Comdial Dsu II Digital Telephone System Instructions Manual

							2.13 Using The Music Interface
If music is to be part of the system, connect a customer-provided music source to the common
equipment music interface jack (phono jack) provided for this purpose. The impedance of this
input is approximately 500W. Use the volume control on the music source to adjust the audio
level of the music as required.
Music Interface
Music Source
(for music on hold
and background music)
DSU216
Using The Music Interface
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							2.14 Using The Add-On Expansion Modules
You can install optional add-on expansion modules to the DSU II common equipment base unit
to increase the line and station capacity of an installed system.
·The JM408 expansion module provides an additional four lines and eight digital proprietary
stations.
·The JM008 expansion module provides interface and ring generation for eight
industry-standard telephone devices.
Base Unit
TypeBase Unit Capacity
Expansion
Module TypeTotal System Capacity
LinesSystem
StationsLinesSystem
StationsISTs
J0408 4 8one JM408 8 16 -
one JM008 4 8 8
J0816 8 16one JM408 12 24 -
two JM408 16 32 -
one JM008 8 16 8
two JM008 8 16 16
one JM408 and
one JM00812 24 8
J1632 16 32one JM408 20 40 -
two JM408 24 48 -
one JM008 16 32 8
two JM008 16 32 16
one JM408 and
one Jm00820 40 8
2.14.1 Using The JM408 Module
The JM408 expansion module provides to an installed system an additional four lines and eight
digital proprietary stations. The default numbering of the expanded lines and stations begin with
the next higher line or station port number from that provided by the host base unit. The
numbering continues sequentially from top module to bottom module if two modules are
installed. For example: The defaulted 8-line, 16-station base unit provides station ports 10
through 25 and lines 1 through 8. When installed, a JM408 expansion module provides station
ports 26 through 33 and lines 9 through 12 thus creating a 12 line by 24 station system.
Each expansion module provides a tip and ring pair as an emergency power failure circuit. This
circuit is connected to the first module-provided line.
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							Connecting Lines To The JM408 Expansion Module
The expansion module’s line connections are available at two modular jacks. When facing the
jack openings, lines 1 and 2 are provided by the jack on the right and lines 3 and 4 are provided
by the jack on the left.
Line JackPin
NumberConnectionTelephone
Number
11 No Connection
2 Line 2M Tip
3 Line 1M Tip
4 Line 1MRing
5 Line 2M Ring
6 No Connection
21 No Connection
2 Line 4M Tip
3 Line 3M Tip
4 Line 3M Ring
5 Line 4M Ring
6 No Connection
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							Connecting Stations To The JM408 Expansion Module
The station connections are available at a 50-pin connector.
25-Pair Connections Two-Wire Connections Station Connections
Wire Color Pair Pin No.Clip
Term.Pair Wire Color Station Location
White-Blue
126 1
Signal PathGreen
1M
Blue-White 1 2 Red
White-Orange
227 3
Signal PathGreen
2M
Orange-White 2 4 Red
White-Green
328 5
Signal PathGreen
3M
Green-White 3 6 Red
White-Brown
429 7
Signal PathGreen
4M
Brown-White 4 8 Red
White-Slate
530 9
Signal PathGreen
5M
Slate-White 5 10 Red
Red-Blue
631 11
Signal PathGreen
6M
Blue-Red 6 12 Red
Red-Orange
732 13
Signal PathGreen
7M
Orange-Red 7 14 Red
Red-Green
833 15
Signal PathGreen
8M
Green-Red 8 16 Red
Red-Brown
934 17
Spare Pair Brown-Red 9 18
Red-Slate
1035 19
Slate-Red 10 20
Black-Blue
1136 21
Blue-Black 11 22
Black-Orange
1237 23
Orange-Black 12 24
Black-Green
1338 25
Green-Black 13 26
Black-Brown
1439 27
Brown-Black 14 28
Black-Slate
1540 29
Slate-Black 15 30
Yellow-Blue
1641 31
Blue-Yellow 16 32
Yellow-Orange
1742 33
Orange-Yellow 17 34
Yellow-Green
1843 35
Green-Yellow 18 36
Yellow-Brown
1944 37
Brown-Yellow 19 38
Yellow-Slate
2045 39
Slate-Yellow 20 40
Violet-Blue
2146 41
Blue-Violet 21 42
Violet-Orange
2247 43
Orange-Violet 22 44
Violet-Green
2348 45
Green-Violet 23 46
Violet-Brown
2449 47
Brown-Violet 24 48
Violet-Slate
2550 49
Signal PathTip
Power Fail Station
Slate-Violet 25 50 Ring
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							2.14.2 Using The JM008 Module
The JM008 expansion module provides an interface for a wide variety of industry-standard
telephone (IST) equipment such as 500 and 2500-type telephones, cordless telephones, voice
mail systems, answering machines, FAX machines, and data modems.
Each IST port drives a load with a maximum ringer equivalence number (REN) of 2.0. Check
the REN number of the connected IST equipment so you do not exceed the capacity of the IST
port.  Improper operation may result if you exceed the REN maximum.
The default numbering of the expansion module stations begin with the next higher station port
number from that provided by the host base unit. The numbering continues sequentially from top
module to bottom module if two modules are installed. For example: The defaulted 8-line,
16-station base unit provides station ports 10 through 25. When installed, a JM008 expansion
module provides station ports 26 through 33. A second JM008, when installed in the bottom
mounting location, provides station ports 34 through 41.
CAUTION
If you install both a JM408 and a JM008 on the same cabinet, you must install the JM408 at
the upper expansion module location or the lines provided by the JM408 will not function.
When you install the JM008 and connect IST devices to it, there are several programming
requirements that you must consider. Refer to Chapter 3, Section 3.10 for complete details.
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							Connecting Stations To The JM008 Module
The station connections are available at a 50-pin connector.
25-Pair Connections Two-Wire Connections Station Connections
Wire Color Pair Pin No.Clip
Term.Pair Connection Station Location
White-Blue
126 1
Signal PathTip
1M
Blue-White 1 2 Ring
White-Orange
227 3
Signal PathTip
2M
Orange-White 2 4 Ring
White-Green
328 5
Signal PathTip
3M
Green-White 3 6 Ring
White-Brown
429 7
Signal PathTip
4M
Brown-White 4 8 Ring
White-Slate
530 9
Signal PathTip
5M
Slate-White 5 10 Ring
Red-Blue
631 11
Signal PathTip
6M
Blue-Red 6 12 Ring
Red-Orange
732 13
Signal PathTip
7M
Orange-Red 7 14 Ring
Red-Green
833 15
Signal PathTip
8M
Green-Red 8 16 Ring
Red-Brown
934 17
Spare Pairs Brown-Red 9 18
Red-Slate
1035 19
Slate-Red 10 20
Black-Blue
1136 21
Blue-Black 11 22
Black-Orange
1237 23
Orange-Black 12 24
Black-Green
1338 25
Green-Black 13 26
Black-Brown
1439 27
Brown-Black 14 28
Black-Slate
1540 29
Slate-Black 15 30
Yellow-Blue
1641 31
Blue-Yellow 16 32
Yellow-Orange
1742 33
Orange-Yellow 17 34
Yellow-Green
1843 35
Green-Yellow 18 36
Yellow-Brown
1944 37
Brown-Yellow 19 38
Yellow-Slate
2045 39
Slate-Yellow 20 40
Violet-Blue
2146 41
Blue-Violet 21 42
Violet-Orange
2247 43
Orange-Violet 22 44
Violet-Green
2348 45
Green-Violet 23 46
Violet-Brown
2449 47
Brown-Violet 24 48
Violet-Slate
2550 49
Slate-Violet 25 50
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							Checking Industry-Standard Telephone Connections To The JM008 Module
When you connect industry-standard telephones to the JM008 expansion module, the maximum
distance allowed from the common equipment to the telephone is 1500 feet if you use #24 gauge
or larger, twisted pair cable.
Check the installation of industry-standard telephones for proper operation by performing the
following voltage measurements under the conditions listed:
– have both the common equipment and the stations connected to the station connector block,
– have bridging clips installed on the connector block,
– have the system powered and operational.
Measure DC voltage across the tip and ring pair of each installed industry-standard telephone
with a DC voltmeter. You should read:+24 volts DC+
/
-2 volts.
Call each industry-standard telephone to stimulate the ring generator assembly, and measure the
AC ringing voltage across the tip and ring pair of each called telephone.
You should read:55 volts AC+
/
-5 volts.
If your measured voltages are different from the values shown herein, it could indicate a wiring
error or equipment problem.
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							Installing An OPX Long Loop Adapter With The JM008
You must use an OPX long loop adapter if you wish to adapt the JM008’s IST station port to
support an off-premise IST application. An OPX long loop adapter connects to a single
telephone line and can greatly extend the line’s loop length (the Proctor Model 46222 adapter*,
for example, can extend line length to 30,000 feet).
*Proctor & Associates Company, Redmond WA
CAUTION
When you connect an OPX long loop adapter to an off-premise extension (OPX), you must
install primary protectors in series with the tip/ring pair of the telephone line that is routed to
the OPX. This action is necessary to protect both the user and the equipment from transient
voltage spikes that can travel through the cable. The telephone company offers basic
protection against this condition; however, that protection is usually designed to safeguard the
central office circuits and you cannot rely upon it to protect common equipment. To help
insure that external over-voltage surges do not damage the system, installation specialists
recommend that you install and properly ground gas discharge tubes or similar primary
protection devices on the telephone line that routes between the adapter and the OPX.
To install the OPX long loop adapter:
·Follow manufacturer’s instructions for unpacking, inspecting, mounting and wiring the
adapter unit.
·Plug a modular cable into the system jack on the adapter and connect the opposite end of
the cable to the JM008’s station port.
·Plug a modular cord into the telephone jack on the adapter and connect the opposite end of
the cord to the OPX line.
·Plug the adapter power cord into a standard 117 VAC, 3-wire electrical outlet.
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							2.14.3 Installing An Add-On Expansion Module
Each JM408 or JM008 add-on expansion module measures 15.5 wide x 9.4 high x 1.6 wide
and weighs approximately 4 pounds. The modules are designed so that you can attach them to
the base unit and connect them to it via cabling.
NOTE: If you plan to upgrade the system software at the same time that you add expansion
modules,
add the expansion modules first by following steps 1 through 11.  Then,
after you have installed the expansion modules and programmed for the new stations
and line ports, upgrade the software as described in the discussion titled,Loading
And Up-Grading The System Software.
To install an expansion module to a base unit, follow the procedure detailed in steps 1–11.
CAUTION
You must always connect the first module to the top location on the base unit.
1. Disconnect both AC power and external battery back-up power from the system.
2. Remove and set aside nameplate from base unit. This action exposes internal cable connector
on base unit circuit board.
3. Reach through opening in base unit and mate module cable plug with base unit circuit board
connectors.
4. Push excess cable inside base unit housing through connector opening.
5. Install expansion module in place on all four mounting holes. Be sure excess cable is not
pinched between add-on module and base unit.
6. Pull module down to latch in place.
7. Use appropriate screw driver to tighten module securing screw into base unit threaded
fastener.
8. Snap nameplate into slots on top of module housing.
9. Attach #10 or #12 insulated, solid copper wire between the frame ground stud on the
expansion module and the frame ground stud on the common equipment cabinet.
10. Reconnect the power to the system.
11. Refer to Chapter 3, and perform configuration programming for new station and line ports.
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							Typical Base Unit
Typical Add-On Module
(8-Line, 16-Station Base Unit)
Nameplate
(Remove to expose base
unit connectors)
To p
Location
Bottom
LocationUpper Mounting Holes
(2 Places)
Lower Mounting Holes
(2 Places)
Connecting Cable
and Plug
Snap Slots for
Nameplate Securing
ScrewGround
Modules
to Base
Unit
cajs111.cdr
Ground Base Cabinet
To Earth Ground.
Installing The Add-On Expansion Module
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