Lucent Technologies
Bell Labs Innovations
Multiple Digital Message Unit
Installation and Use Manual
Issue 1, October 1999
© 1999 Bogen Communications, Inc.
All rights reserved. 54-2024-01 9910
Model: LUMDMU
PEC Code: 5325-100
COM Code: 408184000
Select Code: 701-000-117
Introduction
The Multiple Digital Messaging Unit (MDMU) is a micro processor based
digital voice announcement system. It outputs prerecorded messages
through a public address system. Up to 99 messages can be placed in
the units digital memory for queued replay. Up to eight messages can
be programmed to play in sequence with timed delays.
Depending on the amount of memory option configured in the MDMU,
multiple messages can range from 32 seconds up to 8 minutes 44
seconds in length. Voice and audio messages can be stored into
memory through dial-up telephone, microphone interface, or tape input.
(The MDMU is programmed by dial-up telephone DTMF tones.)
This guide gives installation, recording, and programming steps. Since
messages are digitally stored, and there are no moving parts, the MDMU
should give years of uninterrupted service.
Before You Start
on page ii. Be sure you have all the necessary parts, tools, and test
equipment, listed below.
1
2
Check Shipping Container Contents.
■
Multiple Digital Messaging Unit
■
Mounting Hardware (screws and brackets)
■
Cables, RJ-21 to wire lug end and power cord
■
This Installation and Configuration guide
1
3
Have Required Tools
The following tools are required for the installation of the MDMU
hardware an cabling.
Phillips screwdriver (small and large)
■
Standard blade screwdriver (small and large)
■
Wire strippers (24 AWG - 12 AWG)
■
Telephone test set
■
Tone out circuit tester (optional, for troubleshooting)
■
Volt-ohm Meter (optional for troubleshooting)
■
4 wood screws, if mounted on wall
■
Installation Steps
1
Mount the MDMU to either a wall, cabinet or a rack
(near the paging equipment if possible).
Figure 1. Wall Mounted Unit
2
Figure 2. Rack Mounted MDMU
Connect the MDMU to the Telephone System
2
BATTERY
OFF ON
OPTION
SWITCH
REM
AUX. CONNECTOR
J1
MOST
TELEPHONE
SYSTEM
TIP AND RING FROM
ANALOG STATION
Figure 3 MDMU Connection to Telephone System
3
3
Plug the modular cord into connector J1 on MDMU
and connect the wires on the other end to the
Over Ride terminal.
Figure 4. MDMU Connection to Over Ride
4
Connect the RJ-21 cable/connector to the MDMU Aux.
Interface and to terminal block.
NOTE: For specific pin-out
information for this connector
this guide. Messages 1
OPTION
REM
BATTERY
OFF ON
J1
AUX. CONNECTOR
SWITCH
through 6 correspond to
message starts 1 through 6.
RJ-21 CABLE AND
CONNECTOR
SCREW LUG
TERMINAL BLOCK
MESSAGE #1
TYPICAL CONNECTION
TO MOMENTARY
CONTACT CLOSURE
TO START MESSAGE
TYPICAL
CONNECTION TO
TERMINAL BLOCK
MESSAGE #6
Figure 5 Connection of RJ-21 Cable to MDMU.
4
5
Set the MDMU options on the DIP switch. Refer to
the table below.
NOTE: Switches 1, 2, and 3
sets the number of messages in
a single queue sequence. The
timing between those
messages is set by switches 4,
5, and 6. Switch 7 sets the
total possible number of
BATTERY
OFF ON
OPTION
SWITCH
REM
messages for the unit. Switch
8 is always in the ON position.
Figure 6 Set MDMU Options on DIP Switch
Table 1. DIP Switch Setting Definitions
SET
SWITCH
# 2 TO
SET
SWITCH
# 7 TO
MAX. No. of
MESSAGES IN
SEQUENCE:
SET
SWITCH
# 1 TO
SET
SET
SET
SET
SWITCH SWITCH SWITCH SWITCH
# 3 TO
# 5 TO
# 6 TO
# 4 TO
1
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
ON
OFF
ON
ON
ON
ON
ON
—
—
—
—
—
—
—
—
—
—
—
—
—
2
3
4
5
OFF
OFF
ON
ON
OFF
ON
ON
OFF
OFF
6
7
OFF
ON
—
—
OFF
OFF
ON
OFF
OFF
OFF
—
8
DEFAULT DELAY BETWEEN MESSAGES:
ON
ON
ON
ON
OFF
ON
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0:05
0:10
ON
ON
—
—
OFF
OFF
ON
0:30
ON
OFF
ON
1:00
—
—
—
—
OFF
5:00
OFF
OFF
15:00
30:00
ON
OFF
OFF
—
—
—
—
—
—
—
—
OFF
NUMBER OF MESSAGES AVAILABLE:
ON
1 TO 9
01 TO 99
—
—
—
—
—
—
OFF
5
Power Up System
1
Plug the power cord into the A.C. input connector on
the MDMU, then into the wall oulet.
The MDMU will display three messages in sequence:
MDMU 2.00
Software version of unit.
3.16
Total time available in memory for
recording.
IDLE
Indicates the status MDMU: Idle = no
activity; PLY = A message is being
played out through connector J1; Delay =
the time delay between successive
messages is active.
2
Push the Battery slide switch to the ON position.
The MDMU is now ready to record and play meassages.
NOTE: The internal battery
maintains the recorded
messages two hours in the
event of a power failure or
brownout. Allow 48 hours to
fully charge.
BATTERY
OFF ON
OPTION
SWITCH
REM
If power is to be removed from
the MDMU for an extended
period of time, turn the battery
switch to the Off position to
avoid permanent damage to
the battery.
NOTE: The suggested reliable
lifetime of the rechargeable
battery used in the equipment
is 36 months. To ensure the
system has reliable battery
backup, it is recommended
the battery be replaced every
30 months.
Figure 7 Battery Switch
6
Front Panel Operation
The MDMU can record messages input from the front panel through the
Hand Set, Tape, and Mic connectors. The unit also record and store
messages input remotely through telephone access to the REM port using
a DTMF (touch tone) telephone.
Controls and Indicators
FRONT VIEW
HAND
SET
FUNC
RUN
TAPE
MIC
IDLE
MULTIPLE DIGITAL
MESSAGING UNIT
RUN
TAPE
INPUT
MIC
FUNCTION
FUNCTION
DISPLAY
FUNCTION
BUTTON
INPUT
SELECTION
BUTTON
HANDSET
INPUT
REAR VIEW
BATTERY
OFF ON
OPTION
SWITCH
AUX. CONNECTOR
REM
J1
POWER
INPUT
TELEPHONE
ACCESS
OPTION
SWITCH
BATTERY
SWITCH
50 PIN RJ-21
CONNECTOR
MESSAGE
OUTPUT
Figure 8 Controls and Indicators.
Recording Messages
The highest priority message should be recorded on the lowest message
number (1) to ensure fastest replay (i.e. Fire in Building...).
Plug the telephone handset, microphone, or tape
player into the appropriate connector on the front
panel.
1
2
Press the (black) FUNC button until the RECORD
message is displayed.
RECORD
Press the (red) RUN button to display the message
number #1.
3
7
4
5
To record on another message number, press the
FUNC key until the desired message number appears.
NOTE: Depending on number
of messages optioned during
installation (switch 7), the
(available message numbers
will read 1 through 9, or 01
through 99.
Press the RUN button and begin speaking into the
handset, microphone, or press play on the tape player.
NOTE: If the message number
selected has been
pre-recorded, a messaged will
display "SURE?" Press "RUN"
again to append to the existing
message.
SURE ?
During recording, the display
will show the amount of
memory remaining for the unit
in minutes and seconds.
mm:ss
When recording is complete, press the FUNC key.
6
7
The display shows the amount of time
used for the message:
NOTE: While recording a
message, pressing RUN will
pause the recording. Press
RUN again to continue.
TIME
0:30
DONE
IDLE
Repeat steps 2 through 6 to record other messages.
8
Listening to Recorded Messages
1
Press the FUNC button until the display indicates
monitor.
NOTE: Use the front panel
handset to listen to messages.
MONITOR
Press the RUN button to select the message number.
2
3
MSG-01
Press the FUNC key until the desired message
number appears.
MSG-11
Press RUN to listen to the message.
4
As the message plays into the
handset, the display counts
down the message time.
mm:ss
Length of message.
DONE
Done playing message.
9
Playing Messages
Once messages have been recorded, they may be played over the
paging system as described below. Messages can also be queued by a
contact closure of one of the switch cable pair of the RJ-21 cable (See
Press the FUNC button until PLAY is displayed.
1
PLAY
Press the RUN button.
2
MSG-01
The first message is displayed.
Press the FUNC button to select a message other
than MSG-01 to play in.
3
MSG-09
Press RUN to play the message.
4
PLY-S09
Ply = Play, message #9 out off sequence.
DEL-S09
Configured delay between the messages
NOTE: If a contact closure
comes in on the RJ-21 cable,
the message sequence will
stop. The contact closure
message will play until the
closure is removed. The
sequence message will resume
where it left off.
10
Playing Messages in Sequence
A group or sequence of messages can be played to the output channel.
The maximum number of messages in a sequence can be up to 8
(determined by the DIP switch settings on the back panel). To add
messages to the sequence simply repeat the PLAY command, selecting
the message to be added each time.
Press the FUNC button until PLAY is displayed.
1
PLAY
Press the RUN button.
2
MSG-01
The first message is displayed.
Press the FUNC button to select a message other
than MSG-01 to play in:
3
MSG-09
4
Press RUN to play (and group) the message.
PLY-S09
Ply = Play, S = sequence message #9.
Repeat steps 1 through 4 to add up to 8 messages if
5
NOTE: If a contact closure
comes in on the RJ-21 cable,
the message sequence will
stop. The contact closure
message will play until the
closure is removed. The
sequence message will resume
where it left off.
11
Adding a Time Delay Between Message Plays
A time delay can be inserted before successive message plays. The
amount of time depends on the maximum time delay set on the option
DIP switch.
Press the FUNC button until DELAY appears.
1
DELAY
2
3
Press the RUN button to display the message
numbers.
MSG-01
Press the FUNC button to select the message number
to add the delay.
NOTE: A delay may only be
selected for a message which
has previously been recorded.
MSG-04
Press the RUN button to display the delay times.
4
5
DLY-0:05
Press the FUNC button to scroll the available delay
times.
DLY-0:30
30 second delay
Press the RUN button to accept the selected delay time.
6
7
DONE
Repeat steps 1 through 6 to add delays to other
message numbers.
12
Clearing a Message Sequence
The message sequence can be cleared leaving the
individual messages to be played separately.
1
2
3
Press the FUNC button until PLAY is displayed
PLAY
Press the RUN button.
MSG-01
Press the FUNC button until the following message is
displayed.
MSG-00
This is the message abort number.
Press RUN to clear the message sequence.
4
CLEARED
DONE
IDLE
13
Checking Message Times
The TIME function displays the time used for each message recorded.
It also displays the remaining time available in system memory to record
other messages.
1
2
Press the FUNC button until TIME appears.
TIME
Press the RUN button (once) to view message
numbers and recording time.
MSG-01
Message number.
mm:ss
Time used to record message in
minutes and seconds.
Once all messages and times are displayed, the
display indicates:
3
LEFT
Amount of time left on the system to
record other messages.
2:09
Available MDMU memory time in minutes
and seconds.
DONE
14
Reset Delay Times to Default
The INIT (initialize) function resets the operating parameters and delay
time to the default setting of five seconds without effecting the recorded
messages.
1
2
Press the FUNC button until INIT appears.
INIT
Press the RUN button.
SURE ?
Verification of command.
3
Press the RUN button again to initialize.
WAIT
DONE
Audio and Memory Tests
Two diagnostics tests are built into the MDMU internal software. The
audio test plays a 1000 Hz tone to the installed J1 output line. The
memory test clears all recorded messages and internally writes and
reads a number of test patterns to verify proper operation.
1
Audio Test
Press the FUNC button until TEST appears.
TEST
Press the RUN button to display the test options.
2
AUD TEST
Press the RUN button again to begin the test.
3
15
Press the FUNC button to end the continuous audio
test.
4
WAIT
IDLE
Press the FUNC button until TEST appears.
1
2
3
4
Memory Test
TEST
Press the RUN button to display the test options.
AUD TEST
Press the FUNC button to select the memory test.
MEM TEST
Press the RUN button to initialize the test.
SURE ?
Verification of memory test command.
Press the Run button again to begin the test.
5
CAUTION! The memory test
will erase all recorded and
stored messages.
ADD TEST
To cancel the memory test
command, press the FUNC
button.
0
This number indicates the number of times
the memory test has executed.
Press the FUNC button to end the test.
6
DONE
16
Telephone Access Operation
The MDMU may be accessed remotely using a DTMF (Touch Tone)
telephone. Telephone access can be made directly through a telephone
switching system with one of its analog stations connected to the MDMU
REM port.
Recording Messages
1
2
Dial the telephone extension of the MDMU.
Press
✽
7
(R for record) and the message number.
76 - record message number 6)
(for example,
✽
3
4
When you hear the beep, begin recording the
message.
Optionally, to send this message to a particular
paging zone, dial the zone number
now, then continue recording this message.
5
6
Press the
Press the
#
#
keys to end recording and save message.
key again to disconnect from the MDMU.
Listening to Recorded Messages
Dial the telephone extension of the MDMU.
1
2
Press
✽
6
(M for monitor) and the message number.
609 - monitor message number 9)
(for example,
✽
Press the
Press the
#
#
key to end monitoring message.
key again to disconnect from the MDMU.
17
Playing Messages
Dial the telephone extension of the MDMU.
1
2
Dial the message number to play over the public
address system (for example, 14, for message
number 14).
The message is played and added to the sequence of
messages playing.
Press the
#
key to disconnect from the MDMU.
Clearing a Message Sequence
1
Dial the telephone extension of the MDMU.
2
Press
0
(or 00 if set for 99 messages).
This action removes all messages from the sequence,
stops any contact closure message starts, and places
the MDMU in the IDLE state.
3
Press the
#
key to disconnect from the MDMU.
18
Specifications
Table 2 lists the specifications for the Multiple Digital Messaging Unit.
Table
2
Multiple Digital Messaging Unit Specifications.
■
■
115 VAC, 60 Hz, or 220 VAC, 50 Hz (specified on MDMU rear panel).
Power Supply
Height: 1.75 inches (4.4 cm).
Dimensions and
Weight
Width: 16.25 inches (41cm) without brackets, 19 inches (48.3 cm) with brackets attached.
Depth: 9.25 inches (23.5 cm).
■
■
■
■
■
Weight: 13 pounds (6 kg).
AC Power: MDL 0.25 amp Slow Blo.
Battery: MDL 2.0 amp Slow Blo.
Fuse Ratings
■
■
0 to +40 deg. C. (32 to 104 deg. F.) operational.
–40 to +66 deg. C. (–40 to +150 deg. F.) storage and shipment.
Temperature
Range:
■
■
■
■
■
5% to 95% (non-condensing) storage/shipment and operation.
Humidity Range:
Altitude:
Sea level to 10,000 ft. operational (1048 to 648 millibars) 40,000 ft. max. shipment.
Locate in an area free of excess moisture, corrosive gases, dust, and chemicals.
Allows up to two hours of operation during a power failure. Total charge time 48 hours.
Environmental
Battery Backup
Frequency
Response
– 200 Hz to 3.4 kHz ( +3 dB).
■
■
■
■
Adjustable to a maximum of –9 dBm.
Output Level
Handset: 220 ohm; Microphone: 600 ohms; Tape: 10K ohms.
8 KHz sampling rate, 8 bits/sample (PCM).
Input Impedance
Voice Encoding
50 pin, RJ-21 connector providing contact closure message starts.
Interconnect
Cable
19
DEFINITION
PIN
1
2
3
4
WIRE COLORS
WHITE
BLUE
J1 RING
CP 1 (C)
CP 1 (NC)
CP 1 (NO)
ORANGE
GREEN
BROWN
SLATE
WHITE
WHITE
WHITE
WHITE
RED
5
6
BLUE
ORANGE
GREEN
BROWN
SLATE
7
8
9
RED
RED
RED
RED
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
BLUE
BLACK
BLACK
BLACK
BLACK
BLACK
YELLOW
YELLOW
YELLOW
YELLOW
YELLOW
VIOLET
VIOLET
VIOLET
VIOLET
VIOLET
BLUE
ORANGE
GREEN
BROWN
SLATE
TIP 1
START 1 ( – )
START 1 ( + )
1
2
3
4
5
6
7
8
BLUE
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
RING 1
CP 1 ( C )
CP 1 ( NC )
CP 1 ( NO )
ORANGE
GREEN
BROWN
SLATE
START 2 ( – )
START 2 ( + )
BLUE
9
ORANGE
GREEN
BROWN
SLATE
WHITE
WHITE
WHITE
WHITE
START 3 ( – )
START 3 ( + )
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
START 4 ( – )
START 4 ( + )
ALARM ( NC )
RING REMOTE
J1 TIP
START 1 ( – )
START 1 ( + )
25
26
27
28
29
ORANGE
START 5 ( – )
START 5 ( + )
ALARM ( NO )
GREEN
BROWN
SLATE
30 WHITE
31 RED
START 6 ( – )
START 6 ( – )
ALARM ( C )
TIP REMOTE
START 2 ( – )
START 2 ( + )
BLUE
32 RED
33 RED
34 RED
35 RED
ORANGE
GREEN
BROWN
SLATE
RING REMOTE
START 3 ( – )
START 3 ( + )
36 BLACK
37 BLACK
38 BLACK
39 BLACK
40 BLACK
41 YELLOW
42 YELLOW
43 YELLOW
44 YELLOW
45 YELLOW
46 VIOLET
47 VIOLET
48 VIOLET
49 VIOLET
50 VIOLET
BLUE
ORANGE
GREEN
BROWN
SLATE
NOTE: The alarm contact
points are used for monitoring
the MDMU for unit failure.
START 4 ( – )
START 4 ( + )
ALARM (NC)
BLUE
ORANGE
GREEN
BROWN
SLATE
START 5 ( – )
START 5 ( + )
ALARM (NO)
BLUE
ORANGE
GREEN
BROWN
SLATE
START 6 ( – )
START 6 ( + )
ALARM ( C )
TIP REMOTE
Figure 9 50 Pin Connector and Wiring Code.
Table 3
20
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