GE JungleMUX 86445-31 User manual

JungleMUX
SONET Multiplexer
86445 2W FXS/PLAR UNIT
3
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Technical Practice
and
Installation Manual
Copyright © GE Multilin Inc. 2002

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Copyright GE Multilin Inc. 2002
JungleMUX
SONET Multiplexer
Technical Practice and Installation Manual
Copyright GE Multilin Inc. 2002, All Rights Reserved
The copyright of this document is the property of GE Multilin Inc. This document must not be
copied, reprinted or reproduced in any material form, either wholly or in part, without the written
consent of GE Multilin Inc.
GE Multilin Inc. reserves the right to make changes and modifications to any part of this
document without notice.
GE Multilin Inc. is not responsible for any damages or losses incurred as a result of out-of-date or
incorrect information contained in this document.

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TABLE OF CONTENTS
SECTION PAGE
PART 1
86445-31 2W FXS/PLAR Unit (Single-Channel)
1.1 INTRODUCTION..............................................11
Related Publication and Documentation Support............................11
Handling and Packing.........................................................................12
1.2 UNIT OVERVIEW.............................................13
Test Features.......................................................................................14
1.3 FRONT PANEL FEATURES ...........................15
LED Indications ...................................................................................15
Bantam Jack ........................................................................................15
Push-button (ACK)..............................................................................15
Craft Interface (C.I.) Jack....................................................................16
1.4 UNIT DESCRIPTION .......................................17
Transmit Voice Path............................................................................17
Receive Voice Path .............................................................................18
Transmit Signaling..............................................................................19
Receive Signaling ...............................................................................19
Ringing Generator Sub-Assembly.....................................................20
Microprocessor Operation .................................................................20
1.5 INSTALLATION...............................................22
Pre-installation ....................................................................................22
Shelf Position ......................................................................................23
Power Requirements ..........................................................................24

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SECTION PAGE
Inserting the Unit in the Shelf ............................................................24
Removing the Unit from the Shelf .....................................................24
Paddleboard Connections..................................................................25
Paddleboard Installation................................................................... 25
1.6 CONFIGURATION...........................................26
General Information ............................................................................26
Context-Sensitive Help ..................................................................... 28
Configure button ............................................................................... 28
Undo button ....................................................................................... 28
Cancel button..................................................................................... 28
Copy and Paste buttons ................................................................... 28
Field Descriptions ...............................................................................29
Channel Setup ................................................................................... 29
Signalling Setup ................................................................................ 29
VF Setup ............................................................................................. 29
Unit Location...................................................................................... 30
Test Setup .......................................................................................... 31
Talk Battery and Ringing Generator..................................................32
Signalling Monitor ............................................................................. 33
Unit Monitor ....................................................................................... 33
1.7 MAINTENANCE and TROUBLESHOOTING..34
Context-Sensitive Help .......................................................................34
Alignment.............................................................................................34
Bantam Jack ........................................................................................34
Signaling Tests....................................................................................34
Loopback Commands.........................................................................35
Troubleshooting..................................................................................35
1.8 UNIT PARAMETERS.......................................37
Transmission Levels...........................................................................37
Line Impedance ...................................................................................37
Network Build-Out Capacitance.........................................................37
Frequency Response ..........................................................................37
Tracking ...............................................................................................38
Idle Channel Noise ..............................................................................38

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SECTION PAGE
Impulse Noise......................................................................................38
Single Frequency Distortion ..............................................................39
Intermodulation Distortion .................................................................39
Envelope Delay Distortion..................................................................39
Signal to Total Distortion....................................................................39
Return Loss .........................................................................................40
Longitudinal Balance..........................................................................40
Crosstalk..............................................................................................40
Relative Transhybrid Loss .................................................................40
Signaling Modes..................................................................................41
Battery Voltage....................................................................................41
Line Current.........................................................................................41
External Circuit Resistance................................................................41
Internal Resistance .............................................................................41
Ringing Supply....................................................................................42
Ringing Cadence.................................................................................42
Ringing Duration .................................................................................42
Ring Trip ..............................................................................................42
Signaling States ..................................................................................42
1.9 SPECIFICATIONS ...........................................44
Physical................................................................................................44
Electrical ..............................................................................................44
Environmental .....................................................................................44
Mechanical...........................................................................................45
EMI/RFI .................................................................................................45
Isolation ...............................................................................................45
Reliability .............................................................................................45
1.10 ORDERING INFORMATION .........................46
Equipment and Option Code List ......................................................46

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SECTION PAGE
PART 2
86445-32 2W FXS/PLAR Unit (Dual Channel)
2.1 INTRODUCTION..............................................48
Related Publication and Documentation Support............................48
Handling and Packing.........................................................................49
2.2 UNIT OVERVIEW.............................................50
Test features........................................................................................51
2.3 FRONT PANEL FEATURES ...........................52
LED Indications ...................................................................................52
Bantam Jacks ......................................................................................52
Push-button (ACK)..............................................................................53
Craft Interface (C.I.) Jack....................................................................53
2.4 UNIT DESCRIPTION .......................................54
Transmit Voice Path............................................................................55
Receive Voice Path .............................................................................55
Transmit Signaling..............................................................................56
Receive Signaling ...............................................................................56
Microprocessor Operation .................................................................56
2.5 INSTALLATION...............................................59
Pre-installation ....................................................................................59
Shelf Position ......................................................................................59
Power Requirements ..........................................................................60
Inserting the Unit in the Shelf ............................................................61
Removing the Unit from the Shelf .....................................................61
Paddleboard Connections..................................................................62
Paddleboard Installation................................................................... 62

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SECTION PAGE
2.6 CONFIGURATION...........................................63
General Information ............................................................................63
Context-Sensitive Help ..................................................................... 64
Configure button ............................................................................... 65
Undo button ....................................................................................... 65
Cancel button..................................................................................... 65
Copy and Paste buttons ................................................................... 65
Field Descriptions ...............................................................................66
Channel Setup ................................................................................... 66
Signalling Setup ................................................................................ 66
VF Setup ............................................................................................. 67
Test Setup .......................................................................................... 67
Signalling Monitor ............................................................................. 69
Unit Location...................................................................................... 70
Unit Monitor ....................................................................................... 70
2.7 MAINTENANCE and TROUBLESHOOTING..71
Context-Sensitive Help .......................................................................71
Alignment.............................................................................................71
Bantam Jacks ......................................................................................71
Signaling Tests....................................................................................71
Loopback Commands.........................................................................72
Troubleshooting..................................................................................72
2.8 UNIT PARAMETERS.......................................73
Transmission Levels...........................................................................73
Line Impedance ...................................................................................73
Network Build-Out Capacitance.........................................................73
Frequency Response ..........................................................................73
Tracking ...............................................................................................74
Idle Channel Noise ..............................................................................74
Single Frequency Distortion ..............................................................74
Envelope Delay Distortion..................................................................74
Signal to Total Distortion (Signal to Noise) Ratio ............................74
Return Loss .........................................................................................75
Relative Transhybrid Loss .................................................................75
Signaling Modes..................................................................................75

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SECTION PAGE
On-Hook Battery Voltage....................................................................75
Off-Hook Line Current ........................................................................75
Customer Loop Resistance................................................................75
REN connected to line ........................................................................76
Ringing Supply....................................................................................76
Ringing Cadence.................................................................................76
Ringing Duration .................................................................................76
Ring Trip ..............................................................................................76
Signaling States ..................................................................................76
2.9 SPECIFICATIONS ...........................................78
Physical................................................................................................78
Electrical ..............................................................................................78
Environmental .....................................................................................79
Mechanical...........................................................................................79
EMI/RFI .................................................................................................79
Isolation and Line Protection .............................................................79
Reliability .............................................................................................80
2.10 ORDERING INFORMATION .........................81
Equipment and Option Code List ......................................................81
Appendixes
APPENDIX A ..........................................................82
TLP Settings ........................................................................................83
APPENDIX B ..........................................................85
JCI Screen Information for 86445-31 Unit .........................................85
VF Setup...............................................................................................86
Signalling Setup ..................................................................................87
Address Data .......................................................................................87
Test Setup............................................................................................88
Talk Battery and Ringing Generator..................................................90

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SECTION PAGE
Signalling Monitor...............................................................................91
APPENDIX C ..........................................................92
List of Figures .....................................................................................92
List of Tables .......................................................................................93
APPENDIX D ..........................................................94
List of Acronyms.................................................................................94

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Part 1
86445-31
2W FXS/PLAR Unit
(Single-Channel)*
* Discontinued in Q4 2005

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1.1 INTRODUCTION
The 86445-31 2W FXS (single-channel) unit is one of the family of units in the
GE Multilin’s JungleMUX digital transport/access system designed specifically for
the requirements of the utility (Power, Transportation, Pipelines, Oil & Gas, etc.)
industry using optical fiber transmission.
The 86445-31 2W FXS/PLAR unit provides the interface between a 2-wire VF
line with FXS (Foreign Exchange Station) or PLAR (Private Line Automatic
Ringdown) signaling and a JungleMUX node. Note that there is also a dual-
channel version of this unit (86445-32) providing two such interfaces. The two
units implement completely different hardware solutions and therefore are
described separately.
The Part 1 of this manual explains how to operate, install and maintain the
86445-31 2W FXS (single-channel) unit. A unit description and block diagram
are included as well as a detailed description of the unit's operation. The 86445-
32 2W FXS (dual-channel) unit is addressed in Part 2.
Engineering documentation includes EAS schematics for all unit circuitry.
Related Publication and Documentation Support
Additional information is provided in the JungleMUX Technical Overview and
Reference Manual for system planning and engineering. The user may also find
useful information in Technical Practice and Installation Manuals (TPIMs) for
other JungleMUX units.
Customer inquires for information contained in this manual should be directed to
JungleMUX Product Line Management. GE Multilin appreciates notification of
any possible errors or omissions contained herein.
Shipped with all purchased JungleMUX nodes is a Node Assignment Drawing
(NAD), which provides necessary configuration details for the units and shelf
location. Channel, VT and JIFport are some of the assignments that are shown
on the NAD.

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Handling and Packing
Equipment with Electrostatic Discharge Sensitive (ESDS) devices or components
must be shipped in protective containers and necessary handling precautions
observed; otherwise, all warranties, expressed or implied, will be considered null
and void.
The following Electronic Industries Association (EIA) attention label appears on
all GE Multilin EAS schematics and should be attached on all containers used for
ESDS items to alert personnel that the contents requires special handling.
HANDLE & ASSEMBLE
THIS UNIT CONTAINS STATIC SENSITIVE DEVICES
PER 562-48043-01
SENSITIVE
ELECTROSTATIC
OBSERVE PRECAUTIONS
FOR HANDLING
ATTENTION
DEVICES

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1.2 UNIT OVERVIEW
The 86445-31 2W FXS/PLAR unit provides the interface between a 2-wire VF
line with FXS (Foreign Exchange Station) or PLAR (Private Line Automatic
Ringdown) signaling and a JungleMUX node.
The unit is equipped with an on-board ringing generator and talk battery.
Optionally, an external ringing generator and talk battery can be connected
instead.
The 86445-31 FXS unit can be configured for one of the following modes of
operation:
• 2W FXS/LS for loop start signaling applications
• 2W FXS/GS for ground start signaling applications
• 2W PLAR for private line automatic ringdown applications
The unit supports one VF channel and occupies one DS0 channel on a JVT bus.
Depending on the application, it can be used with 86445-4X 2W FXO unit,
86445-3X 2W FXS unit or 86444-07 4W VF unit at the far end.
Transmit level (-14.0dBm to +6.0dBm) and receive level (-15.0dBm to +5.0dBm)
are software adjustable in 0.1 dB increments.
The unit's line impedance can be set to either 600Ωor 900Ωwith or without
2.15 µF of line capacitance connected in series. Additional capacitance, called
Network Build-out Capacitance (NBOC), can be used for line capacitance
compensation. This is selectable to 0, 22, 47 or 69 nF.
A front panel yellow LED, when steady on, indicates the busy state of the Tip and
Ring terminals. Blinking yellow LED indicates either dial pulsing or ringing.
A front panel bantam jack allows access to the 2W VF port on a splitting or
bridging basis (user-configurable).
The unit setup and signaling status is reported via VistaNET or via legacy JCI
and JNCI software.
Connections to drop equipment are made on the 86445-91 paddleboard
assembly, which is required for each 86445-31 2W FXS unit.

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When the unit is configured for the PLAR mode (and unit Micro version is 2.05 or
later), the ringing cadence type and ringing duration are programmable. The
ringing cadence can be set for the North American type, European type, or for
steady ringing while the ringing duration can be set to 10 sec, 20 sec or
"indefinite".
Test Features
The unit has built-in signaling test features that allow sending a specific, user-
selectable signaling condition to the far-end unit and/or to the local drop
equipment. The list of available signaling conditions depends on the unit's mode
of operation (loop-start, ground-start or PLAR signaling).
The unit supports Analog Loopback that can be enabled through the software.

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1.3 FRONT PANEL FEATURES
LED Indications
ALM (red)
Denotes an alert from the unit's internal self-check
feature. Internal unit monitoring of DC-DC converter
and unit temperature are performed.
BUSY (yellow)
Indicates current signaling status of the unit. LED on
denotes a busy (off-hook) state. Blinking LED indicates
either dial pulsing or ringing.
Bantam Jack
Allows test set access to the 2W VF signal and can be
configured for splitting or bridging.
Push-button (ACK)
The first use of the push-button is a LED and microprocessor test. If the 2W
FXS unit is operating normally, holding the front panel pushbutton down causes
all the LEDs to light. The main use for this test is to determine that the front
panel LEDs are functional and that the microprocessor firmware code is running
normally (microprocessor is not locked up).
Note: The microprocessor test does not cause any disruption in traffic.
The second use of the push-button is to put the unit into a "sleep state". This
state is enabled when the 2W FXS unit is inserted in the shelf with the ACK
button pressed. In this condition, the micro ignores all settings until a local
VistaNET or JCI connection is established to the unit’s CI port. On establishing
this connection, the software will automatically clear the unit’s Channel setting
2W VF FXS UNIT
C.I.
86445-31
ACK ALM
BUSY
T/R
LENTRONICS
MULTIPLEXERS
2W VF FXS UNIT
C.I.
86445-31
ACK ALM
BUSY
T/R
LENTRONICS
MULTIPLEXERS
Figure 1: Front
Panel Layout

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(will set it to “–“) at which point the user can configure the unit to the desired
settings. If the unit is inserted with the ACK button pressed and then removed
and inserted normally (no local VistaNET or JCI connected), all previous settings
will remain.
Note: Inserting the unit into the equipment shelf without the ACK button pressed
may cause a traffic disruption in an in-service system.
Craft Interface (C.I.) Jack
The Craft Interface allows a user to connect a PC computer serial (COM) port to
the unit. The CI is an RJ-11 connector, which transmits and receives a 9600 b/s
RS-232 signal. A Microsoft-Windows-based VistaNET software and legacy DOS-
based JCI (JungleMUX Craft Interface) software allow the user to configure the
unit and monitor its status through the CI port.

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1.4 UNIT DESCRIPTION
The 86445-31 FXS unit contains a main assembly board (087-86445-03) and
subassembly board (087-86445-04). The main board consists of a Subscriber
Line Interface Circuit (SLIC) which provides battery feed with subscriber loop
current limiting, overvoltage protection, ring relay driver, supervisory signaling,
and hybrid functions. A PCM CODEC filter performs input and output level
adjustment, transmit and receive filtering, hybrid balancing and µ-law PCM
encoding and decoding. A Programmable Logic Gate Array (PLGA) generates
timing signals for processing digital PCM and signaling information from a single
channel into a JVT format. A micro-controller controls and monitors various unit
parameters.
The subassembly board contains the DC-to-DC converter (talk battery) and
ringing generator necessary for telephone operation.
The 86445-31 FXS unit is capable of a local analog loopback that ignores the
local input signal and loops back the far-end receive signal to the remote end.
All user connections are made to the 86445-91 Interconnect Paddleboard. Tip
and Ring connections as well as external Ringing Generator connections and
external Battery Supply connections are provided on one screw type terminal
block. All pinout arrangements are provided in the Installation portion of the
manual.
A simplified Block Diagram has been included at the end of this section and can
be used for reference for the following signal paths analysis, however the user
should refer to schematics EAS-86445-31 for complete circuit descriptions.
Transmit Voice Path
The analog voice signal (at -14.0 to +6.0 dBm level) is sent from the T, R
balanced input at the Paddleboard TB1(1,2) to the back connector J1(A3,A4).
The signal is sent via bantam jack J5 to the Subscriber Line Interface Circuit
(SLIC) U14(22,24) which acts as the 2W to 4W hybrid and as a summing
amplifier to reject Tip and Ring common signals. The signal output from U14(32)
is a function of the differential voltage appearing across resistors R27 and R29.

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The signal is connected to the input of uncommitted op-amp IN1 U14(20) in the
SLIC through resistor R35. The op-amp feedback circuit (IN1 and OUT1)
depends on the placement of jumpers J7, J8, J9 and J10.
Jumper J7 defines line impedance of 600 or 900 ohms; J8 selects whether the
impedance is resistive only or in series with a 2.1 µF capacitor; while J9 and J10
provide for the addition of more Network Build Out Capacitance (NBOC). This
series compromise network provides impedance matching and proper trans-
hybrid return for cancellation in COMBO balance filters.
U14(19) outputs the signal to the COMBO Transmit Amplifier U15(28). The PCM
filter in U15 passes signals between 300 and 3400 hertz and performs the A-D
conversion with µ-255 companding law. The encoded data is shifted out of
U15(18) to the Programmable Logic Gate Array U5(39).
U5 performs the logical "or-ing" of the data signal with various byte information
signals and outputs the data on U5(62,59) to the JVT shelf driver U7. The JVT
Interface J1(C14,A14) consists of a balanced RS-422 signal pair.
The unit receives its clock source from the JVT Clock through the input driver U9.
The JVT serial bus operates at 2.592 MHz.
The microprocessor provides the information to the PLGA, which conditions the
solid-state relay U11 across the bantam jack for bridging or splitting
configuration.
Receive Voice Path
The DS0 channel data is received by the input driver U8 from the JVT
J1(A16,C16) and after level conversion sent to U5(57).
U5 routes the signal through various gate arrays and modules internally and
outputs the signal on (44) to the COMBO amplifier U15(10). The signal is
latched each 125 µs in the time slot previously programmed. The COMBO
decoder performs D-A conversion and outputs the filtered analog VF signal to
SLIC U14(27).
The VF signal is fed into the Tip Feed Amplifier and Ring Feed Amplifier both
inside the SLIC, which together perform the 4W to 2W conversion.

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The output VF signal is sent to the Paddleboard via bantam jack J5 and back
connector J1(A4,A3) where it is terminated.
Transmit Signaling
The SLIC presents -4V at U14(39) and battery voltage -4V at U14(41).
Loop current is sensed at resistors R29 and R27 by SLIC Transversal Amplifier
and indicated at the output U14(11) that is connected to U5(81). The maximum
DC loop current is limited by resistors R31-R34 to 20, 30, 40, or 50 mA.
Ring ground is sensed by SLIC Longitudinal Amplifier and indicated at output
U14(12). A and B signaling bits are generated in the PLGA with bit position
defined by channel number.
The signaling data is "or-ed" with VF data and presented to the data output
U5(59). The signal is sent to the JVT shelf driver U7 and then out to the back
connector J1(A14,C14).
The Transmit Signaling condition can be read through a signaling monitor
window provided in the JCI software.
Receive Signaling
The PLGA Receive Signaling Module outputs the receive message on U5 (83,84)
to the SLIC U14(8,9). The Ring Relay Driver in the SLIC (36) controls closure of
the solid-state relay U12. Ring side (negative side) injected ringing method is
used so ringing voltage at Ring is superimposed on the negative battery voltage
and Tip is connected to battery ground.
The PLGA Receive Signaling Module also controls relays U13 and U16 through
U5(46,76). These relays are opened during ringing, which disconnects SLIC Tip
feed, and Ring feed. At the same time, U5(46) is controlling Q1, which connects
the ringing generator +5V supply only when ringing is requested.
The SLIC Ring Trip Detector senses the loop current at resistor R29 and
activates SHD U14(11), which is read by U5(81).
Solid-state relay U13 is open in the idle condition for FXS ground start signaling.
If the Tip-to-Ground message is received from the far end, U13 closes.

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Ringing Generator Sub-Assembly
The 86445-03 is equipped with a sub-assembly board, which provides a DC-to-
DC converter and square wave ringing generator.
The sub-assembly board is connected to the main assembly board via P3 and
J3.
The DC-to-DC converter U1 is a current mode switch operating in a buck-boost
configuration. The output voltage (-28V or -56V) is kept constant by controlling
the transfer of energy from the power source Vin(+5V) to the load.
When the switch is closed, current is drawn from the power source and stored
energy is kept in inductor L1. When the switch opens, energy is transferred from
the inductor to the output capacitor C7.
Duty cycle for the switch is controlled by the voltage divider reference of R5 and
R7 for -28V and R5 and R6//R7 for -56V. Q2 acts as a switch for selecting -28V
or -56V depending on the gate level controlled by the micro controller U1.
Microprocessor Operation
U1, 68HC11V1 micro-controller, is the CPU for the 86445-31 2W FXS unit and
operates in expanded mode. The CPU provides the following functions:
• Communication with the user through the Craft Interface port
• Controls the front panel LEDs and processes the activation of the ACK
push button switch
• Monitors the unit temperature sensor LM34(U9) and voltage converter
• Controls configuration of PLGA U5 including battery voltage control
depending on user's setting
• Communication of alarm Information to the JIF/JIF-Share unit for the
Network Management System
Crystal Y1 provides the 8.0 MHz clock to the microprocessor.