GAI-Tronics LE200-RM RACK-MOUNT PAGE/PARTY User manual

Pub. 42004-392G
GAI-TRONICS 3030 KUTZTOWN RD. READING, PA 19605
USA 610-777-1374 800-492-1212 Fax: [phone]
VISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
GAI-TRONICS®
AHUBBELL COMPANY
Model LE200-RM
Rack-Mount Page/Party®Line Extender
TABLE OF CONTENTS
Confidentiality Notice.....................................................................................................................1
General Information.......................................................................................................................1
Line Extender and Sub-Component Details.........................................................................................2
PCBA Access........................................................................................................................................................3
Audio Termination Connection Module – Optional Model 12118-011 Kit..........................................................4
Input/Output (I//O) Termination Connection Module – Optional Model 12118-012 Kit.....................................5
Main PCBA...........................................................................................................................................................6
Features and Functions..................................................................................................................7
Page Line Audio Transmission..............................................................................................................7
Page Line Audio Monitoring Output....................................................................................................8
Page Line Audio Detect Output Contact ..............................................................................................9
Page Line FSK Data Transmission (SmartSeries Systems) ................................................................9
Page Line 50 kHz VLC Transmission.................................................................................................10
Page Line Ground Fault Detection......................................................................................................10
Page Line Ground Fault Re-generation..............................................................................................11
Page Line Ground Fault Output Contact...........................................................................................11
Party Line Audio Transmission...........................................................................................................12
Party Line Off-Hook Regeneration.....................................................................................................12
Party Line Off-Hook Detection............................................................................................................13
Audio Line Connection Relays ............................................................................................................14
Audio Line Muting................................................................................................................................15
Page/Party® Line Balance.....................................................................................................................16
Contact Closure Inputs & Relay Outputs (I/0)..................................................................................17
Echo Cancellation.................................................................................................................................17
Manual Initiation of Echo Canceling ..................................................................................................................17
Data Links between Line Extenders.............................................................................................18
T1/E1 Data Link....................................................................................................................................18
Low Voltage Differential Signaling (LVDS) Data Link.....................................................................18
Configuring the Data Links .................................................................................................................19

Table of Contents Pub. 42004-392G
MODEL LE200-RM RACK-MOUNT PAGE/PARTY®LINE EXTENDER
GAI-TRONICS 3030 KUTZTOWN RD. READING, PA 19605 USA
610-777-1374 800-492-1212 Fax: [phone]
VISIT WWW.GAI-TRONICS.COM FOR PiiRODUCT LITERATURE AND MANUALS
T1/E1 Data Format Selection..............................................................................................................................19
T1 Line Build-out Settings..................................................................................................................................19
T1/E1 Receiver Equalization Gain Limit............................................................................................................20
T1/E1 Clock Source............................................................................................................................................20
T1/E1 Data Line Grounding ...............................................................................................................................21
LVDS Data Link Settings ...................................................................................................................................21
LVDS Port Indicators .........................................................................................................................................22
Typical Data Link Settings...................................................................................................................23
Point-to-Point Page/Party®System Connection..................................................................................................23
Point to Multi-point Page/Party®System Connection ........................................................................................24
Series Connection of Page/Party®System ..........................................................................................................25
Rules for Interconnecting More than Two Model LE200-RMs..........................................................................26
Installation ....................................................................................................................................28
Mounting................................................................................................................................................28
Tabletop Mounting .............................................................................................................................................28
Wiring....................................................................................................................................................28
Power Connections .............................................................................................................................................28
Page/Party®System Cable Connection...............................................................................................................28
T1/E1 Data Connections .....................................................................................................................................29
Contact Closure Input Connections ....................................................................................................................30
Contact Closure Output Connections..................................................................................................................31
Page Line Audio Monitoring Connections .........................................................................................................33
Verifying the Proper Line Balance Resistance ...................................................................................................34
Distributing Line Balance Resistance .................................................................................................................34
Fiber Optic Cable Connections............................................................................................................35
Fiber Optic Transceiver Set-Up...........................................................................................................36
Verification of Proper Operation ........................................................................................................................40
Summary of PC Board Connections and Settings.......................................................................41
Recording the Settings..................................................................................................................45
Testing and Troubleshooting........................................................................................................48
Generating Audio Test Signals............................................................................................................48
Function Testing....................................................................................................................................49
Specifications ................................................................................................................................50
Replacement Parts................................................................................................................................55
Frequently Asked Questions.........................................................................................................56

PUB.42004-392G
GAI-TRONICS 3030 KUTZTOWN RD. READING, PA 19605 USA
610-777-1374 800-492-1212 Fax: [phone]
VISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
GAI-TRONICS®
A HU BBEL LCO MPANY
Model LE200-RM
Rack-Mount Page/Party®Line Extender
Confidentiality Notice
This manual is provided solely as an operational, installation, and maintenance guide and contains
sensitive business and technical information that is confidential and proprietary to GAI-Tronics. GAI-
Tronics retains all intellectual property and other rights in or to the information contained herein, and such
information may only be used in connection with the operation of your GAI-Tronics product or system.
This manual may not be disclosed in any form, in whole or in part, directly or indirectly, to any third party.
General Information
The Model LE200-RM Rack-Mount Page/Party®Line Extender is used in pairs to extend the operating
distance of Page/Party®, SmartSeries or ICS Page/Party®systems. Two system cable segments are
connected through the Line Extender using either a two-pair copper cable or fiber optic cable depending on
the distance required. The local and remote cable segments are electrically isolated through the Line
Extenders. Refer to Figure 1 for a typical block diagram.
Figure 1. Typical System Block Diagram

Pub. 42004-392G
MODEL LE200-RM RACK-MOUNT PAGE/PARTY®LINE EXTENDER PAGE 2 of 56
e:\standard ioms - current release\42004 instr. manuals\42004-392g.doc
09/14
Line Extender and Sub-Component Details
Refer to Figure 2 below for dimensional information and sub-component layout of the LE200-RM Line
Extender.
Figure 2. Model LE200-RM Line Extender Outline

Pub. 42004-392G
MODEL LE200-RM RACK-MOUNT PAGE/PARTY®LINE EXTENDER PAGE 3 of 56
e:\standard ioms - current release\42004 instr. manuals\42004-392g.doc
09/14
PCBA Access
The Main PCBA can be easily accessed to set up switches and jumpers. Remove the two #6-32 screws
from the rear of the unit. Slide the PCBA support plate and PCBA out of the unit. See Figure 3.
Figure 3. Access to the Model LE200-RM Line Extender’s Main PCBA

Pub. 42004-392G
MODEL LE200-RM RACK-MOUNT PAGE/PARTY®LINE EXTENDER PAGE 4 of 56
e:\standard ioms - current release\42004 instr. manuals\42004-392g.doc
09/14
Audio Termination Connection Module – Optional Model 12118-011 Kit
The GAI-Tronics Model 12118-011 Kit must be used if the LE200-RM is to be connected directly to a
Page/Party®system. This kit consists of a ribbon cable for connection to the LE200-RM, an Audio
Termination Connection Module for connection to the Page/Party®system and mounting hardware. The
page line and party line 1–5 conductors of the Page/Party®system cable connect to the Audio Termination
Connection Module. This module also can provide the 33-ohm line balance resistance needed for the
audio lines. Audio line functions are described later in this manual.
Figure 4. Audio Termination Connection Module

Pub. 42004-392G
MODEL LE200-RM RACK-MOUNT PAGE/PARTY®LINE EXTENDER PAGE 5 of 56
e:\standard ioms - current release\42004 instr. manuals\42004-392g.doc
09/14
Input/Output (I//O) Termination Connection Module – Optional Model 12118-012 Kit
If the LE200-RM is to be connected directly to I/O wiring then the GAI-Tronics Model 12118-011 Kit is
required. This kit consists of a ribbon cable for connection to the LE200-RM, an I/O Termination
Connection Module and mounting hardware. The I/O Termination Connection Module is for connecting
the control wiring needed to send contact closures across the Line Extenders. I/O features and functions
are described later in this manual.
Figure 5. Input/Output (I/O) Connection Module

Pub. 42004-392G
MODEL LE200-RM RACK-MOUNT PAGE/PARTY®LINE EXTENDER PAGE 6 of 56
e:\standard ioms - current release\42004 instr. manuals\42004-392g.doc
09/14
Main PCBA
The Main PCBA contains all the central processing and line driver circuitry for the Line Extender. The
board contains numerous connectors, switches and jumpers for setting the Line Extender operating
parameters. Figure 6 below identifies the various components on the Main PCBA. Features and functions
of each are described later in this manual.
Figure 6. 69443-xxx Main PCBA

Pub. 42004-392G
MODEL LE200-RM RACK-MOUNT PAGE/PARTY®LINE EXTENDER PAGE 7 of 56
e:\standard ioms - current release\42004 instr. manuals\42004-392g.doc
09/14
Features and Functions
The Model LE200-RM Page/Party®Line Extenders provide the following features between Page/Party®
system cables.
Page Line Audio Transmission
A pair of Model LE200-RMs provides page line audio transmission between two Page/Party®system
cables. This transmission is half-duplex operation.
When the Line Extender detects a peak audio level equal or above a Peak Voltage Level Detection
Threshold, it immediately switches audio “on” in that direction for the Transmission Direction Hold
Time. Audio from the other direction is muted and ignored during that time. Audio is not switched “off”
until it is continuously below the Peak Voltage Level Detection Threshold for the Transmission Direction
Hold Time. The DIP switch SW2 positions 5–7, located on the Main PCBA, selects Peak Voltage Level
Detection Threshold and Transmission Direction Hold Time. Refer to Figure 6 for the location of switch
SW2 on the Main PCBA and Table 1 and Table 2 below for setting options.
Table 1. Transmission Direction Hold Time Settings on Main PCBA
SW2-5 SW2-6 Transmission Direction Hold Time
Open* Open * 1280 milliseconds
Closed Open 640 milliseconds
Open Closed 160 milliseconds
Closed Closed 40 milliseconds
NOTES:1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.
Table 2. Peak Voltage Level Detection Threshold on Main PCBA
SW2-7 Peak Voltage Level Detection Threshold
Open* −12 dB relative to nominal
Closed −24 dB relative to nominal
NOTES:1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.

Pub. 42004-392G
MODEL LE200-RM RACK-MOUNT PAGE/PARTY®LINE EXTENDER PAGE 8 of 56
e:\standard ioms - current release\42004 instr. manuals\42004-392g.doc
09/14
Page Line Audio Monitoring Output
The Model LE200-RM provides a balanced 600-ohm audio output for monitoring audio on both the local
and remote page lines. LE200-RM mixes the local and remote page line audio and routes it to the 600-
ohm audio output terminals. This audio can be sent to any external audio device (recorder, radio
transmitter, amplifier, etc.) with an input impedance equal to or greater than 600 ohms. The audio output
gain is adjustable using DIP switch SW3 positions 5–8 on the Main PCBA. Refer to Figure 6 for the
location of switch SW3 on the Main PCBA and Table 3 below for setting options.
Table 3. Page Line Monitor Output Gain Setting on Main PCBA
SW3-5 SW3-6 SW3-7 SW3-8 Monitor Output Gain
Open* Open* Open* Open* 0 dB
Closed Open Open Open −30 dB
Open Closed Open Open −27 dB
Closed Closed Open Open −24 dB
Open Open Closed Open −21 dB
Closed Open Closed Open −18 dB
Open Closed Closed Open −15 dB
Closed Closed Closed Open −12 dB
Open Open Open Closed −9 dB
Closed Open Open Closed −6 dB
Open Closed Open Closed −3 dB
Closed Closed Open Closed 0 dB
Open Open Closed Closed +3 dB
Closed Open Closed Closed +6 dB
Open Closed Closed Closed +9 dB
Closed Closed Closed Closed +12 dB
NOTES:1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.

Pub. 42004-392G
MODEL LE200-RM RACK-MOUNT PAGE/PARTY®LINE EXTENDER PAGE 9 of 56
e:\standard ioms - current release\42004 instr. manuals\42004-392g.doc
09/14
Page Line Audio Detect Output Contact
The Model LE200-RM provides a contact closure output that activates whenever audio is detected on the
page line. The contact can be set to close when audio is detected at the local page line, the remote page
line, or both. Typically this contact is used in conjunction with the Page Line Audio Monitoring Output to
provide a control contact to external devices or systems when page line audio is present. The contact
remains active for 1 second after the audio is no longer detected. DIP switch SW5 positions 6 and 7
enables or disables the output contact. Refer to Figure 6 for the location of switch SW5 on the Main
PCBA and Table 4 below for setting options.
Table 4. Page Line Audio Detect Contact Main PCBA
SW5-6 SW5-7 Audio Detect Contact Operation
Closed Closed Disabled
Open Closed Local page line audio activates the contact
Closed Open Remote page line audio activates the contact
Open* Open* Both local and remote page line audio activates the contact
NOTES:1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.
Page Line FSK Data Transmission (SmartSeries Systems)
A pair of Model LE200-RM Line Extenders re-generates the FSK data transmission between two
SmartSeries Page/Party®system cables. FSK data transmission occurs on the page line allowing
SmartSeries Page/Party®stations to communicate with the system control cabinet. For proper operation,
both Line Extenders must have this feature enabled by setting DIP switch SW5 position 1. Refer to Figure
6 for the location of switch SW5 on the Main PCBA and Table 5 below for setting options.
Table 5. Page Line FSK Transmission on Main PCBA
SW5-1 Page Line FSK Transmission
Open* FSK data is disabled.
Closed FSK data is enabled.
NOTES:1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.
NOTE:FSK operation and VLC operation (described below) cannot be enabled at the same time.
FSK operation is only used with SmartSeries systems.
VLC operation is only used within NON-SmartSeries systems. If both VLC and FSK are enabled at
the same time, neither feature will function correctly.

Pub. 42004-392G
MODEL LE200-RM RACK-MOUNT PAGE/PARTY®LINE EXTENDER PAGE 10 of 56
e:\standard ioms - current release\42004 instr. manuals\42004-392g.doc
09/14
Page Line 50 kHz VLC Transmission
A pair of Model LE200-RM Line Extenders re-generates the 50 kHz VLC control signal between two
Page/Party®system cables. 50 kHz VLC signaling occurs on the page line and is typically used to alter the
speaker volume of Page/Party®stations equipped VLC receivers. VLC signals may also be used for other
on/off control functions on some Page/Party®systems. For proper operation, both Line Extenders must
have this feature enabled by setting DIP switch SW5 position 2. Refer to Refer to Figure 6 for the location
of switch SW5 on the Main PCBA and Table 6 below for setting options.
Table 6. Page Line 50 kHz VLC Transmission Setting on Main PCBA
SW5-2 Page Line 50 kHz VLC Transmission
Open* 50 kHz VLC is disabled.
Closed 50 kHz VLC is enabled.
NOTES:1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.
NOTE:FSK operation and VLC operation (described above) cannot be enabled at the same time.
FSK operation is only used with SmartSeries systems.
VLC operation is only used within NON-SmartSeries systems. If both VLC and FSK are enabled at
the same time, neither feature will function correctly.
Page Line Ground Fault Detection
The Model LE200-RM Line Extenders provide page line ground fault detection on the local Page/Party®
system cable. If multiple LE200-RMs are connected to the same Page/Party®system cable segment, only
one page line ground fault detector may be enabled. A shorting clip setting at header P5 on the Main
PCBA enables the page line ground fault detection. Refer to Figure 6 for the location of header P5 on the
Main PCBA and Table 7 below for setting options:
Table 7. Page Line Ground Fault Detection Setting on Main PCBA
P5 Shorting Clip Page Line Ground Fault Detection
Pins 1–2* Page line ground fault detection is disabled.
Pins 2–3 Page line ground fault detection is enabled.
Removed Page line ground fault detection is disabled.
NOTES:
1. If connecting an LE200-RM to the same system cable segment as an ADVANCE Page/Party®
Interface (PPI) card, disable the LE200-RM page line ground fault detector. The PPI card contains the
ground fault detector. If both ground fault circuits are enabled simultaneously, intermittent
SmartSeries FSK data errors will occur between the PPI card and SmartSeries stations.
2. Changes to this parameter take effect without cycling power.
3. *Indicates default position.

Pub. 42004-392G
MODEL LE200-RM RACK-MOUNT PAGE/PARTY®LINE EXTENDER PAGE 11 of 56
e:\standard ioms - current release\42004 instr. manuals\42004-392g.doc
09/14
Page Line Ground Fault Re-generation
When a ground fault is detected at a remote LE200-RM Line Extender, the ground fault can be duplicated
on the local Page/Party®system cable. DIP switch SW5 position 3 enables regeneration of the ground
fault. Refer to Figure 6 for the location of switch SW5 on the Main PCBA and Table 8 below for setting
options.
Table 8. Page Line Ground Fault Regeneration Setting on Main PCBA
SW5-3 Page Line Ground Fault Regeneration
Open* Disabled - Page line ground faults detected on the remote system cable are NOT
regenerated on the local system cable.
Closed Enabled - Page line ground faults detected on the remote system cable are regenerated on
the local system cable.
NOTES:
1. The ground fault regeneration feature is used in SmartSeries systems to allow a ground fault on the
remote cable segment to be detected by the system control cabinet. Disable this feature if the Line
Extender is not installed in this type system.
2. Changes to this parameter take effect without cycling power.
3. *Indicates default position.
Page Line Ground Fault Output Contact
The Model LE200-RM provides a relay contact that activates whenever a ground fault is detected on the
local page line, remote page line or both the page lines. The ground fault detection feature (described
above) must be enabled. The contact output can be used to activate an external device or system which
annunciates the fault condition. The DIP switch SW5 positions 4 and 5 configure which page line ground
faults activate this contact. Refer to Figure 6 for the location of switch SW5 on the Main PCBA and Table
9 below for setting options.
Table 9. Page Line Ground Fault Contact Setting on Main PCBA
SW5-4 SW5-5 Page Line Ground Fault Contact
Closed Closed Disabled
Closed Open Remote page line ground fault activates the contact.
Open Closed Local page line ground fault activates the contact.
Open* Open* Both Local and Remote page line ground faults activate the contact.
NOTES:1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.

Pub. 42004-392G
MODEL LE200-RM RACK-MOUNT PAGE/PARTY®LINE EXTENDER PAGE 12 of 56
e:\standard ioms - current release\42004 instr. manuals\42004-392g.doc
09/14
Party Line Audio Transmission
A pair of Model LE200-RM Line Extenders provides full duplex party line audio between two Page/Party®
system cables, for party lines 1–5. During on-hook conditions of the party lines (meaning no handset
stations are in use), the LE200-RM will mute the local party line analog circuits. If it is necessary to have
party line audio enabled even when no stations are off-hook, DIP switch SW6-3 may be closed to disable
this muting feature. This switch affects the on-hook muting function of all five party lines simultaneously.
Refer to Figure 6 for the location of switch SW6 on the Main PCBA and Table 10 below for setting
options.
Table 10. Party Line On-Hook Muting Setting on Main PCBA
SW6-3 Party Line On-Hook Muting
Open* Enabled – local party lines are muted when no handset stations are in-use.
Closed Disabled – party line audio is never muted.
NOTES:1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.
Party Line Off-Hook Regeneration
When an off-hook handset station is detected, the LE200-RM can transmit the off-hook condition to
remote Line Extenders so that it is duplicated on the remote Page/Party®system cable. Typically this
feature is used in systems that contain a telephone interface device so that the caller is transferred to the
party line when a handset station answers the call. DIP switch SW6 position 2 is used to enable this
feature. This switch affects the off-hook regeneration function of all five party lines. Refer to Figure 6 for
the location SW6 on the Main PCBA and the Table 11 below for setting options.
Table 11. Off-Hook Regeneration on Main PCBA
SW6-2 Off-Hook Regeneration Setting
Open* Enabled – an off hook condition on the local party line is regenerated at the
remote Line Extender.
Closed Disabled
NOTES:1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.

Pub. 42004-392G
MODEL LE200-RM RACK-MOUNT PAGE/PARTY®LINE EXTENDER PAGE 13 of 56
e:\standard ioms - current release\42004 instr. manuals\42004-392g.doc
09/14
Party Line Off-Hook Detection
The Model LE200-RM Line Extenders provide off-hook detection on the local Page/Party®system cable
for party lines 1 through 5. An off-hook condition means a handset station is in use. If multiple Line
Extenders are connected to the same Page/Party®system cable segment, only one off-hook detector can be
enabled. If connecting an LE200-RM to the same system cable segment as an ADVANCE Page/Party
Interface (PPI) card, disable the LE200-RM off-hook detection for party lines 1 and 2. The PPI card
contains off-hook detection for party lines 1 and 2.
Several shorting clips (P6–P15) are used to enable the off-hook detection feature on party line 1 through 5.
Two shorting clips are associated with each party line and must be set to the same position for proper
operation. The party lines 1–5 are configured independently. Refer to Figure 6 for the location of P6–P15
on the Main PCBA and Table 12 below for setting options.
Table 12. Party Line Off-Hook Detection Setting on Main PCBA
Party Line Headers Shorting Clip Off-Hook Detection
Party Line 1 P15, P14
Pins 1–2* Disabled
Pins 2–3 Enabled
Removed Disabled
Party Line 2 P13, P12
Pins 1–2* Disabled
Pins 2–3 Enabled
Removed Disabled
Party Line 3 P11, P10
Pins 1–2* Disabled
Pins 2–3 Enabled
Removed Disabled
Party Line 4 P9, P8
Pins 1–2* Disabled
Pins 2–3 Enabled
Removed Disabled
Party Line 5 P7, P6
Pins 1–2* Disabled
Pins 2–3 Enabled
Removed Disabled
NOTES:
1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.

Pub. 42004-392G
MODEL LE200-RM RACK-MOUNT PAGE/PARTY®LINE EXTENDER PAGE 14 of 56
e:\standard ioms - current release\42004 instr. manuals\42004-392g.doc
09/14
Audio Line Connection Relays
The Model LE200-RM has relays that disconnect the page, party lines 1–5 and the page monitoring output
connections from the Main PCBA. The disconnect feature is used for special applications such as
connection of a single party line system or other scenarios in which a particular audio line is not physically
connected to the Line Extender. DIP switch SW4 is used to control the audio line disconnect feature.
Refer to Figure 6 for the location of SW4 on the Main PCBA and Table 13 below for setting options.
Table 13. Audio Line Connection Relay Settings on Main PCBA
Audio Line Switch SW4 Setting Field Wiring
Party line 5 SW4-1 Open Disconnected
Closed* Connected
Party line 4 SW4-2 Open Disconnected
Closed* Connected
Party line 3 SW4-3 Open Disconnected
Closed* Connected
Party line 2 SW4-4 Open Disconnected
Closed* Connected
Party line 1 SW4-5 Open Disconnected
Closed* Connected
Page line SW4-6 Open Disconnected
Closed* Connected
Page monitor SW4-7 Open Disconnected
Closed* Connected
N/A SW4-8
Open Not used
Closed*
NOTES:1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.

Pub. 42004-392G
MODEL LE200-RM RACK-MOUNT PAGE/PARTY®LINE EXTENDER PAGE 15 of 56
e:\standard ioms - current release\42004 instr. manuals\42004-392g.doc
09/14
Audio Line Muting
In some system configurations, the Page/Party®system cable is not connected to the Line Extender. In this
case, all audio lines (page and party lines 1–5) should be muted since they are not physically connected.
DIP switch SW6 position 4 on the Main PCBA enables this feature. If this feature is enabled, it is
unnecessary to disconnect the audio lines using the audio line relays (mentioned above). Refer to Figure 6
for the location of SW6 on the Main PCBA and Table 14 below for setting options.
Table 14. Audio Line Mute Setting on Main PCBA
SW6-4 Mute Analog Lines Setting
Open* Disabled - Party lines 1–5 and page line are operational.
Closed Enabled - Party lines 1–5 and page line are muted.
NOTES:1. Changes to this parameter take effect without cycling power.
2. *Indicates default position.

Pub. 42004-392G
MODEL LE200-RM RACK-MOUNT PAGE/PARTY®LINE EXTENDER PAGE 16 of 56
e:\standard ioms - current release\42004 instr. manuals\42004-392g.doc
09/14
Page/Party® Line Balance
For proper system operation, the page line and party lines 1–5 must be terminated with a resistance of
approximately 33 ohms. The Model LE200-RM provides potentiometers to set the line balance resistance
on the page line and five party lines. The line balance resistors are located on the Audio Termination
Connection Module (part of Model 12118-011 Kit) next to the page and party line terminal blocks. The
line balance resistors are adjustable or can be disabled using shorting clips P1–P7.
If connecting an LE200-RM to the same system cable segment as an ADVANCE Page/Party Interface
(PPI) card, disable the line balance for party lines 1, 2 and the page line. The PPI card provides the line
balance resistors for these audio lines. Refer to Figure 4 for the location of the jumpers and potentiometers
on the Audio Termination Connection Module and the Table 15 for setting details.
Table 15. Page/Party®Line Balance Settings on Audio Termination Connection Module
Audio Line Header Shorting Clip Line Balance Adjustment Potentiometer
Party line 5 P6
Pins 1–2* Disabled
R23Pins 2–3 Enabled
Removed Disabled
Party line 4 P3
Pins 1–2* Disabled
R19Pins 2–3 Enabled
Removed Disabled
Party line 3 P1
Pins 1–2* Disabled
R3Pins 2–3 Enabled
Removed Disabled
Party line 2 P2
Pins 1–2* Disabled
R4Pins 2–3 Enabled
Removed Disabled
Party line 1 P4
Pins 1–2* Disabled
R20Pins 2–3 Enabled
Removed Disabled
Page line P7
Pins 1–2* Disabled
R24Pins 2–3 Enabled
Removed Disabled
NOTES:*Indicates default position.

Pub. 42004-392G
MODEL LE200-RM RACK-MOUNT PAGE/PARTY®LINE EXTENDER PAGE 17 of 56
e:\standard ioms - current release\42004 instr. manuals\42004-392g.doc
09/14
Contact Closure Inputs & Relay Outputs (I/0)
Five independent contact closures can be transmitted across a pair of Line Extenders meaning that an
active input contact on the local Line Extender results in the corresponding output relay contact energizing
on the remote Line Extender. Contact closures are bi-directional.
Example: Closing a switch contact across input #1 of the local Line Extender results in relay output #1
activating on the remote Line Extender and vice versa. When the input contact is removed the
corresponding output relay de-activates. No switch or jumper setting is required on the Main PCBA for
configuring the I/O feature.
NOTE:Any active output contacts will deactivate if the data link is broken between the Line Extenders.
Echo Cancellation
Line echo (also known as electric or hybrid echo) is created by the electrical circuitry connected to a two-
wire (full duplex) audio system. Echo is inherent in all full-duplex audio systems and is affected by the
audio line length and line impedance mismatches. The presence of audible echoes results in undesirable
audio quality. This kind of quality degradation is inherent in network equipment and end-user phone
devices.
To minimize echo, the Model LE200-RM performs an echo cancellation sequence on party lines 1 through
5. The echo cancellation process takes approximately 15 seconds and is performed automatically one
minute after power is applied to the LE200-RM. This delay allows all power levels to stabilize prior to
performing echo cancellation.
NOTE:Signal impulses are transmitted onto the party lines during the echo cancellation process. Handset
stations that are in use on a party line will hear the signals in the handset receiver. For troubleshooting
purposes, the 1-minute delay may be disabled by closing DIP switch SW6 position 1. Refer to Figure 6 for
the location of SW6 on the Main PCBA and Table 16 below for setting details.
Table 16. Echo Cancellation Power-On Delay Setting on Main PCBA
SW6-1 Echo Cancellation Power-On Delay
Open* 1 minute
Closed No delay
NOTES:1. Changes to this parameter take effect when cycling power.
2. *Indicates default position.
Manual Initiation of Echo Canceling
Echo cancellation can be manually initiated as described below.
Press and release push button PB1 on the Main PCBA three times. The push button must be pressed for at
least 0.25 second and no more than 2 seconds each time. The timing requirement is meant to prevent
accidental requests. If an error is made with the push-button timing, the sequence must be repeated from
the beginning.
The LEDs on the Main PCBA will indicate the progress of the echo canceling sequence. One column of
LEDs turns on after each push button press release until the sequence is started. Once the sequence is
started, those LEDs remain on, and a countdown timer is displayed on the remaining LEDs. The LEDs
turn OFF after the echo cancellation training sequence is complete.

Pub. 42004-392G
MODEL LE200-RM RACK-MOUNT PAGE/PARTY®LINE EXTENDER PAGE 18 of 56
e:\standard ioms - current release\42004 instr. manuals\42004-392g.doc
09/14
Data Links between Line Extenders
The LE200-RM is equipped with two different data link types for connecting to another Line Extender.
The two data types are T1/E1 and Low Voltage Differential Signaling (LVDS). The type of data
connection(s) required is determined by the system architecture. It is possible to use both types at the
same time to achieve complex system architectures. Each data type, the intended use, and the applicable
switch settings are described below.
T1/E1 Data Link
The T1/E1 data link connection is the most common and is used when one pair of Model LE300 Line
Extenders are connected in point to point system architecture over a long distance. The T1/E1 carrier
technology uses dedicated copper cable or fiber optic cable when equipped with a T1/E1 fiber optic
modem. The distance between Line Extenders determines the type of connection needed. Copper wire
connections between the Line Extenders require a two-pair cable and will operate at a distance of up to
6000 feet using No. 22 AWG wire. For distances greater than 6000 feet, a T1/E1 fiber optic transceiver
and fiber optic cable must be used.
NOTE:The Model LE200-RM is NOT designed for use with the public switched telephone network.
Low Voltage Differential Signaling (LVDS) Data Link
The LVDS data link connection is used to connect two or more LE200-RM Line Extenders in a “daisy
chain” fashion when the Line Extenders are located within 10 meters of each other. The LVDS data link
requires a straight-through CAT5e cable between Line Extenders. Each Line Extender contains an LVDS
data “in” port and an LVDS data “out” port. The “out” port of the first Line Extender connects to the “in”
port of the next Line Extender. This connection scheme can be used to link up to a maximum of eight Line
Extenders and is typically used when multiple Line Extenders are installed in a central location.