    Transfer Units have been installed in the system. > . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ................................ 
    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . **.CI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .....................................................-................................................ ” ....................... _,  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
    I 
    TRILLIUM 
    Telephone 
    Panther 6 12 
    Systems Page Intro- 1 
    ABOUT THIS CHAPTER 
    This chapter has also been designed specifically to enable 
    technicians to install, operate, and maintain the Panther 612 
    Electronic Key Telephone System. Information is presented 
    in a logical order, without undue wordiness - to help the 
    technician find, understand, and use the relevant informa- 
    tion, quickly and easily. 
    Therefore, for example, the Connection Procedures are sep 
    arated into concise steps that have a logical and necessary 
    sequence; and reference material (Technical Specifications, 
    Feature Programming, 
    Operating Instructions, and 
    Troubleshooting) is presented in a variety of easy-to-follow, 
    visible-at-a-glance tabular formats. 
    To acquaint yourself with this chapter, please review the 
    Table of Contents and spend a few moments browsing 
    through the different sections. 
    CAUTION 
    Panther equipment is sealed. Breaking the seal 
    will void your warranty. 
    If you have an installation, operation, or troubleshooting 
    problem that you cannot solve by using this chapter (and 
    that your dealer cannot help solve), call TRILLIUM 
    Customer Service at l-800-848-2444 (inside California, call 
    l-800422-7600). 
    NOTE 
    For your ready reference, a chart summarizing 
    indicator signals appears on the back of this 
    page.  
    						
    							. . . . . . . . . 
    . . . . . . . . . . --.~ . . . . . I . 
    . . I.... . . . . . ..-............................................... 
    . . . . . . . . . . . . . . . . . . “_...I . . . . . . . . . . . . . . . . . . . “” . . . . . - . . . . . . . . , . . ...” . . . . . . . . . . 
    . . . . ...” . . . . . - . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
    . . . . . . . . . . 
    . . “.” . . . . . . . . . . . . .  -.a . . . . - . . . . . . * . . . . . . . . . . . . . . . . . . . . * . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..-............... k.. 
    . . . . . . . . . . . . * . . . . . . . . . . ....” ....................................................: ..._._._....._._.. I ......:..-  . . . . . . ..-.-_..................... __._ 
    Chapter Technical 
    Introduction 
    Servic’ -.; 
    Maw j ................ ..-- .............. 
    ...... ..-. ..... ...“. .............. -.  I.. 
    ..................................................  ........................................................................................................................................................................... 
    . 
    ................................ . 
    ........................................ . . 
    ..- ......................................... . ... 
    . ...:::::: “‘“~::“==: ::::::::: ::: :::::::::::::: :” 
    QUICK-REFERENCE CHART 
    The Panther 612 Electronic Key Telephone System lets 
    users lmow what is happening with calls and lines through a 
    series of indicator patterns. These indications are summar- 
    ized in the chart on this page. Specific indications are 
    desqibed at the appropriate places throughout the procedu- 
    ral material in this chapter. 
    Lim h&atorActbn 
    Lhestatus 
    lhehuseam 
    - mdsiv.hokl* 
    inauapkn . . . . . . . . . . . . . . 
    . . . . . . . . ..1.*.......1.- . . . . . . . u  . . . . . . . . . - . . . . . . . . . . . . “m” . . . . . . , . . . . . . . . . . . . . . . . . . . . . . ...” . . . . . . . . . . . I . . . . . . . . . . . . . . . . . ...” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..-.......... *...* . . .........................-....-...........--..” ........._.” ........ 
    . . . . ..“..--“.“*...-..“-~-.-..“.* . . . . . . . . . . . . . . . . . ““..‘+” . . . . . . . . “.._.,“...I...” . . . . . . . . I . . . . . ..._.” . . . . . ...” . . . .._._ “.._ _...........,,... 
    ..__..-_ 
    Panther 6 12 %i LLIUM __ ) 
    Page Intro-2 
    Telephone 
    Systems . . . . . . . - . . . . . . . . . ..“I_” . . . . . ..“...rn . . . . . I . . . . . . . .  . . . . . . -“..I . . . . . ..-........-................-.................................................................................. ” . . . . . . .._.....” . . . ..-...................” . . . . . . .._...........................-..............--............. ” . . . . . . . . . . . . . 
    . . . . . . I . . . . . -“..- . . . . . -.- . . . . . I . . . . . . . . . . . . . _.“I . . . . . . . I .I....... _ .-.........-.. “.“__ -.,._. *...*-._” . . .._..._. “..” __....... “.” . . . . . . . “.“.. 
    .  
    						
    							::::::::::::::::::::::::::::::::::::::::::::::i :::............ , . . . . . . . . , . . . . . . . . . . . . . . . . . _ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .......................................... I ........................................... 
    . . . . . . * . . . . . . . . . . . - . . . . . . . . . . . . . . . . . - . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ................................................. .........................................., 
    Technical 
    Service FCC 
    Manual 
    i Requirements 
    RADIO AND TELEVISION 
    INTERFERENCE 
    WARNING 
    The Panther 612 Electronic Key Telephone 
    System generates and uses radio-frequency en- 
    ergy and - if not installed and used in strict 
    accordance with these instructions - may 
    cause interference to radio and television 
    reception. 
    The Panther 612 Electronic Key Telephone System has been 
    certified to comply with the limits for a Class B computing 
    device, pursuant to Subpart J of Part 15 of the Federal 
    Communications Commission (FCC) Rules which are de- 
    signed to provide reasonable protection from radio and 
    television interference in a residential installation. However 
    there is no guarantee that interference will not occur in a 
    particular installation. 
    If interference is encountered, test to determine if the unit is 
    at fault by unplugging the Key Service Unit (KSU) from the 
    ( wall outlet 
    If unplugging-the KSU removes the interference, ay the fol- 
    lowing corrective measures, singly or in combination, until 
    the interference is eliminated: 
    l Change the location or position of the indoor re- 
    ceiving antenna of the radio or television. 
    . 
    Relocate the Panther 612 Set or KSU in relation to 
    the radio and television receivers experiencing 
    interference. 
    . 
    Plug the KSU into an outlet that does not also serve 
    radio or television sets. 
    If further help is needed, consult your TRILLIUM dealer or 
    an experienced radio/television technician - or refer to the 
    FCC’s booklet, “How to Identify and Resolve Radio-TV 
    Interference Problems.” It is available from the US 
    Government Priutiug Office, Washington, DC 20402 (stock 
    number OO4-000-003454). 
    HEARING AID COMPATIBILITY 
    The Panther 612 Set is compatible for those requiring a 
    hearing aid as defined in section 68.316, Part 68 of FCC 
    Rules. 
    /’ 
     
    TRILLIUM 
    Telephone ‘ Panther-6 12 
    Systems Page A-l  
    						
    							. . . . . . . . . , . . . . . . _- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - . . . . . . . . . . . . . . . . . . . . :.::::::::::::::::::::::::::::“‘:::::::::::~::~:::::::::.~::::::::::::::::::: ::::: ::::::::: z :::::::::: c:.:::: ::::::; z ::::: :::::::x-:::::. 
    . . . . . . . . . . . . . * I..... --................................................. - . . . . . . . . . . . . . . . . . . . . -- 
    FCC Technical 
    Requirements 
    Service 
    Manual 
    ::::::::::::::::::::..1...::::::::::::::::::::::::::::::~:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::;:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::;:::::::::~~::::::::-..--- f .-. 
    RESPONSIBILITIES 
    The FCC’s rules permit the Panther 612 Electronic Key 
    Telephone System to be connected to the telephone network 
    via a jack or jacks provided by the telephone company 
    (telco). These jacks are not provided for coin or party lines. 
    User Responsibilities 
    Before connecting your Panther 612 Electronic Key 
    Telephone System to the telephone lines, you must contact 
    the telephone company and provide them with the following 
    information: 
    . Telephone numbers of the lines to which the 
    Panther 612 Electronic Key Telephone System is to 
    be connected (lines 1 through 6) 
    l FCC Registration Number (found on the side of the 
    Key Service Unit or KSU: the number for either the 
    tone only KSU is EBS78T-71738-KF-T, or, for the 
    tone/rotary KSU, the number is EBS78T-71738- 
    =-E) 
    . Ringer Equivalence Number (also found on the side 
    of the KSU: the number for either version of the 
    Panther KSU is l.lB)* 
    . USOC jacks required (usually three 4-conductor. 
    RJ14 modular jacks) 
    You also have the responsibility to disconnect a malfunc- 
    tioning Panther 612 Electronic Key Telephone System from 
    the telephone lines until the cause of the malfunctioning is 
    identified and repaired. Otherwise, the telephone company 
    may temporarily disconnect service. 
    * The Canadian Department of Communications load num- 
    ber for the Panther 612 Electronic Key Telephone System is 
    16-B. 
    Telco Responsibilities 
    The telephone company is required to give you adequate no- 
    tice of any changes it makes in its technical operations cr 
    procedures that may affect the compatibility or use of your 
    Panther 612 Electronic Key Telephone System. 
    =:::::::::::: ~ :::::::::::::: :::::::::: :: ::::::::::::::: ::::z*l::::.... . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . I...... . . . . . . . - . . . . . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .- . . . . . . . . . . -- -... -.- 
    . . . . . . . ... . . . . . . . . . . . . . . . . .. . . . . . . . . I . . . . . . . . . . . . . . . . . . . . .......,..... . . . . . . I . . . . . . ... . . . . . . - . . . . . . . . . . ..-..  . . . . ..-. -...- 
    Panther 6 12 
    I TRILL;UM ( 
    pag :e A-2 
    Telephone 
    Systems  
    						
    							Technical  Technical 
    Service  Service 
    Manual  Manual System 
    Components System 
    Components 
    STANDARD COMPONENTS 
    One Key Service Unit (KSU) 
    Part Number 90-0166 (tone only) 
    or 
    Part Number 90-0084 (tone/rotary 
    The ~onelrotary key service unit (KSU) for the Panther 612 
    Electronic Key Telephone System can be programmed to 
    operate with either dual-tone, multi-frequency (DTMF) or 
    rotary (pulse) signaling. The signaling on each Central 
    < Office (CO) line can be programmed independently. The 
    tom only KSU operates only with DTMF signaling. Other 
    than signaling differences, both KSU models look alike and 
    operate iden ticall y. 
    The KSU has three connectors on its left side (labeled 
    C01.2, C03.4, and CO%) to attach the six incoming tele- 
    phone company (telco) CO lines - one connector for each 
    pair of lines (line 6 must be left vacant if the optional Door 
    Answer Unit is installed). Also on the left side of the KSU 
    are connectors labeled DOOR (used for the optional Door 
    /- Answer Unit), PAGE (used for external paging equipment), 
    MUSIC (used for an external background and on-hold music 
    source). POWER FALL (used for the optional Power Fail 
    Transfer Unit). 
    Next, the KSU has one recessed light-emitting diode (LED) 
    indicator (labeled STATUS), four miniature dual in-line 
    package (DIP) switches (labeled, from top to bottom, 1 
    PROGRAM [used to return features to their default, factory 
    preprogrammed conditions], 2 PROGRAM [used to pro- 
    gram system features], 3 [not used], and 4 BATTERY [used 
    to save feature programming]), and one recessed pushbutton 
    (labeled RESET). 
    Near the bottom left of the KSU is a 50-pin connector, la- 
    beled STATIONS 10 TO 21/LOUD BELL, that is used to 
    connect the KSU to the station wiring main distribution 
    frame (MIX) - and, through the MDF, to alI the system 
    stations. The last pair is also optionally available for con- 
    necting an external loud bell or other sounding device 
    through an external dry contact interface unit. 
    On the bottom of the KSU is a connector labeled SMDR 
    (used for the optional SMDR Interface unit). The KSUs power cord (at the top of the KSU) plugs into a 
    110 V ac outlet (but only at the appnpriate time; see the 
    Connection Procedures section). A grounding wire (12 
    AWG, solid copper) which connects to the top of the KSU 
    must be attached to a ground clamp, umally on a water pipe. 
    An input connector (labeled EXTERxti BATTERY) for 
    an optional 24 V backup battery is aha provided at the top 
    of the KSU. If ac power is lost, the switchover to backup 
    battery power is automatic when the qcional backup battery 
    is connected. 
    The unit comes with 4 screws for mmting the KSU on a 
    backboard 
    Up to Twelve Telephone tits 
    Part Number 90-0266 
    (non-handsfree) 
    &t Number 90-0168 
    (handsfree with busy lamp field) 
    Other than the handsfree operation and the busy lamp field, 
    these two models look alike and operaa: identicatly. For ex- 
    ample, both have an attractive black marre tIni&. 
    Each Set’s base has twelve dual-functkm statiort select/speed 
    call keys (labeled 10 through 21- tix top key is also used 
    for last number 
    Redial), six line seleukeys (labeled 1,2,3. 
    4,5, and 6), seven dedicated functim keys (labeled 
    Hold, 
    Flash/Cancel, Conference, Intercom, Speed, 
    Speaker, and Mic.on/off) and 
    a tone d&l keypad 
    The line 
    1,2,3,4,5, and 6 keys, the Uercom key, and the 
    Mic.on/off key have accompanying szus indicators. And, 
    only on handsfreebusy lamp field (HFELF) Sets, each sta- 
    tion select key (10 through 
    21) also has an accompanying 
    status indicator. 
    Finally, the base has a speaker volume control (a sliding ad- 
    justment) and a ringer control switch (a ‘J-position switch, 
    for low, medium, and high volume riqing). 
    Each Set also includes a telephone hardset and two modular 
    cords - a 4-conductor, coiled cord fa connecting the hand- 
    set to the Set, and a 4-conducur modular cord for 
    connecting the Set to the station wiring jack. 
    =:=:I” :::::::::::. x:; :::::::: ;:r< ::::::::::::::::::; ::::::::::::: ~‘::.w’“-“:“:~“:::..- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..-........................... 
    . . . . . ...” . . . . . . . . . . . . “... . . . . . . . . . . . . . . . . . . . . . ...” . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . * . . . . . -..- ._............... I 
    ..” . . . . . . . . . . . . . . --.....“*..* . . . . . . . *.. 
    ,- 
    c TRILLIUM 
    Telephone ’ Panther 612 
    Systems Page B-l  
    						
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