Operator Field Test Display
6110/5110, 6130/5130, 6150, 8810

Status:
VERSION     : 23, 03-Jul-98
Filename:
dct3opft.doc
 
 

CONTENTS

 1 Introduction

 1.1 Changes for 61xx series (compared to 8110i series)

 2 Using the field test display

 2.1 Activating the Field Test Display
 2.2 Deactivating the Field Test Display
 2.3 Field test modes
 2.4 Signal and battery level
 2.5 Reserving SIM SCM locations (recommendations)

 3 Information on the displays

 3.1 Signalling displays, which can be visible to network operators
        3.1.1  Display 1:   Information of the serving cell
        3.1.2  Display 2:   More information of the serving cell
        3.1.3  Display 3:   Information of the serving cell,
                            1st and 2nd neighbour
        3.1.4  Display 4:   Information of the 3rd, 4th and 5th neighbour
        3.1.5  Display 5:   Information of the 6th, 7th and 8th neighbour
        3.1.6  Display 6:   Network selection display
        3.1.7  Display 7:   System information bits for serving cell.
        3.1.8  Display 8:   HSCSD display 1
        3.1.9  Display 9:   HSCSD display 2
        3.1.10 Display 10:  Values of paging repeat period, TMSI, periodic
                            location update timer, AFC and AGC
        3.1.11 Display 11:  Network parameters
        3.1.12 Display 12:  Ciphering, hopping DTX status and IMSI
        3.1.13 Display 13:  Uplink DTX switching display
        3.1.14 Display 14:  Toggle Screening Indicator
        3.1.15 Display 17:  Switch BTS_TEST status
        3.1.16 Display 18:  Lights status control
        3.1.17 Display 19:  Toggle Cell Barred Status
 
 

1   Introduction

    This document specifies the features of 61xx series Field Test Display.
    Field Test Display, i.e. engineering test mode, is a configurable software
    feature which is available through MMI menu.

    Field Test Display is useful for testing mobile phones during development
    or for verifying the operation of the network.
 

1.1 Changes for 61xx series (compared to 8110I series)

    General changes:
        - 12 character lines (13 in HD843).
        - MNC (Mobile Network Code) in displays 6 and 11 has now 3 digits.
        - SIM SCM is used instead of B-memory SCM in displays 17, 52 and 53.

    Moved displays
        - Display 2 moved to display 3, 3 to 4, 4 to 5 and 5 to 6.

    Moved items
  - Places of C1 and C2 changed in display 1.
  - Reason of last call release copied to display 2

    Removed displays:
        - Displays that were not implemented in 8110 (i.e. removed only
          from specification)
            - Display 6: Start latest cell information saving
            - Display 7: Information of the latest and 2nd latest
                         cell/time slot
            - Display 8: Information of the 3rd and 4th latest
                         cell/time slot
            - Display 9: Information of the fifth latest cell/time slot

    New items:
        - Display 21:
            - Sum of membership function sets beliefs

    New displays:
        - Display 2:  More information of the serving cell
            - items moved from display 1:
                - paging mode
                - maximum number of Random Access retransmission
                - roaming indicator
                - BSIC value
            - Reason of last call release
            - RX quality (full)
            - C2 parameters
            - Hopping flag, MAIO and HSN
        - Display 8:  HSCSD display 1
        - Display 9:  HSCSD display 2
 
 

2   Using the Field Test Display

    When the Field Test Display is active, the phone works in a similar way as
    without it, except that the arrow buttons (^,v) scroll through the various
    tests, whereas they would scroll through the memory locations while the
    Field Test Display is inactive. The test numbers that are not valid are
    not scrolled.

    The Field Test Display appears as a so called soft indicator, which means
    that it is visible only if there is nothing else to display. For example,
    once the first digit of a phone number has been dialled, the Field Test
    Display disappears and the digit appears. After the whole number has been
    dialled and a call setup has started, the number disappears and the Field
    Test Display reverts.

    When the Field Test Display is active and mobile originated call setup is
    going, 'CALLING XXXXX' text is not shown. However, if some call divert is
    active, 'note diverts' text is viewed. When keyguard is active, keyguard
    texts (or icons) are disabled and Field Test Display is visible. Pressing
    a key views normal keyguard texts. When user activates the keyguard,
    keyguard note is shown shortly.

    During proper power off (use of power key or RE-CHARGE indication)
    some valuable data (e.g. the number of current field test display) is
    stored onto the EEPROM. Next time when the phone is powered on the lastly
    selected field test display will be automatically re-activated.
 

2.1  Activating the Field Test Display

    The Field Test Display is located at the end of the main menu loop. It is
    activated as follows:

        - press the Menu button
        - scroll in the main menu loop to field test display item
          (NETWORK MONITOR)
        - press the Select button
        - enter the index number of the test to be activated at the
          TEST NUMBER prompt
        - confirm with the Ok button

    The field test data will then appear in a moment. The index number of the
    test will appear in the top right corner of the display. If given test
    number is not valid "No Test" -text will appear to the display.

    A quicker way to activate the Field Test Display is to use the menu
    shortcut. The field test display is the last item in the main menu loop.
    The shortcut activation of the field test display is done in the following
    way:

    MENU <number of the last item> <number of the desired field test display>

    If the last number of the main menu loop is e.g. 8, in order to activate
    test display number 20, just press Menu, 8, 20 and Ok in a sequence.

    See chapter 2.5 for recommendations.
 
 

2.2  Deactivating the Field Test Display

    The Field Test Display is deactivated as follows:

        - press the Menu button
        - scroll in the main menu loop to field test display item
        - press the Select button
        - enter 0 at the TEST NUMBER prompt
        - confirm with the Ok button
 

2.3  Field test modes

    There are three Field Test Display modes:

        - execute mode
        - data display mode
        - help mode

    Different modes are marked in this specification as follows:
 
        **************        ++++++++++++++        ##############
        *            *        +            +        #            #
        *   Execute  *        +Data display+        #    Help    #
        *    Mode    *        +    Mode    +        #    Mode    #
        *            *        +            +        #            #
        **************        ++++++++++++++        ##############

    The execute mode is entered from the menu as described in 2.1 (either
    scroll and select or shortcut). If the test index entered pertains to a
    test that resets a timer (test 80) for example, then the timer is reset
    as soon as the Ok button has been pressed in the menu, and the data
    display mode takes over. In other words, the execute mode is of the
    one-shot type. To run another test in the execute mode, the Field Test
    Display menu must be re-activated.

    During the data display mode, the field test data (e.g. carrier, power
    level, cell) is visible on the main display. During the help mode, one
    screen of instructions is shown for each test to make it easier to identify
    the test in question. A long press of asterisk (*) is used to toggle
    between these two modes.

    The arrow keys (^,v) offer an easy way to switch to another test without
    using the menu. However, the data display mode remains, i.e. nothing will
    be executed or set on although such tests would be passed. This is to
    prevent the user from accidentally clearing any valuable data. (see 3.7.2
    for details and 2.5 for recommendations).
    The help mode is also a non-execute mode. Display numbers have been selected
    in such way that no 5-terminated test number is an execute display.
 

2.4 Signal and battery levels

    When Field Test Display is active, normal signal and battery level
    bars are visible.
 
 
 
 

2.5 Reserving SIM SCM locations (recommendations)

    When starting to use a SIM-card in a phone with field test displays, it is
    recommended to put some default data into SIM SCM locations that are used
    by field test displays. This prevents accidental storing of phone numbers
    and names into such locations.

    SIM SCM     Recommended    Recommended     Location used
    location    number         text (name)     by display
    --------------------------------------------------------
      33             0         BTS TEST           17

    Reserving SIM SCM locations is not necessary if the user is sure that
    he/she will never select these displays using menu shortcut (which
    executes the display).
 
    In 61xx series (DCT3) phones it is not possible to select the SIM
    location number where the number and the name will be stored.
    So, reserving a SIM location must be done by some PC software or,
    for example, by 8110i (DCT2) phone.
 
 

3   Information on the displays

    Length of a field is shown in the display picture by amount of the letters.
    If a value is not available, 'x' is shown for all the digits. If data to
    be displayed is shorter than the field reserved to show that data, text
    is aligned left and numbers right.
 

3.1 Signalling displays, which can be visible to network operators

    Those signalling displays which can be activated by the network operators
    are numbered from 1 to 19. Before field test displays are visible, mobile
    has to be modified. With the normal production mobile field test
    displays are not working.
 

3.1.1  Display 1:   Information of the serving cell

        ++++++++++++++
        +abbb ccc ddd+
        + e ff g mmmm+
        + nnn     ppp+
        +    oooo    +
        ++++++++++++++
 

        a       H, if carrier numbers are scrolled when hopping is on.
                Otherwise ' '.
        bbb     When mobile is on TCH:
                    DCH carrier number in decimal.
                When mobile is NOT on TCH:
                    CH means carrier number in decimal.
                If hopping is on, used channels are scrolled when display is
                updated.
        ccc     rx level in dBm, minus sign not shown if <=-100
        ddd     tx power level. If transmitter is on, symbol * is shown in
                front of the power level value.
        e       Time Slot, range is 0 - 7
        ff      Timing advance, range is 0 - 63
        g       rx quality (sub), range is 0 - 7
        mmmm    Radio Link Timeout value. If value is negative, 0 is shown.
                Maximum value is 64. When mobile is NOT on TCH then xx is shown.
        nnn     value of the path loss criterium (C1). Range is -99 - 999.
        oooo    type of current channel
                    THR0 : TCH HR subchannel 0
                    THR1 : TCH HR subchannel 1
                    TFR  : TCH FR
                    TEFR : TCH EFR
                    F144 : TCH FR data channel, speed 14.4 kbps
                    F96  : TCH FR data channel, speed 9.6 kbps
                    F72  : TCH FR data channel, speed 7.2 kbps
                    F48  : TCH FR data channel, speed 4.8 kbps
                    F24  : TCH FR data channel, speed 2.4 kbps
                    H480 : TCH HR data channel, speed 4.8 kbps, subch 0
                    H481 : TCH HR data channel, speed 4.8 kbps, subch 1
                    H240 : TCH HR data channel, speed 2.4 kbps, subch 0
                    H241 : TCH HR data channel, speed 2.4 kbps, subch 1
                    FA   : TCH FR signalling only (FACCH) channel
                    FAH0 : TCH HR signalling only (FACCH) channel, subch 0
                    FAH1 : TCH HR signalling only (FACCH) channel, subch 1
                    SDCC : SDCCH
                    AGCH : AGCH
                    CCCH : CCCH
                    CBCH : CCCH and cell broadcast receiving on
                    BCCH : BCCH
                    SEAR : SEARCH
                    NSPS : MS is in No Serv Power Save state
        ppp         value of the cell reselection criterium (C2).
                    Range is -99 - 999. If phone is phase 1 then C1 value is
                    shown.
 

        HELP display:

        ##############
        #CH RxL TxPwr#
        #TS TA RQ RLT#
        # C1      C2 #
        #    CHT     #
        ##############
 

3.1.2  Display 2:   More information of the serving cell

        ++++++++++++++
        + aa b c Bdd +
        + ee f       +
        + ggg hh iii +
        + H=j mm nn  +
        ++++++++++++++
 

        aa      paging mode
                   NO : normal paging
                   EX : extended paging
                   RO : paging reorganization
                   SB : same as before
        b       maximum number of Random Access retransmission
        c       roaming indicator, values are R or empty.
        Bdd     Letter B and BSIC value, range is 0 - 63.
        ee      Reason of last call release
                Cause from messages disconnect and release complete.
        f       RX quality (full), range is 0 - 7
        ggg     Cell reselect offset, range 0 - 126 dB.
                0 - 63 * 2 dB. 'xxx' in active mode.
        hh      Temporary offset, range 0 - 60 dB.
                0 - 7 * 10 dB. 70 dB means infinite time.
                'xx' in active mode.
        iii     Penalty time, range 0 - 620 s.
                0 - 31 * 20 s. 'xxx' in active mode.
        j       Hopping channel
                    0    Single RF channel
                    1    RF hopping channel
        mm      mobile allocation index offset, MAIO
                    Range: 00 to 63 / xx when H=0
        nn      hopping sequence number, HSN
                    Range: 00 to 63 / xx when H=0
 

        HELP display:

        ##############
        #PM RAR Ro BC#
        #RelR QLF    #
        #CRO TO PenT #
        #H MAIO HSN  #
        ##############
 
 

3.1.3  Display 3:   Information of the serving cell, 1st and 2nd neighbour

        ++++++++++++++
        +aaabbbcccddd+
        +aaabbbcccddd+
        +aaabbbcccddd+
        +    ef gh   +
        ++++++++++++++

        1. row: serving cell information
        2. row: 1. neighbour information
        3. row: 2. neighbour information
        4. row, ef: 1. neighbour information
        4. row, gh: 2. neighbour information

        aaa     carrier number in decimal
        bbb     C1 value, range is -99 - 999, displayed only in idle mode.
                Instead of C1 value, letter 'B' and BSIC value will be
                displayed in active mode.
        ccc     rx level in dBm, minus sign not shown if <=-100
        ddd     C2 value, range is -99 - 999
        e,g     F is shown if cell is in a forbidden location area
                otherwise location is empty.
        f,h     B is Barred, N is normal priority and L is low priority
                otherwise location is empty.
 

        HELP display:

        ##############
        #SCH C1 rx C2#
        #1CH C1 rx C2#
        #2CH C1 rx C2#
        #    1N 2N   #
        ##############
 

3.1.4  Display 4:   Information of the 3rd, 4th and 5th neighbour

        ++++++++++++++
        +aaabbbcccddd+
        +aaabbbcccddd+
        +aaabbbcccddd+
        +  ef gh ij  +
        ++++++++++++++

        1. row: 3. neighbour information
        2. row: 4. neighbour information
        3. row: 5. neighbour information
        4. row, ef: 3. neighbour information
        4. row, gh: 4. neighbour information
        4. row, ij: 5. neighbour information

        aaa     carrier number in decimal
        bbb     C1 value, range is -99 - 999, displayed only in idle mode.
                Instead of C1 value, letter 'B' and BSIC value will be
                displayed in active mode.
        ccc     rx level in dBm, minus sign not shown if <=-100
        ddd     C2 value, range is -99 - 999
        e,g,i   F is shown if cell is in a forbidden location area
                otherwise location is empty.
        f,h,j   B is Barred, N is normal priority and L is low priority
                otherwise location is empty.
 

        HELP display:

        ##############
        #3CH C1 rx C2#
        #4CH C1 rx C2#
        #5CH C1 rx C2#
        #  3N 4N 5N  #
        ##############
 
 
 

3.1.5  Display 5:   Information of the 6th, 7th and 8th neighbour

        ++++++++++++++
        +aaabbbcccddd+
        +aaabbbcccddd+
        +aaabbbcccddd+
        +  ef gh ij  +
        ++++++++++++++

        1. row: 6. neighbour information
        2. row: 7. neighbour information
        3. row: 8. neighbour information
        4. row, ef: 6. neighbour information
        4. row, gh: 7. neighbour information
        4. row, ij: 8. neighbour information

        aaa     carrier number in decimal
        bbb     C1 value, range is -99 - 999, displayed only in idle mode.
                Instead of C1 value, letter 'B' and BSIC value will be
                displayed in active mode.
        ccc     rx level in dBm, minus sign not shown if <=-100
        ddd     C2 value, range is -99 - 999
        e,g,i   F is shown if cell is in a forbidden location area
                otherwise location is empty.
        f,h,j   B is Barred, N is normal priority and L is low priority
                otherwise location is empty.
 

        HELP display:

        ##############
        #6CH C1 rx C2#
        #7CH C1 rx C2#
        #8CH C1 rx C2#
        #  6N 7N 8N  #
        ##############
 

3.1.6  Display 6:   Network selection display
 

    This display shows the last registered network country code and
    network code as well as the codes for four forbidden networks
    and the first 3 preferred networks.
 
        ++++++++++++++
        +aaabb  aaabb+
        +aaabb  aaabb+
        +aaabb  aaabb+
        +aaabb  aaabb+
        ++++++++++++++

    If three digit MNC is used (DCS1900), display looks different:

        ++++++++++++++
        +aaabbbaaabbb+
        +aaabbbaaabbb+
        +aaabbbaaabbb+
        +aaabbbaaabbb+
        ++++++++++++++

        1. row: last registered network -  1st forbidden network
        2. row: 1st preferred network   -  2nd forbidden network
        3. row: 2nd preferred network   -  3rd forbidden network
        4. row: 3rd preferred network   -  4th forbidden network

        aaa     country code coded in BCD
        bbb     network code coded in BCD, third digit can be 'F'
 
 

        HELP display:

        ##############
        #LReg   1_For#
        #1_Pre  2_For#
        #2_Pre  3_For#
        #3_Pre  4_For#
        ##############
 

3.1.7  Display 7:  System information bits for serving cell.

        ++++++++++++++
        +E A H C I BR+
        +a b c d e fg+
        +ECSC 2Ter MB+
        +  h    i   j+
        ++++++++++++++

        a       1 is shown if emergency calls are supported, else 0
        b       1 is shown if attach-detach-procedure is allowed, else 0
        c       1 is shown if half rate channels are supported, else 0
        d       1 is shown if C2 values are broadcasted, else 0
        e       1 is shown if system information 7 and 8 are broadcasted,
                  else 0
        f       1 is shown if cell broadcast is supported, else 0
        g       1 is shown if re-establishment is supported, else 0
 
       The following items are used only in dualband phones:
 
        h       In idle mode 1 is shown if Early Classmark (ECSC) sending is
                supported, else 0. In dedicated mode (conversation) X is shown.

        i       In idle mode 1 is shown if 2-Ter messages are supported,
                else 0. In dedicated mode (conversation) X is shown.

        j       MultiBand reporting decimal value (0,1,2,3) is shown if
                supported. This is shown both in idle and dedicated mode.
 

        The following is picked from Phase2+ ETSI GSM 05.08 version 5.4.0,
        Section 8.4.3 ""Additional cell reporting requirements for multi
        band MS"".

        For a multi band MS the number of cells, for each frequency band
        supported, which shall be included in the measurement report is
        indicated by the parameter, MULTIBAND_REPORTING. The meaning of
        different values of the parameter is specified as follows:

        Value   Meaning
        0 (00)  Normal reporting of the six strongest cells, with known and
                allowed NCC part of BSIC, irrespective of the band used.

        1 (01)  The MS shall report the strongest cell, with known and allowed
                NCC part of BSIC, in each of the frequency bands in the BA
                list, excluding the frequency band of the serving cell.
                The remaining positions in the measurement report shall be used
                for reporting of cells in the band of the serving cell.
                If there are still remaining positions, these shall be used to
                report the next strongest identified cells in the other bands
                irrespective of the band used.

       2 (10)   The MS shall report the two strongest cells, with known and
                allowed NCC part of BSIC, in each of the frequency bands in the
                BA list, excluding the frequency band of the serving cell.
                The remaining positions in the measurement report shall be used
                for reporting of cells in the band of the serving cell.
                If there are still remaining positions, these shall be used to
                report the next strongest identified cells in the other bands
                irrespective of the band used.

       3 (11)   The MS shall report the three strongest cells, with known and
                allowed NCC part of BSIC, in each of the frequency bands in the
                BA list, excluding the frequency band of the serving cell.
                The remaining positions in the measurement report shall be used
                for reporting of cells in the band of the serving cell.
                If there are still remaining positions, these shall be used to
                report the next strongest identified cells in the other bands
                irrespective of the band used.

        HELP display:
 
        ##############
        #Serving Cell#
        #System Info #
        #Bits        #
        #            #
        ##############
 
 

3.1.8  Display 8:  not implememnted !
 

        HELP display:

        ##############
        #            #
        #            #
        #            #
        #            #
        ##############
 
 
 
3.1.9  Display 9: not implememnted !
 

        HELP display:

        ##############
        #            #
        #            #
        #            #
        #            #
        ##############
 

3.1.10  Display 10:  Values of paging repeat period, TMSI, periodic location
                    update timer, AFC and AGC

        ++++++++++++++
        +TMSIaaaaaaaa+
        +T321:bbb/ccc+
        +PRP:d  ee ff+
        + ggggg  hhh +
        ++++++++++++++

        aaaaaaaa    TMSI value in hex format
        bbb         Current value of T3212 counter (range is 000 - 'ccc', where
                    1 means 6 min time.  So, if this value is 2 less than 'ccc'
                    then next periodic location updating will be made within
                    2 * 6 min = 12 minutes.
        ccc         Timeout value of T3212 counter (range is 000 - 240, where 1
                    means 6 min time between location updates and 240 means
                    240 * 6 min = 24 h between location updates. 000 means that
                    periodic location update is not in use.)  This value is
                    received from the network.
        d           Value of paging repeat period (range is 2 - 9, when paging
                    is in every second multiframe, mobile takes more current
                    than if it were in every 9th multiframe)
        ee          Downlink signalling failure value. If value is negative,
                    0 is shown. Maximum value is 45. When mobile is on TCH
                    then xx is shown.
        ff          Gain value on TCH/SDCCH, range is 0 - 93
        ggggg       VCTCXO AFC DAC control, range is -1024 - 1023
        hhh         Serving cell channel number
 

        HELP display:

        ##############
        #TMSI(hex)   #
        #T3212ctr/tim#
        #PaRP DSF AGC#
        #  AFC   Ch  #
        ##############
 

3.1.11  Display 11:  Network parameters

        ++++++++++++++
        +CC:aaa NCbbb+
        + LAC:ccccc  +
        + CH : dddd  +
        + CID:eeeee  +
        ++++++++++++++

        aaa     MCC value in decimal (MCC=Mobile Country Code)
        bbb     MNC value in decimal (MNC=Mobile Network Code)
                Three digits are shown only in DCS1900.
                In other systems only two digits are shown.
        ccccc   LAC value in decimal (LAC=Location Area Code)
        dddd    Serving cell channel number
        eeeee   Cell Identifier in decimal format

        LAC and CID may be in hex format in some projects.
        Or even both decimal and hexadecimal formats may be
        shown on the same line.
 

        HELP display:

        ##############
        # MCC    MNC #
        #LocAreaCode #
        #ServChannel #
        #   CellId   #
        ##############
 

3.1.12  Display 12:  Ciphering, hopping, DTX status and IMSI

        ++++++++++++++
        +CIPHER :aaa +
        +HOPPING:bbb +
        +DTX    :ccc +
        +IMSI   :ddd +
        ++++++++++++++

        aaa     ciphering value, OFF/A51/A52
        bbb     hopping value, ON/OFF
        ccc     DTX value ON/OFF
        ddd     IMSI attach
                   ON  : IMSI attach on
                   OFF : IMSI attach off

    These values are updated only on the TCH.
 

        HELP display:

        ##############
        #CipherValue #
        #HoppingValue#
        #DTXValue    #
        #IMSIAttach  #
        ##############
 
 

3.1.13  Display 13:  Uplink DTX switching display

    With this display it is possible to change MS to use DTX or not, if BS
    allows MS to decide it.

    This display must be activated from MENU to change DTX state. When MENU is
    not active and the user is scrolling field test displays with NEXT and
    PREVIOUS, the DTX state will not change.
 

        **************
        *aaaaaaaaaa  *
        *DTX(DEF):bbb*
        *DTX(BS) :ccc*
        *            *
        **************

        aaaaaaaaaa  status of switched mode.
                       DTX:ON    : MS uses DTX
                       DTX:OFF   : MS does not use DTX
                       DTX:DEF   : MS use default state of DTX.
                                   Defined in MS_PAR.H
                       NOTALLOWED: BS does not allow MS to decide if it uses
                                   DTX or not.
        bbb         default state of DTX. Defined in MS_PAR.H
                    The value is either ON or OFF
        ccc         is DTX value from BS
                       MAY : BS allows MS to decide if it uses dtx or not
                             on uplink.
                       USE : BS controls MS to use dtx (on uplink)
                       NOT : BS controls MS not to use dtx (on uplink)

        HELP display:

        ##############
        #DTXMode     #
        #DefaulDTXSta#
        #DTXValFromBS#
        #            #
        ##############
 

3.1.14  Display 14:  Toggle Screening Indicator

    When selected, changes the value of Screening Indicator from 0 to 1 and
    vice versa.
 

        **************                   **************
        *  SCREENING *                   *  SCREENING *
        *  INDICATOR *                   *  INDICATOR *
        *    IS 00   *                   *    IS 01   *
        *            *                   *            *
        **************                   **************

        HELP display:

        ##############
        #Use menu to #
        #  change    #
        # Screening  #
        # indicator  #
        ##############
 

3.1.15  Display 17:  Switch BTS_TEST status

        **************                   **************
        *            *                   *            *
        *  BTS TEST  *                   *  BTS TEST  *
        *     ON     *                   *    OFF     *
        *            *                   *            *
        **************                   **************

        Mobile is                         Mobile is
        searching only                    behaving normally.
        one frequency.                    Neighbour measurements
        Neighbour measurements            are done.
        are not done.

    This display is used to toggle BTS_TEST status on EEPROM. If BTS_TEST
    status is set on EEPROM each time the mobile sends a search list it uses
    only the carrier number stored on SIM SCM-location 33. Also the neighbour
    information from system information messages is ignored. If the BTS_TEST
    status is not set, then the value of SIM SCM-location 33 is ignored and the
    mobile behaves normally (i.e. does the neighbour measurements according the
    GSM specifications).

    To activate BTS tests perform following steps:
        - Save desired channel number in SIM SCM-location 33.
        - Select display 17 in execute mode
        - Switch power off and on
    If activation succeeded, there is text "BTS TEST ON" in display 17.

    To deactivate BTS tests either select display 17 in execute mode or
    save number 0 in SIM SCM-location 33 and switch power off and on.

    NOTE! The display does not show the value of BTS_TEST status in EEPROM.
    Although the value is set, bts test can be off. If there is not legal
    carrier number in SIM location 33 (GSM: 1-124, DCS1800: 512-885) the
    display shows that bts test is off. Also if the mobile was already
    registered to some carrier before switching BTS_TEST status, the display
    can show different value from the one in EEPROM.
 

    See chapter 2.5 for recommendations.

        HELP display:

        ##############
        #Use menu to #
        #toggle BTS  #
        #test ON/OFF #
        #            #
        ##############
 

3.1.16  Display 18:  Lights status control

    If selected, lights are always on, otherwise light status is controlled by
    UI.

        **************                   **************
        *            *                   *            *
        *   LIGHTS   *                   *   LIGHTS   *
        *    ON      *                   *    OFF     *
        *            *                   *            *
        **************                   **************

        HELP display:

        ##############
        #Use menu to #
        #  toggle    #
        #  lights    #
        #  ON/OFF    #
        ##############
 

3.1.17 Display 19:  Toggle Cell Barred Status

        **************         **************         **************
        *            *         *            *         *            *
        * CELL BARR  *         * CELL BARR  *         * CELL BARR  *
        * ACCEPTED   *         * REVERSE    *         * DISCARD    *
        *            *         *            *         *            *
        **************         **************         **************

    This test is meant to be used when some cells are tested prior taking them
    into commercial use. By setting the barring on in the base station normal
    GSM phones will not try to register these barred cells. By selecting cell
    barring reversed, the MS will only use the cells to be tested. However, if
    at the same time it is wanted that MS will be capable to use normal network
    cell barring ignored can be set. Display 19 will show the cell barring
    mode.

    NOTE! If a cell has been selected before barring state is changed the
    selected cell may have different barring state than what the display shows.
    After reselection the cell barring state is working for sure.

        HELP display:

        ##############
        #Use menu to #
        #toggle cell #
        #barr status #
        #DIS/ACC/REV #
        ##############