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Inter-Tel Imx/Gmx 416/832 Installation Manual

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    							TROUBLESHOOTING INTER-TELPRACTICES 
    Issue 1, November 1994 IMWGMX 416/832 INS’IXLLATION & MAINTENANCE 
    (11) 
    (12) 
    (13) 
    (14) 
    (15) #30 Toll Security Feature Expired: The 
    Week- 
    ly Toll Limit feature is no longer in effect. It can 
    be reenabled only by Inter-Tel Services person- 
    nel. 
    #Bl Toll Security Limit 
    Exceeded: The weekly 
    limit 
    for one or both types of monitored calls is 
    100% depleted. The Programmer can set the lim- 
    it to a higher value or reset it to zero. (When this 
    alarm is displayed, any further alarms will not 
    overwrite the display.) 
    #32 Toll 
    Security Data Changed: The weekly 
    toll 
    limit information has been changed in the 
    database. 
    #33 DISA 
    Security Limit Exceeded: A DISA 
    caller has entered an invalid password three con- 
    secutive times. The incoming DISAtrunk is dis- 
    connected and will not answer again for five 
    minutes. 
    #34 
    Toll Security Limit At 80%: The weekly 
    limit for one 
    or both types of monitored calls is 
    80% depleted. The programmer can set the limit 
    to a higher value or reset it to zero. (When this 
    alarm is displayed, any further alarms will not 
    overwrite the display.) 
    C. MAJOR ALARMSTEATREQUIRE 
    IMMEDJATJZA’ITENTION 
    4.4 If a major alarm is detected by the system, the red 
    MAJOR ALARM LED on the system status panel will 
    light. When a major alarm occurs, do the following: 
    (1) Attempt to reset the system by using the reset 
    switch on the front of the Matrix Card or the 
    HDLC Card or by using the programming termi- 
    nal (refer to PROGRAMMIN G, page 5-168). If 
    the system does not recover from the alarm, con- 
    tinue to the next step. 
    (2) Turn OFF the AC POWER for at least ten sec- 
    onds and then turn it ON again. 
    (3) If the system still does not recover from the 
    alarm, check the system voltages as outlined in 
    INSTALLKL’ION on page 3-103. Using the 
    troubleshooting charts beginning on page 6-12, 
    try to isolate the defective part(s). 
    NOTE When returning a faulty part, indicate all appli- 
    cable error messages on the material return authoriza- 
    tion m) tag. 
    Page 6-8  
    						
    							INTER-TELPRACTICES 
    TROUBLESHOOTING 
    IMX/GMX 416/832 INSTALIATION & MAINTENANCE Issue 1, November 1994 
    D. FIELD SERVICE DIAGNOSTICS 
    4.5 
    Field service diagnostics can be programmed to 
    appear in the SMDR printout or as a separate error print- 
    out. When listed in a printout, field service diagnostics 
    are preceded by 
    l ** 
    and the time of day when the error 
    message occur&. Possible field service diagnostics 
    and the associated troubleshooting procedures are as 
    follows: 
    0) 
    (2) 
    (3) 
    (4 
    HDLC Errors: ?? Xx: This indicates a hard- 
    ware problem in error handling. Contact Cus- 
    tomer Support and report the error message and 
    the circumstances under which it occurred. 
    Card: ‘Qpe 
    Number -Inserted, Passed Init: 
    This 
    indicates successful detection and initial- 
    ization of the card. No action is necessary. 
    Card: Qpe 
    Number - Removed: This indi- 
    cates removal of the card. No action is necessary. 
    STNAr X.Y ml]: The system has detected or 
    received an error from a DKSC/KSC device 
    (keyset, DSS/BLF Unit, or Attendant Computer 
    Console). The possible accompanying error 
    messages are: 
    a. 
    RZT Detected Transmission Emr: The sys- 
    tem has detected a transmission error from a 
    keyset, DSWBLF Unit, or Attendant Com- 
    puter Console. This message may occur 
    when the line cord is removed from a keyset, 
    DSWBLF Unit, or Attendant Computer Con- 
    sole and when the 25-pair cable is removed 
    from a Keyset Card. In these cases, no action 
    is required. However, if the error message oc- 
    curs repeatedly for a DKSC/KSC circuit or a 
    group of DKSC/K!E circuits for which the 
    line cord(s) or the station cable is not being 
    removed, all station cabling and wiring 
    should be checked. If the problem persists, 
    replace the station instrument and/or the 
    Keyset Card and return for repair. 
    b. ?? 2X: The system has detected an invalid 
    data byte from a keyset, DSWBLF Unit, or 
    Attendant Computer Console. This message 
    may occur when the line cord is removed 
    from a keyset, DSWBLF Unit, or Attendant 
    Computer Console and when the 25pair 
    cable is removed from a Keyset Card. In 
    these cases, no action is required. However, 
    if the error occurs repeatedly for a DKSC/ 
    KSC circuit or a group of DKWKSC cir- 
    cuits for which the line cord or the station 
    cable is not being removed, all station cab- 
    ling and wiring should be checked. If the 
    Page 6-9 
    C. 
    d. 
    e. 
    f. 
    g. 
    h. problem persists, replace the station instru- 
    ment and/or the Keyset Card and return for 
    repair. 
    RZT Detected No-Respoonse Emr: The sys- 
    tem has detected a lack of response from a 
    keyset, DSS/BLF Unit, or Attendant Com- 
    puter Console. This message generally indi- 
    cates a hardware problem. Check all station 
    cabling and wiring. If the problem persists, 
    replace the station instrument and/or the 
    Keyset Card and return for repair. 
    Reconfigumz Request: The system has de- 
    tected a temporary transmission problem 
    from a keyset, DSS/BLP Unit, or Attendant 
    Computer Console. If this error message oc- 
    curs only intetmittently, no action is neces- 
    sary. However, if the error occurs repeatedly 
    for a DKSC/KSC circuit or a group of DKSCI 
    KSC circuits, check all station cabling and 
    wiring. If the problem persists, replace the 
    station instrument and/or the Keyset Card 
    and return for repair. 
    Spurious Interrupt: The indicated device has 
    undergone a reset. The reset may have been 
    caused by electrostatic shock or electromag- 
    netic interference in the vicinity of the station 
    instrument. If this error message occurs only 
    intermittently, no action is necessary. How- 
    ever, if the error occurs repeatedly for a 
    DKSC/KSC circuit or a group of DKSC/KSC 
    circuits, check all station cabling and wiring. 
    If the problem persists, replace the station 
    instrument and/or the Keyset Card and return 
    for repair. 
    RTT Detected OMSCI Hardware Ermr: The 
    system has detected a faulty DKSC/KSC cir- 
    cuit. Replace the faulty Keyset Card and re- 
    turn it for repair. 
    Inconsistency Envr: The system has de- 
    tected inconsistent communication with a 
    keyset, DSS/BLF Unit, or Attendant Com- 
    puter Console. If this error message occurs 
    only intermittently, no action is necessary. 
    However, if the error occurs repeatedly for a 
    DKSC/KSC circuit or a group of DKSC/KSC 
    circuits, check all station cabling and wiring. 
    If the problem persists, replace the station 
    instrument and/or the Keyset Card and return 
    for repair. 
    Peripheral Detected Xm*t Ermr: A keyset, 
    DSS/BLF Unit, or Attendant Computer Con- 
    sole has detected a transmission error from 
    the system. If this error message occurs only  
    						
    							TROUBLESHOOTING INTER-TELPRACTICES 
    Issue 1, November 1994 
    IMX/GMX 416/832 INSTALLATION & MAINTENANCE 
    1. 
    j. 
    k. 
    1. 
    m. 
    Il. intermittently, no action is necessary. How- 
    ever, if the error occurs repeatedly for a 
    DKSCXSC circuit or a group of DKSCLKSC 
    circuits, check all station cabling and wiring. 
    If the problem persists, replace the station 
    instrument and/or the Keyset Card and return 
    for repair. 
    Peripheral Output Queue Overflow: This in- 
    dicates that the station user is pushing the 
    keys on the station instrument at an unrea- 
    sonably fast rate. If this error message occurs 
    only intermittently, no action is necessary. 
    However, if the error occurs repeatedly, the 
    station user should be instructed to avoid 
    pushing the station instrument keys so rapid- 
    lY* 
    Lamp Sojbvare Envr: This message indi- 
    cates a problem with the software. Freeze the 
    CP history queue and notify Customer Sup 
    port of the error message. Reset the identified 
    station instrument to attempt to clear the 
    problem. 
    Envr Message Lost: This indicates that 
    DKSC/KSC error messages might have been 
    lost. No action is necessary. 
    State 
    Enur: This message indicates that the 
    peripheral processor’s RAM code has been 
    corrupted. The indicated card should be reset 
    (unplugged, then re-inserted). Notify Cus- 
    tomer Support of this error message along 
    with any prior error messages. 
    The following errors indicate a problem with 
    a keyset, DSS/BLF Unit, or Attendant Com- 
    puter Console. When these errors occur, re- 
    place the faulty device and return it for repair. 
    Peripheral Watchdog Tiieout 
    Peripheral Trap Error 
    Peripheral Tier Error 
    Peripheral SWI Error 
    Peripheral TDFU Error 
    KY - This 
    message may appear when a 
    DKSC/KSC device is connected to a Keyset 
    Card and when the system is powered up. The 
    (6) 
    0 
    (8) 
    (9) 
    message indicates the station version number 
    sent to the system. Ifthemessage reads”VO”, 
    no action is necessary. If the message reads 
    anything other than TO”, the DKWKSC 
    device is not functioning properly and must 
    be replaced. 
    The following messages indicate minor software 
    errors. Although they detect inconsistent opera- 
    tion, they generally do not warrant a system re- 
    set. If any of these messages should occur, note 
    the circumstances under which they occurred 
    and contact Customer Support. 
    Invalid InpubKeyset: XX State: XXX Input: XX 
    Invalid InpubKeysek XX State.: XXX Tier No.: Xx 
    Invalid InputAine: XX State: Xxx Input: XX 
    Invalid InputLine: XX State: XXX Timer No.: XX 
    Gutccl Tier Not Found = $xX Device = $xXxX 
    Invalid Error Message: Task 
    Single User Abort: Device ‘Qpe = ‘ITITI’ De- 
    vice Number = $xX: This 
    message indicates 
    that a minor software reset has occurred concem- 
    ing the indicated device. Note the circumstances 
    under which the message occurred and contact 
    Customer Support. 
    Last CPKO History Freeze and Last CPKO 
    History Un-Freeze: 
    By themselves, these mes- 
    sages do not indicate any errors. They are printed 
    to indicate when the last freeze and unfreeze of 
    the CP and CO history queues took place. They 
    should be reported along with the accompanying 
    error messages. 
    Xx 
    Requests For A DTMF Receiver Failed In 
    The Last Six Hours Due 
    To Ail DTMF Receiv- 
    ers Being Used: 
    If this message occurs frequent- 
    ly, additional DlMF decoders should be 
    installed on the Matrix Card and/or the Expan- 
    sion Card. (See pages 2-15 and 2-16 for addi- 
    tional information.) 
    Any other error messages: Note the circum- 
    stances under which the message(s) occurred 
    and contact Customer Support. 
    NOTE: When returning a faulty station instrument or 
    card, indicate all applicable error messages on the mate- 
    rial return authorization @IRA) tag. 
    Page 6-10  
    						
    							INTER-TELPRACTICES TROUBLESHOOTING 
    IMX/GMX 416/832 INSTALLATION & MAINTENANCE Issue 1, November 1994 
    E. POWER-UP STATUS MESSAGES 
    4.6 When the 
    system power is turned on, it should fol- 
    low the power-up process described on page 3-B in 
    INSTALLKHON. However, if the system does not 
    power up properly, the status message displayed on the 
    programming monitor can sometimes be used to isolate 
    the problem. Some possible failed power-up messages 
    and the associated troubleshooting procedures are as 
    follows: 
    (1) HDLC Error: The MXC-HDLC cable is dis- 
    connected or the telecom card cage has no 
    power. This 
    indicates that the HDLC controller 
    has detected an external interrupt. Check to see 
    that the Matrix Card is properly seated. The 
    problem could also be a defective HDLC-to- 
    MXC interface cable or a defective power supply 
    module. 
    (2) If the system stops before completing the entire 
    power-up process, one of the messages listed be- 
    low may be displayed. 
    If so, check to see that the 
    pro68 Card and the HDLC Card are properly 
    seated. The problem could also be a defective 
    Pro6g-to-HDLC interface cable, a defective 
    pro68 Card, or a defective HDLC Card. If the 
    problem cannot be corrected, record the status 
    message and contact Customer Support. 
    PIO-IllltiolizptiOll PfClimkyRAMTest 
    Relimhary Initialization 
    Write&otect RAM Test 
    Performing Self-Tests 
    Common OS Data Initialization 
    System Task Data Initialiition 
    PostingMcssagcsToUscrTasks 
    Minor Initialization Complete 
    Major Initialization Complete 
    Page 6-11  
    						
    							TBOUBLESHOOTING lNTEB-TELPBACTIcES 
    Issue 1. November 1994 IMX/GMX 416/832 lNS’ML.LATION & MAINTENANCE 
    I 
    5. TROUBLESHOOTING CHARTS 
    NOTE: For additional troubleshooting procedures and 
    important diagnostic information, refer to the new 
    2561832 
    Tmuble.shootingfDiagnostics Manual, which 
    will be published at a later date. In the interim, certified 
    technicians may contact Customer Support for any nec- 
    essary troubleshooting assistance. 
    5.1 The simplified troubleshooting charts located on 
    the following pages list symptoms, possible causes, and 
    corrective actions for problems. Look up the problem in 
    the appropriate chart and perform the corrective actions 
    in the order given. The troubleshooting procedures for 
    correcting equipment failures have been divided into six 
    categories: 
    A. System 
    B. COTnmks 
    C. Features 
    D. Keysets 
    E. Single-Line Sets 
    F. DSWBLF Units 
    NOTE: Throughout the troubleshooting section of the 
    manual, there are numerous references to replacing the 
    defective part and returning it for repair. However, be- 
    fore returning any part, proper troubleshooting proce- 
    dures should be used to verify that the part is actually de- 
    fective. For example, if a Keyset Card (DKSC, KSC, or 
    KSC-D) appears to be defective, swap it with a “known 
    good” card presently installed in the system. If the prob- 
    lem follows the suspect card, it can be considered defec- 
    tive. For more information on returning defective equip 
    men< refer to page 6-41. 
    A. 
    SYSTEM 
    5.2 If the 
    problem involves one of the following sys- 
    tem features, refer to Figure 6-2 on pages 6-14 through 
    6-17. 
    Repeated occurrence of all calls in progress drop 
    Ping. 
    All keysets are inoperative. 
    DISA is inoperative. 
    Unable to interface with a computer call-up device. 
    The time of day is inaccurate. 
    No music-on-hold/background music. 
    RFI/EMI present over conversations. 
    Faulty DID numbers displayed at attendant stations. 
    5.3 If the problem involves one of the following CO 
    trunk symptoms, refer to Figure 6-3 on pages 6-18 
    through 6-23. 
    B. COTRUNKS 
    .A,, 
    I 
    _’ 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    C. 
    CO trunk inoperative throughout the system. 
    Cannot obtain CO dial tone. 
    Low volume on all CO trunks. 
    Cannot break CO dial tone. 
    Cannot place an outgoing call. 
    Other station conversations can be heard on the CO 
    trunk. 
    Calls are dropped during conversation or when 
    answered. 
    CO trunk cannot be reseized. 
    Noise on CO trunk at all stations. 
    CO trunk remains seized after the call is ended. 
    Ground start trunks not functioning properly. 
    I 
    FEATURES 
    5.4 For problems involving the following features, re- 
    fer to Figure 6-4 on pages 6-24 to 6-29. 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 Feature does not appear to work properly. 
    Cannot transfer CO or intercom calls to other sta- 
    tiOnS. 
    Cannot transfer calls to outside numbers. 
    Cannot transfer incoming CO calls or place them on 
    hold. 
    Cannot initiate a conference. 
    Redial feature is inoperative. 
    Cannot initiate an internal page. 
    Cannot initiate an external page. 
    House phone is inoperative. 
    Cannot initiate a call forward. 
    Calls do not follow requested forward. 
    Station is not receiving hunt group calls. 
    Station is not receiving pages. 
    Call privacy release inoperative. 
    Station cannot be placed in do-notdisturb. 
    Automated attendant inoperative. 
    SMDA reports not generated automatically and/or 
    cannot be generated using the attendant feature 
    code. 
    Page 6-12  
    						
    							INTER-TELPRACTICES TROUBLESHOOTING 
    IMX/GMX 416/832 INSTALLATION & MAINTENANCE Issue 1, November 1994 
    D. KEYSETS 
    5.5 If problems involve keysets or their optional 
    equipment, refer to Figure 6-5 on pages 6-30 through 
    6-35. 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    I 
    0 
    0 
    0 
    0 
    0 
    E. Keyset is inoperative. 
    A group of keysets is inoperative. 
    LCD is inoperative. 
    Headset is inoperative. 
    Keyset squeals when placing and/or receiving calls. 
    Camtot break CO dial tone. 
    Data device not operating properly. 
    Data noise when the keyset is off hook. 
    Cannot obtain intercom dial tone. 
    Cannot break intercom dial tone. 
    Cannot place an intercom call. 
    Cannot place a call 
    using the speakerphone on a digi- 
    tal keyset. 
    LRA not operating properly. 
    Cannot receive off-hook voice announce calls. 
    Cannot place off-hook voice announce calls. 
    Erratic keyset operation. 
    SINGLE-LINE SETS 
    5.6 The following problems are discussed in Figure 
    6-6 on pages 6-36 through 6-38. 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    0 
    F. Single-line set is inoperative. 
    Agroup of eight or 16 single-line seta is inoperative. 
    Single-line set will not ring. 
    Ring trip is not provided to a group of eight or 16 
    single-line sets. 
    AC ringer-equipped single-line sets will not ring. 
    Cannot obtain intercom dial tone. 
    Camtot place an intercom call. 
    Cannot break CO dial tone. 
    Cannot place off-hook voice announce calls. 
    Single-line sets not receiving message waiting in- 
    dications and/or message lamps not functioning 
    properly- 
    DSS/BLF UNITS 
    5.7 For DSWBLF Unit problems, refer to Figure 6-7 
    on pages 6-39 and 640. 
    DSS/BLF Unit is inoperative. 
    Incorrect LED indications. 
    Calls are transferred to the wrong station. 
    Cannot place immediate off-hook voice announce 
    calls. 
    page 6-13  
    						
    							TROUBLESHOOTING INTER-TELPRACTICES 
    Issue 1, November 1994 
    IMX/GMX 416/832 INSTALLATION & MAINTENANCE 
    FIGURE 6-2. SYSTEM TROUBLESHOOTING CHART - 
    ! 
    / 
    SYMPTOM I PROBABLE CAUSE 
    Repeated 
    occurrence of all 
    calls in progress dropping 
    I 
    AC line is not isolated and 
    dedicated 
    Defective power supply 
    module(s) 
    ~ 
    IC-CO/CO-CO Disconnect 
    timer(s) need(s) adjustment 
    Inter-Ring Silence timer val- 
    ue is set too short 
    CORRECTWE ACTION 
    Have isolated, dedicated line installed. Refer to 
    page 3-4 in INSIALLKlTON for details. 
    Refer to INSTALLAHON, page 3-55,. to perform 
    the power supply electrical test. Replace the powel 
    supply module(s) if faulty. 
    Relocate the equipment cabinet a minimum of 20 
    feet from any equipment that is a potential source 
    of interference. 
    See dialed digits field in SMDR, page 4-124 in 
    FEMURES. 
    Set timer(s) to a higher value. Refer 
    to PROGRAMMING, page 5-77. 
    Ensure timer value is set longer than the central 
    office ringing is “off.” See PROGRAMMING, 
    page 5-77. 
    Refer to page 3-103 to test the system voltages. 
    Replace the card(s) if faulty. 
    NOTE: The central office must provide a minimum of 20mA loop current. 
    SYMPTOM 
    All keysets in the system are 
    inoperative; no LED indica- 
    tion when a trunk or call key 
    is pressed; +30.5 fo.9VDC 
    measurement (as described 
    on page 3-103) is not pres- 
    ent (+3OVDC LED on the 
    MXC is off) 
    PROBABLE CAUSE 
    CORRECTIVE ACTION 
    Dpen or loose connection in 
    the cable between the power Turn off the AC power. Check to see that the Tele- 
    wpply and the Telecom corn Motherboard power cable is properly con- 
    Motherboard, or a defective netted. Repair or replace the power supply, the 
    cable, and/or the Telecom Motherboard if the con- 
    cable 
    nection is faulty. 
    Defective power supply 
    Use a voltmeter to check the +3OVDC voltage at 
    module or connector 
    the power supply terminals. If the voltage is not 
    t30.5 fo.9VDC, replace the 30V Module, the 
    power supply chassis, and/or the cable. 
    Defective DKSC/KSC 
    Remove all DKSC/KSCs from the equipment cabi- 
    net. Replace the DKSC/KSCs one at a time and 
    check the system voltages on the MXC or EXP 
    Card (refer to page 3-103), until the defective card 
    is isolated. Replace the faulty card. 
    Defective Telecom Mother- 
    Check the system voltages on the MXC or EXP 
    board Card (refer to page 3-103). Replace the Telecom 
    Motherboard if necessary. 
    j 
    Page 6-14  
    						
    							INTER-TELPRACTICES TROUBLESHOOTING 
    IMX/GMX 416/832 INSTALLATION & MAINTENANCE Issue 1, November 1994 
    FIGURE 6-2. SYSTEM TROUBLESHOOTING CHART (CONT’D) 
    I SYMPTOM I PROBABLE CAUSE 
    I CORRECTWE ACTION 
    I 
    DISA inoperative User error 
    Refer to PEAWRES, page 4-38, for correct pro- 
    cedures. 
    Telephone not compatible 
    User must dial in from a MMF telephone. 
    Programming error Ensure that the trunk group is identified correctly 
    as a day or night DISA trunk group. Refer to PRO- 
    GRAMMING, page 5-111. 
    Defective trunk card Replace the defective card(s). 
    Defective MXC or EXP Refer to page 3-103 to test the system voltages. 
    Card 
    Replace the card(s) if faulty. 
    NOTE: Due to the natural characteristics of the CO trunk, the volume level of M’MP tones transmitted over the trunk 
    may be substantially reduced before reaching the 416/832 System. This natural degradation in tone volume may ad- 
    versely affect the reliability of the DISA feature. Other factors which can affect DISAperformance are CO trunk noise 
    and the quality and strength of the M’MP tones generated by the off-premises phone itself. 
    SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION 
    Unable to interface with 
    computer call-up device ~~cuivnt being called is 
    Ensure that the called equipment is functioning 
    (banking machine, answer- correctly. 
    ing machine, auto dialer, 
    etc.) 
    DThdF digit duration/pause 
    Check with the equipment manufacturer for 
    specifications of called 
    equipment is incompatible lYlMP digit duration/pause specifications. Adjust 
    with 416l832 System lYlMP Digit Duration/Pause timer. (Refer to page 
    5-77 in PROGRAMMIN G.) Default value is 6/100 
    second. 
    CO trunk is designated for 
    dial-pulse signaling CO trunk must be designated as DTh4F. Refer to 
    page 5-103 in PROGRAMMING. 
    Defective trunk card 
    Replace the associated trunk card. 
    Defective MXC or EXP 
    Card Refer to page 3-103 to test the system voltages. 
    Replace the card(s) if faulty. 
    SYMPTOM 
    PROBABLE CAUSE 
    CORRECTIVE ACTION 
    The time 
    of day displayed The clock on the PC Moth- 
    on keyset LCDs, printed on erboard, which controls the If the system clock is gaining or losing less than 
    SMDA reports, etc. is inac- ten minutes a week, the time can be adjusted auto- 
    system clock functions, is 
    matically through database programming. (See 
    curate out of tolerance or defective PROGRAMMIN 
    G, page 5-172, for details.) 
    If the system clock is gaining or losing more than 
    ten minutes a week, replace the PC Motherboard. 
    Page 6-15  
    						
    							TROUBLESHOOTJNG INTER-TELPRACTICES 
    Issue 1, November 1994 
    JMX/GMX 416/832 INSTALLATION % MAINTENANCE 
    FIGURE 6-2. SYSTEM TROUBLESHOOTING CHART (CONT’D) . . 
    : 
    ...I ~,’ 
    SYMPTOM PROBABLE CAUSE 
    CORRECTWE ACTION 
    No music-on-hold/back- 
    External music source 
    Check the external music source for proper opera- 
    ground music (external mu- turned off or inoperative 
    tion. Optimal input level is .77!5VRMS (OdB). Re- 
    sic source connected) 
    fer to INSTALL/ZION, page 3-142. 
    Matrix Card MOH jumper 
    Move the music-on-hold jumper strap(s) on the 
    strap(s) not in proper posi- 
    MXC to the ON position. 
    tion (no MOH, but back- 
    ground music is operative) 
    Defective cable between Repair or replace the cable. Check to see that the 
    music source and MXC proper connector was used. Refer to SPECIPICA- 
    TIONS, page 2-14. 
    Defective MXC 
    Replace the MXC. 
    SYWTOM 
    PROBABLE CAUSE 
    CORRECTIVE ACTION 
    RFIIEMI 
    present over con- 
    AC power source or ground- 
    Verify that the AC circuit is isolated and dedicated 
    rersations 
    ing incorrect 
    (see page 3-4 in INSI’ALLATION) and check for 
    proper grounding (see page 3-54 in INSTUA- 
    TION). 
    Grounding point is source of While the system is running on AC power, tempo- 
    rarily remove the grounding wire to determine if it 
    is the source of the RFI/EMI. See page 3-54 in 
    INSTALLAIION for proper grounding require- 
    ments. 
    AC power source is causing If an external battery back-up power source is in- 
    stalled, switch system operation to battery back-up 
    power by unplugging the power source’s 
    AC pow- 
    er cord (with grounding wire connected to equip 
    ment cabinet). If RFI/EMI stops, the 
    AC power 
    source is the cause. Install an RlWEMI filter or 
    equivalent on the AC outlet. 
    A 
    NOTE: For further RFWMI troubleshooting assistance while ox site, certified technicians should contact Customer 
    Support with the following information: 
    1. Modulation -AM, FM, or other 
    2. Frequency of the interfering station (in Hz) 
    3. Broadcast power 
    4. Distance between equipment cabinet and broadcast antenna 
    5. Who hears RFL 
    l Outside call - inside party only? 
    l Outside call - outside party only? 
    l Outside call - both parties? 
    0 Intercom call - one or both parties? 
    1 6. Type of instrument(s) on which RFI is heard -Standard Digital Keyset, Executive Digital Keyset, IMX 24-line 
    keyset, IMX 24-line AIM keyset, IMX 12&e keyset, IMX 1Zline AIM keyset, IMX 8line keyset, IMXS-line 
    AlM keyset, Inter-Tel/DVK 24line keyset, Inter-Tel/DVK 1Zline keyset, Inter-Tel/DVK 8-line keyset, GMX 
    24line keyset, GMX 1Zline keyset, GX 24-line keyset, ESLS, SLI, or single-line IYI’MF set 
    Page 6-16  
    						
    							INTER-TELPRACTICES 
    IMX/GMX 416/832 INSTALLATION & MAINTENANCE TROUBLESHOOTING Issue 1, November 1994 
    FIGURE 6-2. SYSTEM TROUBLESHOOTING CHART (CONT’D) 
    SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION 
    Faulty DID numbers dis- User error (after dialing the 
    only valid DID “start” digits can be properly pro- 
    played at attendant stations correct 3- or 4digit “base” 
    cessed by the system. 
    number, the user entered in- 
    correct or incomplete ‘start” 
    digits) 
    Programmiqf error 
    Ensure that all valid DID numbers have been pro- 
    grammed to ring in to the appropriate locations. 
    (gee page 5-107 in PRGGRAMMING.) 
    Defective DID trunk from 
    At the IDC block, remove the bridging clips for 
    central office (the system is 
    the trunk. On the system side of the block, use a 
    receiving incomplete or mu- 
    test set to verify the DID trunk connection and the 
    tilated DID “start” digits) 
    system’s ability to accept and process valid digits. 
    Also, move the trunk to a known good IDC circuit. 
    If the problem follows the trunk, contact the tele- 
    phone company. 
    Defective IDC Card 
    Replace the associated IDC Card. 
    Page 6-17  
    						
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