Northern Telecom DMS-100 Series Parts list manual

NORTHERN TELECOM PRACTICE 297-2011-202
Issued 87 05 13
Standard
Release 01.01
Minimum BCS21
Printed in Canada Northern Telecom 1987 Page i
DIGITAL SWITCHING SYSTEMS
DMS-100 FAMILY
INTEGRATED BUSINESS
NETWORK SERVICE
MERIDIAN M5112
HANDSFREE (12 BUTTON)
BUSINESS SET
DESCRIPTION,
INSTALLATION,
OPERATION AND
MAINTENANCE
*DMS-100 AND MERIDIAN ARE TRADEMARKS
OF NORTHERN TELECOM
CONTENTS PAGE
1.INTRODUCTION.................................... 1-1
PHYSICAL CHARACTERISTICS .............................. 1-1
OTHER DOCUMENTATION.................................... 1-1
2.SPECIFICATIONS .................................. 2-1
PERFORMANCE SPECIFICATIONS........................... 2-1
ENVIRONMENTAL AND SAFETY CONSIDERATIONS...... 2-1
LINE ENGINEERING........................................... 2-2
POWERING REQUIREMENTS................................. 2-2
Contents continued ------------------

PRACTICE 297-2011-202
CONTENTS (Continued) PAGE
3.OPERATION AND FEATURES ...................... 3-1
BASIC OPERATIONS ........................................... 3-1
FEATURES DESCRIPTION..................................... 3-1
FEATURES OPERATION ....................................... 3-3
4.INSTALLATION PROCEDURES .................... 4-1
5.VERIFICATION PROCEDURES AND
MAINTENANCE..................................... 5-1
VERIFICATION TEST ROUTINES............................. 5-1
MAINTENANCE................................................. 5-1
LOOP CHECK ................................................... 5-1
POLARITY CHECK ............................................. 5-1
STATION RINGER TEST ....................................... 5-1
6.ORDERING INFORMATION........................ 6-1
REPLACEMENT PARTS ........................................ 6-1
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PRACTICE 297-2011-202
1. INTRODUCTION
1.01 The Business Set is designed for direct connection, through a
non-loaded subscriber loop pair, to the Northern Telecom DMS-250,
DMS-100, or Meridian SL-100 Digital Switching Systems.
1.02 The M5112 12-button Handsfree Business Set will work with a
maximum loop length of 4,572 m (15,000 ft) of 26 AWG standard
twisted pair telephone wires, subject to Line Engineering rules
(297-2011-180). The Set requires a 16 Vac external plug-in type power
supply to be fully operational. If the external power supply fails, the
M5112 Set reverts to basic business set service, i.e. key/indicator pairs
1 to 10 will function normally, while the key/indicator pairs 11 to 12
together with the Headset, Handsfree and Muting features cease to
function. Handset operation is supported without the volume control
capability. Ringer loudness and on-hook dialing voice quality will
suffer some degradation during local power failures. The plug-in
transformer is equipped with an NE-267QA Duplex Adapter which
allows feeding of external power through the line cord to the telephone.
1.03 The service provided by the Business Set substitutes low-level
signals passed over a half-duplex, above-voiceband signaling channel
for the traditional loop signaling (dial pulse) or inband tone signaling
(DTMF tones) on a conventional subscriber loop. In addition to
signaling and supervision, messages on the above-voiceband signaling
channel include signals for implementing the many special features
available on the Business Set.
1.04 The M5112 Business Set offers a choice of selected key and
system features; it has 5 fixed feature keys, two of which have
associated Liquid Crystal Display (LCD) indicators, a dial pad
consisting of 12 fixed keys, 10 programmable feature and/or directory
number keys with LCD indicators, and is equipped with a microphone
and a speaker for Handsfree operation.
PHYSICAL
CHARACTERISTICS 1.05 Fig. 1-1 gives the dimensions and main components of the
Meridian M5112 Business Set. The set comes in three different colors:
(a) Chameleon-grey (NT4X31AA, NT4X31CA, NT4X31EA)
(b) BTS light-grey (NT4X31BA, NT4X31DA, NT4X31FA)
(c) Black (NT4X31GA, NT4X31HA, NT4X31JA)
OTHER
DOCUMENTATION 1.06 Other information pertaining to Business Sets can be found in
the following documents:
297-2001-100
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PRACTICE 297-2011-202
Integrated Business Network (IBN) - Description
297-2011-180 DMS-100 Business Set - Line Engineering Rules
297-1001-114 Operational Measurements (OM)
297-1001-250 Testing and Acceptance for Initial Installation
297-1001-310 Table Editors User Guide
297-2101-310 Service Order and Query System Reference Manual
297-1001-518 Operational Measurements - Man-Machine
Interface
P0669369 Business Set User Guide (English, Canadian
edition)
P0683227 Business Set User Guide (English, U.S. edition)
P0672721 Business Set User Guide (French)
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PRACTICE 297-2011-202
Fig. 1-1
M5112 Business Set - Features and Dimensions
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PRACTICE 297-2011-202
2. SPECIFICATIONS
PERFORMANCE
SPECIFICATIONS 2.01 The following specifications govern the performance of the
M5112 Business Sets, and the environmental conditions under which
this performance is achieved.
ENVIRONMENTAL AND
SAFETY
CONSIDERATIONS
2.02 The M5112 Business Set meets the Canadian and U.S.
mandatory interconnect requirements for Telephone Equipment.
Temperature and
Humidity 2.03 Operating State.
Temperature range: 5°to 50°C (41°to 122°F)
Relative humidity: 20% to 95% (non-condensing). At
temperatures above 34°C (93°F),
relative humidity is limited to 52
mbar of water vapor pressure.
DUMMY REGION ADDED FOR ,blk. TAG.
2.04 Non-Operating State.
Temperature range: -50°to 70°C (-58°to 158°F)
Relative humidity: 20% to 95% (non-condensing). At
temperatures above 34°C (93°F),
relative humidity is limted to 52
mbar of water vapor pressure.
Electromagnetic
Interference 2.05 The radiated and conducted electromagnetic interference meets
the requirements of Subpart J of Part 15 of the FCC rules for class A
computing devices.
Atmospheric Pollution 2.06 The M5112 Business Set is designed to withstand normal
atmospheric conditions throughout its life and during shipment and
storage as defined in the International Electromechanical Commission
(IEC) document 50 (salt mist, atmospheric dust, sulfur dioxide, and
hydrogen sulfide exposure).
Vibration 2.07 The M5112 Business Set is designed to work to specifications
after being subjected to the following vibrations in three orthogonal
directions for 90 minutes:
•Vibration frequency range of 5 to 500 Hz.
•Maximum half displacement 0.35 mm (.014 in).
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PRACTICE 297-2011-202
•Maximum acceleration 15 m/s/s.
Shock 2.08 Packaged: The Business Set, within its packaging, is designed
to withstand normal handling during shipment.
2.09 Unpackaged: The telephone and the handset are designed to
withstand accidental dropping during normal use, without sustaining
damage, as follows:
•Telephone: when dropped on any face or corner from a height of
750 mm (30 in).
•Handset: when dropped from a height of 1.5 m (5 ft).
LINE ENGINEERING 2.10 The M5112 Business Set operates to its full potential through
twisted pair wiring on transmission lines selected by the rules given in
297-2011-180.
POWERING
REQUIREMENTS. 2.11 The M5112 Business Set requires a 16 Vac external power
supply (plug-in transformer) which must meet the following power
consumption requirements:
Active local power consumption: Maximum current drawn, with the
set active and the speaker driven
to maximum volume, is less than
120 mA RMS (2.5 Watts).
Idle local power consumption: Maximum current drawn by the
telephone in the idle state is less
than 60 mA RMS (1.3 Watts).
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PRACTICE 297-2011-202
3. OPERATION AND FEATURES
BASIC OPERATIONS
Making a Call and
Accessing Features 3.01 The M5112 Business Set can be used to make voice calls and
operate selected DMS-100 or Meridian SL-100 features. Most
supported features can be accessed via the keys provided on the M5112
Business Set. For further details on software requirements, refer to
297-2011-100 and 297-1001-310. Dial pad, DN, and feature key layout
is shown in Fig. 1-1.
Note: The M5112 Business Set can not be assigned as a
maintenance set.
3.02 Detailed descriptions of how to dial and how to answer a call,
and how to access the various features are given in the User Guide
which is shipped with each telephone. Refer to the User Guide before
attempting to operate the Meridian M5112 Business Set.
Peripheral Equipment 3.03 The M5112 Business Set interfaces with the business set
(6X21AC) line card in the Line Concentrating Module (LCM) of the
DMS100/Meridian SL-100 Central Office (CO) equipment. The 6X21AC
supports one business set per line card.
Acoustics 3.04 A speaker is used for alerting tones and voice traffic. A
microphone is provided for the Handsfree feature.
Power 3.05 The M5112 Business Set requires external power for operating
the Liquid Crystal Display (LCD) key indicators for all feature keys
beyond key 8, and for the Handsfree feature. Power is supplied from a
16 Vac plug-in transformer and is transmitted to the business set via an
NE-267QA Duplex Adapter through a wire pair which is part of the line
cord.
3.06 M5112 Business Set service during local power
failures. If the external power supply fails, the headset and handsfree
features will not function. Handset operation will be maintained without
the volume adjustment capability. The muting function is not available
during local power failures. Ringer loudness and on-hook dialing
voice quality will suffer some degradation, but feature key/LCD pairs
with the exception of the handsfree and mute key/LCD pairs remain
operational.
FEATURES
DESCRIPTION
Keys
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PRACTICE 297-2011-202
3.07 The M5112 Business Set (Fig. 1-1) is characterized by the
following:
(a) There are 15 fixed keys with no LCD indicators, assigned as:
•Release key (1)
•Hold key (1),
•Volume up/down key (1), and
•Dial pad keys (12).
(b) There are 2 fixed keys with associated LCD indicators, assigned
as:
•Handsfree key (1)
•Mute key (1)
(c) There are ten (10) assignable key/LCD indicator pairs.
3.08 LCD indicators used with DN keys support four (4) key/LCD
states as follows:
FUNCTION LCD STATE
Idle Off
Ringing (or Flashing at 60 interruptions
“Feature Pending”) per minute (IPM)
Hold Winking at 120 IPM
Active On
Basic Features 3.09 Every Business Set has the following basic features:
(a) Automatic Prime DN selection: allows the user to select the
prime DN (i.e., the DN assigned to the first key) by going
off-hook to answer a call without pressing a DN key.
(b) On-hook Dialing: allows a call to be dialed by selecting a line
and dialing the number without lifting the handset.
(c) Listen On Hold: can be activated by pressing the hold key
(associated LCD flashing), placing the handset back in its cradle,
and re-selecting the line to be monitored (associated LCD ON).
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PRACTICE 297-2011-202
Note: The on-hook dialing and listen on hold features are not
equivalent to the handsfree feature. Whenever the set is on-hook and
a Directory Number (DN) key is pressed, the set will be in on-hook
dialing mode and dial tone is heard through the speaker. The user
will be able to monitor the line, but in order to carry on a
conversation the user must lift the handset (in case of the M5112, he
can choose to plug in a headset or activate the handsfree feature) in
order to be heard by the other party.
(d) Alerting Tones: Warble tone sounds when telephone is
on-hook, 500 Hz local buzzer tone sounds when telephone is
off-hook.
Additional Features for
M5112 3.10 In addition to the basic business set features, the M5112
Handsfree Business Set provides the following:
(a) Handsfree conversation: allows the user to carry on a
telephone conversation without lifting the handset (applies to both
originating and answering a call)
(b) Microphone muting: allows the user to listen to a call without
the other party being able to hear any sound from the user.
(c) Headset operation: automatically transfers speech to headset
after headset is plugged in.
(d) Automatic Answer Back (AAB): This is an optional feature.
When equipped, it will allow an incoming call to the Prime DN of
the set to be automatically answered after one ring. Conversation
takes place through the integrated handsfree unit without
manually controlling the unit. This option can be provided with or
without a feature key permanently assigned to it.
FEATURES OPERATION
Fixed Keys 3.11 The fixed keys on the M5112 Business Set provide these
permanent functions: Handsfree conversation, microphone muting, call
Hold, call Release, Volume Control, and dialing.
3.12 Handsfree. This feature is used as given in Table 3-A.
Table 3-A
OPERATION OF HANDSFREE FEATURE - M5112 BUSINESS SET
Initial State Action Result Verification
Table Continued --------------------------------
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PRACTICE 297-2011-202
Table 3-A Continued
OPERATION OF HANDSFREE FEATURE - M5112 BUSINESS SET
Idle or Active Depress Handsfree key Enable Generates off-hook condition
(Handsfree LCD indicator
turns ON and speech is
transferred to Handsfree
speaker).
Active. Handsfree ON Depress Rls (Release) key Disable Generates on-hook condition
(Handsfree LCD indicator is
turned OFF).
Active. Handsfree ON Lift handset Disable Transfers speech to handset
(Handsfree LCD indicator is
turned OFF).
Idle or Active Plug in headset Disable Disables Handsfree feature
and transfers speech to
headset.
Active. Handsfree ON Depress Mute key Mute Disables microphone but
speaker remains on.
Microphone can be restored
by operating the Mute key
again. The Mute LCD indicator
winks during microphone
muting; winking stops if Mute
key is depressed again. The
Mute feature also functions in
handset and headset modes.
3.13 Dialpad. Before a call is established, no tone-feedback is
provided when the dialing keys are being pressed. After a call has been
established, end-to-end signaling using CO generated DTMF tones is
enabled.
3.14 Hold. The HOLD function has two modes of operation, manual
and automatic. With the user engaged in a call, the call can be put on
hold either by pressing the HOLD key or by pressing another DN key.
In either case the DN LCD changes from ON to “winking” and the user
is free to answer or make another call.
3.15 Release. The Rls key performs a similar function as going
on-hook, i.e. when pressed, it terminates a call. The DN LCD associated
with the released call changes from the ON state to the OFF state,
however, the status of the Set remains “off hook” to the switch.
Volume Control 3.16 There are five volume registers which permit independent
adjustments for handsfree, headset, handset, on-hook dialing, and
alerting tone volumes. Volume settings are maintained as follows:
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PRACTICE 297-2011-202
•Handset, headset, handsfree, and alerting tone volume settings
are stored automatically with the activation of the Volume
Up/Volume Down key. Handset, headset and handsfree volume
settings revert to default values (mid-point volume) after local
power failure. When the loop voltage is interrupted, the alerting
tone reverts to nominal (mid-point volume) and the on-hook
dialing setting reverts to minimum.
•On-hook dialing volume setting can be stored by simultaneously
depressing both ends of the Volume Up/Volume Down key.
•Handset receive level is reset to nominal each time the handset is
placed into its cradle.
•The previous headset receive level is automatically recalled each
time the headset is plugged in.
•When the headset is used together with the handset, the headset
volume setting is used for both.
Volume Adjustments.. 3.17 Volume adjustments are made while the relevant path is enabled,
e.g. the volume for alerting tones can only be adjusted while alerting is
in progress and the Handsfree speech volume level can only be adjusted
while listening through the Handsfree feature.
3.18 Handset, Handsfree and Headset Volume
Adjustments. Holding down the right hand side of the volume
adjustment key will increase the volume until the key is released or
maximum volume is reached. Holding down the left hand side of the
volume adjustment key will decrease the volume until the key is released
or minimum volume is reached. Volume settings are automatically
stored for further calls or until re-adjusted.
3.19 On-hook Dialing (or Call Monitoring) and Alerting
Tone VolumeAdjustments. Tapping the volume adjustment key at
the right hand side will increase the volume, tapping it at the left hand
side will decrease it. The volume changes in steps each time the key is
released. The alerting tone volume setting is automatically stored for
further calls or until re-adjusted. Only the on-hook dialing (or call
monitoring) volume requires pushing down both ends of the volume
adjustment key after the desired volume level is obtained in order to
store the setting for further calls or until a re-adjustment is made.
Assignable Keys 3.20 The ten assignable feature keys can be assigned a subset of a
number of features. Examples of some of the available features are
given as follows:
Automatic Answer Mode (AAM)
Automatic Dial (AUD)
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PRACTICE 297-2011-202
Automatic Line (AUL)
Busy Override (EBO)
Call Back Queuing (CBQ)
Call Forward (CFW)
Call Park (PRK)
Call Pickup (CPU)
Call Waiting (CWT)
Directed Call Park (DCP)
Directory Numbers (DN)
Group Intercom (GIC)
Individual Business Line
Intercom (ICM)
Make Set Busy (MSB)
Malicious Call Hold (MCH)
Message Waiting (MWT)
Multiple Appearance Directory Numbers (MADN)
Privacy Release (PRL)
Query Busy Set (QBS)
Ring Again (RAG)
Set Busy Indicator (SBI)
Speed Calling (SCS, SCL, or SCI)
3-Way Calling/Call Transfer (TWC/CXR)
6-Port Conference (CFN)
3.21 Local Tones. A locally generated buzzer (500 Hz) tone is
utilized for call waiting and off-hook alerting. All other telephony tones
are provided by the switching equipment from a Tone Card.
3.22 Tone Characteristics. The various tones heard on the
M5112 Business Set are defined as follows:
TONE CHARACTERISTIC
Ringing Interrupted warble tone, typically 2
seconds ON, 4 seconds OFF
Busy Interrupted tone, 1 second ON, 1 second
OFF
Call Waiting Short burst of buzzer tone (500 Hz), 10
second intervals
Confirmation Three short bursts of tone, not repeated
(informs user that feature requested has
been implemented. This tone is present
only when the feature access code is
dialed)
Dial
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PRACTICE 297-2011-202
Continuous tone (consisting of 2
frequencies)
Reorder Interrupted tone, 1/2 second ON, 1/2
second OFF (informs user of unavailable
feature, all trunks busy, illegal code etc.)
Ring Again Short burst of buzzer tone (500 Hz), once
only (informs user that previously busy
station or trunk line is now free)
Special Dial Three short bursts of dial tone, followed
by continuous dial tone (informs user that
dialed feature, e.g. call forwarding, has
been activated and further digits [ e.g.
station directory number to which calls are
to be forwarded] can be dialed).
Auto Answerback 3.23 The Auto Answerback (AAB) feature can be provided on the
M5112 Business Set either as an assigned feature or as a key-accessible
feature. As an assigned feature it is always operational. As a
key-accessible feature the assigned feature key allows the user to
activate or deactivate the AAB feature at will. If AAB is activated, an
incoming call to the Prime DN of the set is automatically answered after
a 2-second burst of alerting tone. Conversation can start in Handsfree
mode via speaker and microphone. When the user lifts the handset or
uses a headset, speech is shifted to the device in use, as is the case
during normal Handsfree mode operation without AAB. Microphone
muting is also possible in AAB mode. The call is automatically
disconnected when the calling party hangs up.
Headset 3.24 The TELADAPT* connector for the headset is located on the
underside of the telephone beside the line cord Teladapt connector (Fig.
4-2). A Vantage 48* style (electret) headset must be used with the
M5112 Business Set.
DUMMY REGION ADDED FOR ,ftn. TAG.
*TELADAPT and Vantage are trademarks of Northern Telecom
Plugging the headset in creates an automatic off-hook condition. At
this point, either a call can be dialed or the line can be released by
operating the “Rls” key. If a call is received while the headset is
plugged in, a 500Hz tone is heard through the speaker.
Note: Handset and headset may be used simultaneously
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PRACTICE 297-2011-202
4. INSTALLATION PROCEDURES
Unpacking or Packing 4.01 Use proper care while unpacking the M5112 Business Set.
Check for damaged containers so that appropriate claims can be made to
the transport company for items damaged in transit.
4.02 If a Business Set has to be returned to the factory, ascertain that
it is packed in the appropriate container as shown in Fig. 4-1 to avoid
damage during transit. Remember to include all loose parts (e.g. cords,
handset and power supply) in the shipment.
Preparations 4.03 Installation requires plugging the connecting cords into the
Teladapt jacks that are accessible at the base of the Business Set. Cord
restraining tabs are provided for security (See Fig. 4-2). Make the
necessary connections to the Teladapt connecting block (Tip [ + ] green
lead and Ring [ -] red lead). Plug the local power supply transformer
into a receptacle close to the teladapt connecting block, then plug the
NE-267QA Duplex Adapter (hard wired to the transformer) into the
connecting block teladapt jack. Continue with steps as given in Chart
4-1 to complete the M5112 Business Set installation.
Note: The M5112 Handsfree Business Set cannot be wallmounted.
Chart 4-1
M5112 BUSINESS SET INSTALLATION
STEP PROCEDURE
1Place telephone in work area (close to line cord connecting block) upside down on a number
of sheets of soft, clean paper on solid, level work surface to prevent damage to movable
keys and telephone face.
2Connect handset cord 4-conductor Teladapt connectors to handset and to the telephone. The
Teladapt connectors have a latch-tab which ensures correct alignment and prevents the cord
from being pulled out inadvertently during service. Ascertain that this latch tab is firmly
snapped into place.
3After connecting handset cord to connector in base of set, route the cord through channel
and past restraining tabs in base of telephone (Fig. 4-2).
4Connect line cord to connector in base and push under restraining tabs in line cord channel
of telephone base (Fig. 4-2).
5Turn telephone right side up and place in final workstation position.
6Print directory number on designation card, remove number lens by inserting a paper clip
end in the hole at the side and levering upwards, insert designation card, and snap lens with
card back into place.
Chart Continued --------------------------------
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PRACTICE 297-2011-202
Chart 4-1 Continued
M5112 BUSINESS SET INSTALLATION
STEP PROCEDURE
7Designate button labels for key designations.
8Fold labels, insert inside plastic button cover, and snap button cover over movable key,
pressing down on key, as required. Repeat for all keys.
9Insert line cord Teladapt connector into any one of the two NE-267QA Duplex Adapter
Teladapt jacks at the connecting block and ascertain that it has securely snapped into place.
10 Wait a minimum of 20 seconds to allow for proper power-up before using the Business Set.
This completes the installation.
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PRACTICE 297-2011-202
Fig. 4-1
Unpacking or Packing the M5112 Business Set
Page 4-3

PRACTICE 297-2011-202
Fig. 4-2
View of Jacks and Tabs at Base of Telephone
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PRACTICE 297-2011-202
5. VERIFICATION PROCEDURES AND MAINTENANCE
VERIFICATION TEST
ROUTINES 5.01 These are acceptance tests. If the criteria outlined in the Line
Engineering Rules (297-2011-180) are observed, impulse noise,
background noise and crosstalk compatibility problems are unlikely.
The loop check should be performed, the telephone installed, and the
Tip/Ring polarity should be checked before attempting to establish a
communication path to another telephone and going through the
different call routines (enabled features) while observing and verifying
the responses at the set. Key/LCD indicators pairs can be tested with the
“Station Ringer Test” (SRT) in accordance with Chart 5-1.
MAINTENANCE 5.02 Maintenance of the Business Set is restricted to replacement of
the set and other field replaceable items as tabulated in Part 6 (Ordering
Information).
LOOP CHECK 5.03 Loop and linecard tests must be performed at the switching
equipment (ref. 297-2011-180). It is assumed that loops and linecards
have been checked out prior to the installation of any Business Sets.
5.04 Verify that the loop resistance is ≤1230 Ohm, and that the loop
loss is ≤24 dB at 8 kHz.
POLARITY CHECK 5.05 The M5112 Business Set is polarity sensitive. If problems arise
when the set is to be put into service, proceed as follows:
(a) If the set does not respond (no dial tone) after 20 seconds, check
polarity of the tip and ring leads (tip + , ring -).
(b) If tip and ring lead reversal does not solve the problem, restore tip
and ring to original polarity and change the set.
STATION RINGER
TEST 5.06 The Station Ringer Test tests the hardware of the M5112
Business Set and can be performed by the installer or repairman at the
site with no involvement of the Central Office personnel.
Test Set-Up 5.07 With the handset on hook and all LCD indicators off, press the
prime directory number (prime DN) key and dial the 3 to 14 digit access
code. The access code consists of a one to seven digit number which is
assigned by the telephone company according to local preferences,
followed by the last two to seven digits of the prime DN assigned to the
telephone to be tested. In North America, the access code usually
consists of the number 57, followed by the last five digits of the prime
DN. If the required digits are dialed incorrectly, a reorder tone will
sound which makes it necessary to press the Rls key and start again. If
all digits are correct, all LCD indicators at the set, except the LCD
associated with keys 11 and 12 (Handsfree and Mute key indicators)
will light up. The test can now proceed in accordance with Chart 5-1.
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PRACTICE 297-2011-202
Note: The system will not attempt to restore any LCD to its pre-test
state. The LCDs will be OFF at the end of the test, with features in the
same state as before the test. A background audit restores all feature
indicators at its next occurrence (audit intervals are switch and load
related). Any newly activated features after termination of the test
procedure will be indicated normally. No incoming calls can be
received for the duration of a Station Ringer Test. In order to prevent
prolonged line blockages, this test is limited to a 7 minute interval
after which the line will automatically be restored to normal and the
test terminated.
Chart 5-1
STATION RINGER TEST - KEY SEQUENCES
•Perform operations in the order as given in this Chart.
•Operate key or switch as given in the “Key or Switch Operated” column. The response must be as
given in the “Response Observed” column. LCD and key numbering are given in Fig. 5-1.
•The column headed “Messages Used” indicates the messages generated to produce the correct
response.
Note: The two topmost Keys are affected differently by the station ringer test. Key 12 is
permanently associated with the handsfree function and key 11 is permanently associated with the
microphone muting function. Where “All LCDs ... ” is given in this Chart, both LCD indicators
associated with keys 11 and 12 are excluded and remain OFF.
KEY OR SWITCH
STEP OPERATED RESPONSE OBSERVED MESSAGES USED
1
2
3
4
5
6
7
8
9
Handset OFF-HOOK
Handset ON-HOOK
Handset OFF-HOOK
Handset ON-HOOK
Dial Pad key 1
Dial Pad key 2
Dial Pad key 3
Dial Pad key 4
Dial Pad key 5
All LCDs FLASH
All LCDs WINK
All LCDs ON
All LCDs OFF
LCD 1 ON
LCD 2 ON
LCD 3 ON
LCD 4 ON
LCD 5 ON
LCD indicator FLASH
LCD indicator WINK
LCD indicator ON
LCD indicator OFF
Soft Reset, LCD ON
Soft Reset, LCD ON
Soft Reset, LCD ON
Soft Reset, LCD ON
Soft Reset, LCD ON
10
11
12
13
14
15
Dial Pad key 6
Dial Pad key 7
Dial Pad key 8
Dial Pad key 9
Dial Pad key 0
Dial Pad key *
LCD 6 ON
LCD 7 ON
LCD 8 ON
LCD 1 & 8 ON
LCD 2 & 8 ON
All LCDs ON
Soft Reset, LCD ON
Soft Reset, LCD ON
Soft Reset, LCD ON
Soft Reset, LCD ON
Soft Reset, LCD ON
Soft Reset, LCD ON
Save Indicator Status
Chart Continued --------------------------------
Page 5-2