Case XLR 550 User manual

Revision 1.3a
XLR 550 Manual
22Mbps 2 Base-TL EFM Bridge
Version 1.3A

Revision 1.3a
Index
Contents
SECTION 1 XLR 550 OVERVIEW
1.1. XLR as a LAN Bridge ............................................................................................. 2
1.2. XLR 500 Used as part of an access system ............................................................ 2
1.3. Description of the XLR 500 .................................................................................... 2
2.0. Introduction.............................................................................................................. 3
2.1. Model Numbering Scheme...................................................................................... 3
2.2. XLR 500 Appearance .............................................................................................. 3
2.3. Front Panel Features ............................................................................................... 3
2.4. Power Connector, Power Status LED and Reset Button...................................... 4
2.4.1. Type of Power Supply ( XLR 5xxA, XLR 5xx ) .......................................................................4
2.4.2. Power Status LED......................................................................................................................4
2.4.3. Reset Button ...............................................................................................................................4
2.5. Console Part ............................................................................................................. 4
2.6. LAN Port Part (10/100BASE-T) ............................................................................ 5
2.7 BASE-TL PORT ...................................................................................................... 6
2.7.1 Connector Part ...........................................................................................................................6
2.7.3. 2BASE-TL PME Status LEDs ..................................................................................................7
2.8. Installing The XLR 500 ........................................................................................... 7
2.1. Checking the items shipped.......................................................................................................7
2.9. Connecting Power to XLR 500 ............................................................................... 8
2.9.1 Connecting 5V DC Power to the XLR 5xx...............................................................................8
2.9.2 Connecting +100 ~ +240V AC Power to the XLR 5xxA..........................................................8
2.9.3 Grounding XLR 5xx and XLR 5xxA........................................................................................9
2.10 Connecting the LAN Port to Other Network Devices .......................................... 9
2.11 Connecting 2BASE-TL PORT................................................................................ 9
2.11.1 Connecting 2BASE-TL Port....................................................................................................10
2.11.2 2BASE-TL Synchronisation ....................................................................................................10
2.12 Connecting the Console Port ................................................................................ 10
2.13 Verifying that XLR 500 is Operational.................................................................11
2.13.1 Checking the Status of Power Connection .............................................................................11
2.13.2 Checking the Status of LAN Port Connection.......................................................................11
2.13.3 Checking 2BASE-TL Connection ...........................................................................................11
2.14 Configuring XLR 500 through a Console Connection ........................................11
2.15 Troubleshooting The XLR 500. ............................................................................ 12
2.16 Specifications.......................................................................................................... 14
2.16.1 Mechanical & Power Requirement ........................................................................................14
2.16.2 Network Interface ....................................................................................................................14
2.16.3 LAN Protocols ..........................................................................................................................14
2.16.4 Management Interface.............................................................................................................14
2.16.5 VLAN Support .........................................................................................................................14
2.16.6 QoS Support .............................................................................................................................15
2.16.7 Production & Regulatory ........................................................................................................15
2.16.8 Environment.............................................................................................................................15
3.0. Before Starting ....................................................................................................... 16
3.1. XLR 550 Web Set Up............................................................................................. 17

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3.2. XLR 550 Statistics.................................................................................................. 18
3.3. GRAPHS................................................................................................................. 19
3.3.1. Daily Graph ..............................................................................................................................19
3.3.2. Weekly Graph ..........................................................................................................................19
3.3.3. PME Graph ..............................................................................................................................19
3.4. Log ................................................................................................................. 20
3.5. XLR 550 Web Set Up............................................................................................. 20
3.5.1. Set Up>System .........................................................................................................................21
3.5.2. Set Up>Interface ......................................................................................................................22
3.5.3. Set Up> Set DSL Line ..............................................................................................................23
3.5.4. Set Up>Set Port ........................................................................................................................24
3.5.5. Set Up>Set VLAN ....................................................................................................................24
3.5.6.6. Set Up> Set QOS.....................................................................................................................26
3.5.7. Set Up> Set MAC Filer............................................................................................................27
5.8. Set Up> Set Password ..............................................................................................................28
5.9. Set Up> Set Admin Password..................................................................................................28
5.10. Set Up>Set Date / Time...........................................................................................................28
5.11. Set Up > Set Log.......................................................................................................................29
5.12. Setting up SNMP......................................................................................................................30
5.13. Set Up> Set SNTP ....................................................................................................................31
5.14. Set up> Write Config ...............................................................................................................31
5.15. Set Up> Copy............................................................................................................................31
5.16. Set Up > Reboot.......................................................................................................................32
4.1. Conventions ................................................................................................................. 33
4.2.1. Accessing the CLI .................................................................................................. 34
4.2.1. Accessing the Privileged Mode ............................................................................. 34
4.2.2. Using Command-Line Processing ........................................................................ 35
4.2.3. Using History Substitution.................................................................................... 35
4.2.4. Using Command Completion Features................................................................ 36
4.2.5. Getting Command Help with Question Mark..................................................... 36
4.2.6. Abbreviating Commands ...................................................................................... 37
4.3 System Management..................................................................................................... 37
4.3.1 Set system ............................................................................................................... 37
4.3.2 show system ............................................................................................................ 39
4.3.3 restart system ......................................................................................................... 40
4.4 Interface Management ................................................................................................. 41
4.4.1 set interface............................................................................................................. 41
4.4.2 clear interface......................................................................................................... 41
4.4.3 show interface......................................................................................................... 42
4.5 Device Type Commands ............................................................................................... 43
4.5.1 set devicetype.......................................................................................................... 43
4.5.2 show devicetype...................................................................................................... 44
4.6 PME Management ........................................................................................................ 45
4.6.1 set pme ................................................................................................................. 45
4.6.2 show pme ................................................................................................................ 46
4.6.3 restart pme ............................................................................................................. 48
4.7 Double Tagging ID Commands.................................................................................... 49
4.7.1 set doubletag-id ...................................................................................................... 50
4.7.2 show doubletag-id .................................................................................................. 50
4.8 Port Management ......................................................................................................... 51

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4.8.1 set port ................................................................................................................. 51
4.8.2 show port ................................................................................................................ 52
4.8.3 set auto-ratecontrol................................................................................................ 54
4.8.4 show auto-ratecontrol............................................................................................ 55
4.9 Filter Commands .......................................................................................................... 55
4.9.1 set filter mac ........................................................................................................... 55
4.9.2 clear filter mac ....................................................................................................... 56
4.9.3 show filter mac ....................................................................................................... 56
4.10 EFM OAM Commands ................................................................................................ 57
4.10.1 set efmoam.............................................................................................................. 57
4.10.2 show efmoam.......................................................................................................... 58
4.11 Remote Device Management ....................................................................................... 59
4.11.1 cpe ................................................................................................................. 59
4.12 VLAN Management...................................................................................................... 60
4.12.1 set vlmode ............................................................................................................... 60
4.12.2 show vlmode ........................................................................................................... 60
4.12.3 set vlan ................................................................................................................. 61
4.12.4 clear vlan................................................................................................................. 61
4.12.5 show vlan ................................................................................................................ 62
4.12.6 set trunk ................................................................................................................. 63
4.12.7 clear trunk .............................................................................................................. 63
4.12.8 show trunk.............................................................................................................. 64
4.13 QoS Management.......................................................................................................... 65
4.13.1 set qos ................................................................................................................. 65
Usage .........................................................................................................................................................65
4.13.2 show qos ................................................................................................................. 66
4.14 Configuration Management......................................................................................... 67
4.14.1 show config ............................................................................................................. 67
4.14.2 copy commands for configuration........................................................................ 68
4.14.3 write command....................................................................................................... 70
4.14.4 clear config ............................................................................................................. 70
4.15 Software Image Management ...................................................................................... 71
4.15.1 show image ............................................................................................................. 71
4.15.2 copy commands for software image ..................................................................... 71
4.16 SNMP Commands......................................................................................................... 73
4.16.1 set snmp community .............................................................................................. 73
4.16.2 clear snmp community .......................................................................................... 74
4.16.3 set snmp trap .......................................................................................................... 74
4.16.4 clear snmp trap ...................................................................................................... 75
4.16.5 show snmp .............................................................................................................. 76
4.17 Log Commands ............................................................................................................. 77
4.17.1 show log ................................................................................................................. 77
4.17.2 show log dump ....................................................................................................... 77
4.17.3 clear log ................................................................................................................. 78
4.18 Statistics Commands .................................................................................................... 79
4.18.1 show statistics......................................................................................................... 79
4.18.2 clear statistics ......................................................................................................... 80

Revision 1.3a
4.19 Telnet Session Management ......................................................................................... 82
4.19.1 show users............................................................................................................... 82
4.19.2 disconnect ............................................................................................................... 82
5.1. XLR 550 VLANS ................................................................................................... 84
5.1.1. Simple LAN Extension ............................................................................................................84
Overview ...................................................................................................................................................84
Figure 5.1 Network Diagram..............................................................................................................84
5.1.2. Configuration for XLR 500 Series..........................................................................................84
5.1.3. Configuration for XLR 550 Series..........................................................................................84
5.1.4. VLAN Trunk ............................................................................................................................85
Figure 5.4 Network Diagram...................................................................................................................85
5.1.4.2. Configuration for XLR 500 Series ........................................................................................85
5.1.4.3. Configuration for XLR 550 Series ........................................................................................85
Device #1 Configuration Example Device #2 Configuration Example .......................................86
5.1.5. VLAN Stacking (Q-in-Q) ........................................................................................................86
Figure 5.5 Network Diagram..............................................................................................................86
5.2. Simple QoS Bridge (Fixed Priority)..................................................................... 87
5.2.1. Overview ...................................................................................................................................87
Figure 5.2 Network Diagram..............................................................................................................88
5.2.2. QoS Configuration for XLR 550 Series .................................................................................88
5.2.3. QoS Classifier...........................................................................................................................88
Figure 5.3 Network Diagram...................................................................................................................89
5.2.3.2. QoS Configuration for XLR 550 Series ................................................................................89
Device #1 Configuration Example ..........................................................................................................89
Device #2 Configuration Example ..........................................................................................................89

Revision 1.3a Page 1
XLR 550 Manual
Copyright
Copyright © 2007 Case Communications Ltd. All Rights Reserved.
This document contains information that is the property of Case Communications Ltd.
All or part of this document may not be copied, reproduced, reduced to any electronic medium
or machine readable form, or otherwise duplicated, and information herein may not be used,
disseminated or otherwise disclosed, except with the prior written consent of Case
Communications Ltd.
Version
Date
Effective H/W
Rev 1.2
Feb 28, 2007
add ”show users”,”disconnect”, ”set vlmode transparent”commands.
Rev 1.3
Nov 2007
H/W versions later than initial version
Case Communications
www.casecomms.com
0845 643 0800
International [phone]

Revision 1.3a Page 2
SECTION ONE XLR 500 OVERVIEW
1.1. XLR as a LAN Bridge
The XLR 550 enables LAN segments to simply connect to each other at Layer 2 over 2, 4 or 8 copper
wires, with data rates up to 5.7Mbps per pair. Thus, all kinds of protocols (TCP/IP, IPv6, IPX, NETBEUI
etc) which use Ethernet Frame can be passed over the link as well as passing various tagged VLAN
frames in each direction. The diagram below shows a simple example of the XLR being used to provide a
LAN extension
1.2. XLR 500 Used as part of an access system
The XLR 550 may also be used in conjunction with the Case XLR 5000 Cardframe, which can act as a
concentration point, providing 10/100/1000 Mbps back hauls to.
1.3. Description of the XLR 500
The XLR 500, 2BASE-TL EFM EDD (Ethernet Demarcation Device), extends the reach of
Ethernet services to sites with no access to fibre, using bonded copper pairs. Designed using
standards-based EFM technology (2BASE-TL), the XLR 500 series cost-effectively allows
service providers and enterprises to deliver Ethernet services with symmetrical bandwidth at
rates up to 22.8 Mbps.

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SECTION 2 XLR 550 HARDWARE MANUAL
2.0. Introduction
This document provides the procedures for installing the Case Communications’ XLR 500 series.
2.1. Model Numbering Scheme
The XLR can be supplied in multiple different models, 2 wire, 4 wire, 8 wires, with VLAN and QoS and
a version without QoS and VLAN and AC and DC powered. The most common selling model is the XLR
554 which is a 4 pair 22Mbps unit with Quality of Service and VLAN support. The 554 may also be
supplied with an internal power supply or an external 5 v dc power supply in line unit.
2.2. XLR 500 Appearance
Figure 1-1 below shows the two XLR models the XLR5xxA and XLR 5xx. Note that the XLR 5xx uses
an external PSU unit which provides 5 volts to the XLR 5xx, while the XLR 5xxA uses a direct feed of
230 vac.
2.3. Front Panel Features
Figure 2-1 shows the front panels of XLR5xxA and XLR5xx. In addition, it describes each of the
part’s, allowing the user to identify the component parts of the XLR 500.
Case Communications XLR 5xxA
Case Communications XLR 5xx
AC
Mains
Power
Input
Reset
Button
Power
Indicator
Config
Port
4 x
Ethernet Ports
DSL Line
Status
DSL Line
Cord

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2.4. Power Connector, Power Status LED and Reset Button
2.4.1. Type of Power Supply ( XLR 5xxA, XLR 5xx )
The XLR 5xxA uses AC power. Connect +100 ~ +240V AC to the connector of XLR 5xxA using a
power cord enables it power the unit on. The XLR 5xx uses a DC adapter which supplies 5V DC 3A. The
difference in power inputs makes the two products easily identifiable.
2.4.2. Power Status LED
This LED shows the status of power supply. Table 2-1 summarizes the indication of the LED.
Table 2-1
LED
Power Status
On
Normal
Off
Power not being connected or abnormal operation of power circuit
2.4.3. Reset Button
This is a button to reset the system. With a pointed tool, such as a ball-pen, users may reach
the button. The system may be reset, once the user clicks the button. Added to this, if user
keeps pressing the button until all the 2BASE-TL LEDs blink five times, the system restores to
the manufacturing configuration
Table 2-2
Operation on reset button
Result
Clicking
System reset
Pressing Until 2BASE-TL Blinks 5 Times
System reset as factory default
2.5. Console Part
For local management and configuration connect a maintenance terminal (for example, PC), to
the XLR 500. The Interface is an RS-232 interface provided via an RJ-45 female connector.
Figure 2-2 shows the pin assignments for the console port.

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2.6. LAN Port Part (10/100BASE-T)
The XLR 500 connects to a network device, such as an Ethernet switch, through their 10/100
Mbps Ethernet ports. The XLR 500 ports provide RJ-45 female connector’s so they can be
connected using a UTP cable with two RJ-45 jacks for the connection.
In addition, each Ethernet port has 2 LEDs so that user can be aware of the Ethernet ports
connectivity. One is for link status and RX status, the other for TX status.
Table 2-3 A below provides a summary of the ports LEDs and 2.3B of the pin outs.
The LAN port supports 10/100Mbps speed on the UTP cable at a distance of up to 100 meters
or less. Figure 2-3 lists the pin-outs for the LAN port connector (labeled "10/100BASE-T" ).

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2.7 BASE-TL PORT
2.7.1 Connector Part
The XLR 500 has 2BASE-TL interfaces provided via an RJ-45 connector. The XLR 5x4A / N5x4, has 4
pairs (8 wires) of lines which can be bonded to support up to 22.8Mbps.
The XLR 5x2A / XLR 5x2, can bond 2 pairs for 11Mbps, and the XLR 5x1A / XLR 5x1 supports 1pair
for 5.7Mbps. Table 2-4 below lists differences between model numbers
Table 2-4
Models
Available Telephone Line Pairs ( available PMEs )
XLR 5x4A / XLR 5x4
4 pairs ( p0, p1, p2, p3 )
XLR 5x2A / XLR 5x2
2 pairs ( p0, p1 )
XLR 5x1A / XLR 5x1
1 pair ( p0 )
< Table 2-4 > above Available Telephone Line Pairs for Each Model of XLR 500 series
Note that each PME uses different pins in the RJ-45 connector:
- p0 uses 4th and 5th pin of the RJ-45 connector
- p1 uses 1st and 2nd pin of the RJ-45 connector
- p2 uses 3rd and 6th pin of the RJ-45 connector
- p3 uses 7th and 8th pin of the RJ-45 connector
Figure 2-4 lists the pin-outs for the RJ-45 connector.
< Figure 2-4 > Pin Assignment for Each PMEs of 2BASE-TL Port

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2.7.3. 2BASE-TL PME Status LEDs
2.7.4. For each 2BASE-TL PME, the XLR 500 has LEDs showing the status as shown in figure 2-5.
2.7.5. The number attached nearby to the LED is the PME number.
Table 2-5 below describes the LED’s functions.
Table 2-5
LED State
Description
Off
Data Link Down or Hand Shaking
Slow Blinking
Training
Fast Blinking
Synchronizing
On
Data Link Up
2.8. Installing The XLR 500
This section described how to install the XLR 500. User may be aware of the safety information
in order to assure users’ safety and the XLR 500’ optimum performance. Where special
attention is required a safety symbol is shown.
2.1. Checking the items shipped
The following hardware items are needed, in addition to main device for installation.
For XLR 5xxA
- AC power cable
- UTP cable with RJ-45 for LAN connection
- UTP cable with RJ-45 connector for 2BASE-TL connection
- Console cable ( RJ-45 male to DB-9 female )
For XLR 5xx :
- DC adapter ( 5V DC 3A )
- UTP cable with RJ-45 for LAN connection
- UTP cable with RJ-45 connector for 2BASE-TL connection
- Console cable ( RJ-45 male to DB-9 female )
Above items are shown in figure 3-1.
< Figure 2-5 > LEDs for Each PME

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User should be cautious when connecting powers. AC power, which are plugged into the
system directly or into the DC adapter. The supplies must be within the appropriate range
(specified below). Plugs must not be handled with wet hands.
2.9. Connecting Power to XLR 500
2.9.1 Connecting 5V DC Power to the XLR 5xx
Connect one end of the power cable to the DC adapter.
Plug the other end of the power cable into the power terminal ( +100 ~ +240V AC ).
Plug the end of the AC/DC power adapter into the port named "5V DC 3A" on the front
panel of the XLR 5xx.
Power LED on the front panel may turn on if the power supply is normal.
2.9.2 Connecting +100 ~ +240V AC Power to the XLR 5xxA
< Figure 3-2 > XLR 5xxA’ s Power Connection

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Plug the end of the power cable into the power terminal ( +100 ~ +240V AC ).
Plug the other end of the power cable into the power connector on the front panel of the
XLR 5xxA.
Power LED on the front panel may turn on if the power supply is normal.
2.9.3 Grounding XLR 5xx and XLR 5xxA
Touching the ports on the front panel or connecting cables may induce static electricity. In the
extreme, this can damage the chipsets in the XLR 5xx’s system. To prevent this effectively,
user may wear a grounding wrist strap before installing or dealing with XLR 5xx.
In addition, grounding the system through the ground pin ensures a better electrical ground.
You may see the ground pin (left symbol) on the front panel (left most on XLR 5xxA’s and
rightmost on XLR 5xx’s panel). Wire this ground pin from the XLR to a suitable earth or
ground point.
2.10 Connecting the LAN Port to Other Network Devices
Confirm if the UTP cable connector is a RJ-45 jack.
Connect one end of the UTP cable to the network equipment such as a switch or hub.
Connect the other end of the UTP cable to one of the ports named "10/100BASE-T" on
the front panel of the XLR 5xx.
NOTE : The LAN port is auto-MDI/MDIX capable; you can use either straight-through or
Crossover cable to connect a network device (PC or Hub/Switch).
2.11 Connecting 2BASE-TL PORT
< Figure 3-4 > 2BASE-TL Port Connection

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2.11.1 Connecting 2BASE-TL Port
When attaching your line cord to the 2Base-TL connector on the XLR ensure
you identify the correct pairs within the cable. These can be seen in figure 2-4.
To connect your copper lines to the XLR 500 fit them into the RJ 45 port marked “2Base-TL”, using an
RJ 45 jack at the XLR end and an appropriate plug at the other end. In the UK this may be a British
Telecomm 631A plug.
Note that the RJ 45 supports up to 4 pairs, so to get the correct pair please refer to figure 2.4
2.11.2 2BASE-TL Synchronisation
The two XLRs at each end of the link must be configured differently, one as a CO and one as an
RT. This is configured using the local console port, please refer to section 5.
Once connected to the line the XLR’s will go through a period of time where they probe the line
and synchronise to each other. This usually takes from 30 seconds up to 2 minutes depending on the
quality of the circuit. This period of synchronization is referred to as ‘Training, and during
this period the LEDS (numbered 0 to 3) on the XLR may blink. Once the line has been successfully
trained these LEDS remain, in a constant ‘On’ state.
2.12 Connecting the Console Port
To configure the XLR 500, in the first instance use a console connection between the equipment
and PC. As described in section 2.2, the console cable has a DB-9 female connector, which will
be connected to the PC, and a RJ-45 male connector, which will be plugged into the XLR. This
section described how to physically connect the cable.
To log into the system, user may refer to the section Configuring XLR 500 through a Console Connection
Connect the RJ-45 jack of the console cable to the port named "CONSOLE" on the front panel
of the equipment. Connect the DB9 female, the other end of the console cable, to the COM port of the PC.
< Figure 3-5 > Console Cable Connected to XLR 5xxA

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2.13 Verifying that XLR 500 is Operational
This section helps the user to identify that the XLR 500 link is fully functional after installation. If
the device appears to be not working or to be malfunctioning, user should refer to the
troubleshoot section ( section 6 ).
2.13.1 Checking the Status of Power Connection
XLR 5xx, DC Powered
Verify that the device is connected to an operational AC to DC power adapter.
Check if the device is powered on: power LED may be ON constantly.
XLR 5xxA, AC Powered
Verify that the device is connected to an operational AC power cable.
Check if the device is powered on: power LED should be ON constantly.
2.13.2 Checking the Status of LAN Port Connection
Verify that a CAT-5 UTP cable is connected from one of the device’s 10/100 Mbps LAN ports to
an operational network device.
Verify that the LAN port LINK LED (left-sided LED on each port)s are ‘ON’, indicating that a
connection has been established between the equipment and the other network device.
Verify that the LAN port’s RX LED and TX LED are blinking when traffic is flowing into the port
(traffic being received) or out through the port (traffic being transmitted), respectively.
2.13.3 Checking 2BASE-TL Connection
Verify that telephone lines (copper-pair cable) are connected to a 2BASE-TL port.
Verify that two devices connected via their 2BASE-TL PMEs display ‘link up’.
1 If a device configured as CO and another configured as RT are connected by copper-pair e
through their 2BASE-TL ports they should “link up”. Each PME’s link-up state is indicated by its
LED being lit.
-2 If the LEDs don’t light up after an enough sync time, 2BASE-TL connection isn’t linked up.
2.14 Configuring XLR 500 through a Console Connection
As described in Connecting the Console Port user may plug the console cable the 9 way serial port on
their PC and the RJ socket on the XLR 500
Configure the communication settings of the PC’s terminal program, as below.
Console Port Terminal Settings
Baud rate: 38400 bps
Data bit: 8
Parity No parity
Stop bit 1 stop bit
Hardware flow control set to off

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On power up of the XLR, if the console is connected correctly and the unit is powering up
correctly the users should see the XLR going through the boot up process.
After the boot up process has completed the message , “Enter password” will appear. (If the
booting process of the equipment has completed before console connection, users may miss
the boot messages. In this case, simply input ENTER key into the terminal program and user
should be able to see a message saying “Enter password”)
Users should type the password to log into the system. (password is preliminarily set as
“password”; but users may change the password - refer to the CLI manual)
User may configure the system with the instruction set provided in the CLI manual.
NOTE: This H/W installation guide includes 2BASE-TL port connection and verifying its
function. Therefore, some basic 2BASE-TL port setting commands are provided here:
< Table 4-1 > Configuring Mode of 2BASE-TL Port
Operation on XLR 55x
Command input
Setting XLR 500 series as CO mode
set devicetype co
Setting XLR 500 series as RT mode
set devicetype rt
2.15 Troubleshooting the XLR 500.
This section covers troubleshooting on the XLR 500. If the problem is beyond the scope of this
document, you may request Technical Assistance from our technical support team. (see
Appendix B for Technical Assistance)
Table 5-1 below provides troubleshooting procedures, and figure 5-1 describes status LEDs.
< Figure 5-1 > Description of Status LEDs
Power
Status
Ethernet Port
Status
Data Rate
Full half Duplex
DSL Line Status
Handshaking
Sync
Reset
Button

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Table 5-1 troubleshooting procedures
Condition
Solution
Power LED off
XLR 5xx
-1 Verify that the DC adapter’s cable plug is connected
to an operational power source (+100 ~ +240V AC).
-2 Verify that that DC adapter is operational
XLR 5xxA
Verify that the AC power cable plug is connected to an
operational power source (+100 ~ +240V AC).
Console connection
disabled
Verify that the console cable’s DB-9 connector and RJ-45 jack is
plugged firmly. Verify that communication options are correctly set.
2BASE-TL Port’s LEDs
OFF with no blinking
In normal operation (a pair of devices, one set as CO, the other set asRT), 2BASE-TL
LED will be off if there is no copper pair connected to the port (or if a copper pair is
connected at the port but is notterminated at an operational remote device or if the
copper circuit isfaulty (i.e. excessive loss or open circuit))
1. Verify that the remote device is operational and the mode is set as
different mode from the device itself.
2. Verify that copper pairs are wired correctly in the copper pair. (refer
to figure 2-4 )
2BASE-TL Port’s LED
blinking but not
entering ON state
1. Verify that the line state is normal (state, such as distance). If the
distance of the line is too long to sync, it may fail to link up.
LINK / RX LED
In normal operation, the network LINK LED is on when a link is
detected between the N55x and a remote device.
1. Verify that the CAT5 cable is connected properly to a 10/100Mbps
port on an operational Ethernet device.
TX LED
In normal operation, the network RX LED, TX LED, or both blink when the device
detects traffic on the Ethernet port. If the these LED is off and the Network LINK LED
is on:
1. Verify that there is Ethernet traffic on the network connection.

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2.16 Specifications
2.16.1 Mechanical & Power Requirement
XLR 5xxA
Dimension(mm): 284(W) X 158(D) X 43(H).
Weight: 1.5 kg
Power: AC 85 ~ 264V, 45 ~ 65 Hz
XLR 5xx
Dimension(mm): 196(W) X 156(D) X 35(H)
Weight: 0.8 kg
DC 5V 3.0A
All front Access
19" Rack Mountable (Optional)

2.16.2 Network Interface
LAN
Four 10/100BASE-T Ports (RJ-45).
Auto MDI/MDIX
WAN
ITU-T G.991.2.(2004)
2BASE-TL, 64/65o encoding
EFM bonding (IEEE 802.3ah PAF)
RJ-45 Connector
Max 22.8Mbps ( 5.7Mbps / Port )
2.16.3 LAN Protocols
802.1d Transparent Bridging.
Up to 1K MAC Address ( N50xA / N50x )
Up to 8K MAC Address ( N55xA / N55x )
2.16.4 Management Interface
Console (RS-232, RJ-45)
Web Browser(HTTP), SNMP, Telnet
EFM (IEEE 802.3ah) OAM
RCMP (Remote Control & Management Protocol)
2.16.5 VLAN Support
Port-bases VLAN
Tag-based VLAN (802.1Q) ( N55xA / N55x only )
Up to 4096 VLANs ( N55xA / N55x only )
Double Tagging (Q-in-Q) ( N55xA / N55x only )
VLAN Trunk mode ( N55xA / N55x only )

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2.16.6 QoS Support
Ingress Rate control ( N55xA / N55x only )
Egress Traffic Shaping ( N55xA / N55x only )
Classification based on Port/802.1p/DSCP ( N55xA / N55x only )
4 Priority Queues ( N55xA / N55x only )
Strict Priority ( N55xA / N55x only )
Simple WFQ ( N55xA / N55x only )
2.16.7 Production & Regulatory
ISO 9001 Quality Management
ISO 14001 Environmental management
CE Approval
VCCI Approval
2.16.8 Environment
Operating Temperature: 0 ~ 50 degrees C
Extended Operating Temperature: -40 ~ 65 degrees C
Storage Temperature: -40 ~ 85 degrees C
Relative Humidity: 98%, non-condensing