VERSATEK VX-MD4024 User manual

VX-MD4024
IP Digital Subscriber Line Access Multiplexer
HW Installation and User Guide
Part Number A0-31-0129-2.1
Issue 2.1 Draft, April 2010

Mandatory Regulations
I
Mandatory Regulations
The following sections describe the mandatory regulations that govern the installation and operation of the
VX-MD4024 .
List of Terms
Table 1 lists the terms used in this chapter.
Table 1 List of Terms
Term
Expansion
CE
Conformité Européenne
EEC
European Economic Community
EN
European Standards
FCC
Federal Communications Commission
IEC
International Electrotechnical Commission
General Requirements
The sections that follow outline the mandatory regulations that govern the installation and
operation of the VX-MD4024 . You must adhere to these instructions so that your system meets
regulatory requirements.
Prevention of Access
The VX-MD4024 must be accessible only to authorized personnel. Install this apparatus in a
restricted access location or similar environment to prevent unauthorized access.
Laser Interface
The VX-MD4024 uses Class I lasers as optical transmitter sources which are inherently safe
unless mishandled. The radiation from laser diodes is much more intense than other light sources
radiation. Only trained operating personnel thoroughly familiar with laser radiation hazards should
install or remove the fiber optic cables in this system.
EMC Compliance
EMC compliance may require the use of ferrites, shielded cables or other special accessories.
Where required, these special accessories must be installed as per the instructions.

Mandatory Regulations
II
Regulations compliance
Safety Approval
The system complies with the following safety norms:
–Product Safety Requirements identified in EN60950:2000
–Over Voltage Protection Requirements of ITU-T K.20
EMI/EMC
The system meets the requirements of Telecommunications Network Equipment: EN300-386.
Electromagnetic Compliance
The system complies with the standard FCC Part 15 Class A and EN55022.
RoHS
The system complies with the RoHS.
CE
The system conforms to the CE requirements.

Contents
III
Contents
Mandatory Regulations
List of Figures....................................................................................................................V
List of Tables.....................................................................................................................VI
Preface................................................................................................................................ 1
Scope 1
Audience ........................................................................................................................................1
Related Documentation..................................................................................................................1
Documentation Conventions..........................................................................................................1
1—Installation of the VX-MD4024 ........................................................................... 2
1.1 Pre-Installation ............................................................................................................3
1.1.1 Tools and Test Equipment Requirements .......................................................................3
1.1.2 Safety Requirement.........................................................................................................3
1.1.3 Electrostatic Discharge Protection...................................................................................3
1.2 Hardware Installation ..................................................................................................4
1.2.1 Hardware Type.................................................................................................................4
1.2.2 Factory Default Management IP Addresses....................................................................5
1.2.3 Installation Overview........................................................................................................5
1.2.4 Mounting the VX-MD4024 ...............................................................................................6
1.2.5 Power and Ground Connections......................................................................................8
1.2.6 Connecting the VDSL/ADSLx and POTS interfaces .....................................................10
1.2.7 Connecting the GBE1/GBE2 trunk interface .................................................................12
1.2.8 Ethernet Port (MGMT) ...................................................................................................13
1.2.9 Console Port (CID).........................................................................................................14
1.2.10 Housekeeping and Alarm Contact Output Interface......................................................15
1.3 Provisioning a Management IP port..........................................................................17
1.4 Configuration Import/Export......................................................................................21
1.5 Firmware Update.......................................................................................................23
2—Operating and Maintaining the VX-MD4024 ................................................... 25
2.1 Maintenance requirement.........................................................................................26
2.1.1 Tools and Equipment Requirements .............................................................................26
2.1.2 System Spares...............................................................................................................26

Contents
IV
2.1.3 Dispatching Maintenance Personnel.............................................................................26
2.1.4 Electrostatic Discharge Protection.................................................................................27
2.1.5 Routine Maintenance.....................................................................................................27
2.2 Powering the VX-MD4024 ........................................................................................28
2.3 Controls and LED Indication.....................................................................................29
2.4 Replacing Units.........................................................................................................31
3—Troubleshooting the VX-MD4024 .................................................................... 32
3.1 Introduction to Troubleshooting................................................................................33
3.2 Resolving Problems Indicated Through LEDs..........................................................33
3.3 Resolving Problems Indicated Through Alarms.......................................................34
3.4 Procedures for Troubleshooting the VX-MD4024 ...................................................34
Abbreviations................................................................................................................... 38
Abbreviations

List of Figures
V
List of Figures
Figure 1-1 Console Setting...........................................................................................................................5
Figure 1-2 Mounting Bracket Orientation (Top View)...................................................................................6
Figure 1-3 Mounting Bracket Position for Standard Mount (VX-MD4024 -DC shown)................................7
Figure 1-4 Power connection and power switch of VX-MD4024 ................................................................8
Figure 1-5 VX-MD4024 grounding screw on the front panel.......................................................................9
Figure 1-6 Pin Assignment of LINE Interface (VDSL2 30a, Horizontal Tip/Ring model)...........................10
Figure 1-7 Pin Assignment of LINE Interface (VDSL2 17a, Vertical Tip/Ring model)...............................10
Figure 1-8 Pin Assignment of POTS Interface...........................................................................................11
Figure 1-9 Connecting optical fiber to the trunk port..................................................................................12
Figure 1-10 Ethernet Port RJ-45 pin assignment.......................................................................................13
Figure 1-11 Console Port RJ-45 pin assignment.......................................................................................14
Figure 1-12 Pin Assignment of Console Cable..........................................................................................14
Figure 1-13 Pin assignment of Housekeeping Inputs and Alarm Contact Output.....................................15
Figure 1-14 Operation diagram of Housekeeping Inputs and Alarm Contact Output................................16

List of Tables
VI
List of Tables
Table 1-1 Required Installation Tools and Materials....................................................................................3
Table 2-1 Required Installation Tools and Materials..................................................................................26
Table 2-2 Procedures of Powering Up the DSLAM ..................................................................................28
Table 2-3 Procedures of Powering Down the DSLAM..............................................................................28
Table 2-4 VX-MD4024 Controls and LED Indication ................................................................................29
Table 3-1 Problems Indicated by LEDs......................................................................................................33
Table 3-2 List of Troubleshooting Procedures...........................................................................................34

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Preface
Scope
This document describes the VX-MD4024 . It contains:
Procedures for installing the DSLAM (chapter 1)
Procedures for operating and maintaining the DSLAM (chapter 2)
Procedures for troubleshooting the DSLAM (chapter 3)
Expansions of abbreviations used in the manual (Abbreviations)
Audience
This document is intended for system engineers or operating personnel.
Related Documentation
For information about how to manage the DSLAM through Command Line Interface (CLI) commands,
refer to the VX-MD4024 CLI Command Reference.
For information about how to manage the DSLAM through Web GUI, refer to the VX-MD4024 Web
Configuration Tool Guide.
Documentation Conventions
The following conventions are used in this manual to emphasize information that will be of interest to the
reader.
Danger —The described activity or situation might or will cause personal injury.
Warning —The described activity or situation might or will cause equipment damage.
Caution —The described activity or situation might or will cause service interruption.
Note —The information supplements the text or highlights important points.

3 Installation of the VX-MD4024
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1 — Installation of the VX-MD4024
1.1 Pre-Installation
1.2 Hardware Installation
1.3 Provisioning a Management IP Port
1.4 Configuration Import/Export
1.5 Firmware Update

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1.1 Pre-Installation
This section provides the information users have to beware of before installing the VX-MD4024 .
The information includes required installation tools, safety requirements, and electrostatic
discharge protection.
1.1.1 Tools and Test Equipment Requirements
To install and maintain the VX-MD4024, you should have the tools and test equipment listed in
the Table 1-1.
Table 1-1 Required Installation Tools and Materials
Item Required
Purpose
Anti-static wrist strap
Protect the VX-MD4024 system from electrostatic
discharge damage.
Hand tools
Screw drivers for equipment removal and replacement.
Wire cutter/stripper
Prepare wires for electrical connections.
Accessories and hardware kit
Screws, bolts, etc., for securing the equipment on the
desired location.
1.1.2 Safety Requirement
To prevent possible serious injury, do not apply power to the VX-MD4024 system at the central
office or any remote site until you’ve completed all of the installation procedures and connected it
to the external facilities. Be cautious, when turning on/off the VX-MD4024 system power.
1.1.3 Electrostatic Discharge Protection
The terminal cards contain static-sensitive components. When handling them, be sure to wear a
properly grounded anti-static wrist strap to prevent the damage from electrostatic discharge. If a
wrist strap is not available, hold all cards only by their edges or extractor handles. Do not touch
any component or traces on the cards. For future use, store cards in original shipped antistatic
bags, or in an approved static-protected bag or container.
To minimize the possible damage from electrostatic discharge, do not install the VX-MD4024 in
cold, dry places where static electricity can build up. Also, when handling cards, do not touch
their rear-edge connector traces. These electrical contact points should be kept free of body oils
and other contaminants.

1 — Installation of the VX-MD4024
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1.2 Hardware Installation
The hardware installation for the VX-MD4024 is simple and without complex hardware setting.
However, it should be installed following out the standard installation procedures. During
installation, basic safety precaution should always be taken, especially, be sure to wear an
antistatic wrist strap to prevent static electricity from damaging the system and injury to the
operator. Handle electronic components as little as possible.
This chapter provides the VX-MD4024 system hardware installation procedures and install
samples for reference. Please perform the procedures in the suggested order.
1.2.1 Hardware Type
There are a total of 4 different types of VX-MD4024 hardware with the front panel view.
Figure 1-1 VX-MD4024 with DC power and no splitter
Figure 1-2 VX-MD4024 with DC power and splitter
Figure 1-3 VX-MD4024 with AC power and no splitter
Figure 1-4 UAMP 2200 with AC power and splitter

1 — Installation of the VX-MD4024
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1.2.2 Factory Default Management IP Addresses
⚫Management Out-of-band IP-Address, Subnet Mask
192.168.1.1, 255.255.255.0
⚫Management Out-of-band Default Gateway
192.168.1.254
⚫Management In-band IP-Address, Subnet Mask
192.168.5.3, 255.255.255.0
1.2.3 Installation Overview
The installation consists of the following procedures. Each procedure will be explained in detail in
the following sections:
Step 1:
Mount the system into the desired location of a rack.
Step 2:
Wire electrical ground for the system and connect the cables between system
and MDF.
Step 3:
Please check the cable connection robustness and correctness.
Step 4:
Check the voltage of the DC power supply, and then connect the system DC
inputs to the power source outputs.
Step 5:
Connect Console cable to COM port of a computer. Then run the terminal
program with the setting shown below:
Figure 1-5 Console Setting
Users can also access the DSLAM via Ethernet. Refer to section 1.2.2 for the
factory default IP settings of the DSLAM. Users can modify the IP address
by using the CLI commands or Web Configuration Tool (refer to section 1.3).
It’s possible to access the DSLAM with telnet on port 23.

1 — Installation of the VX-MD4024
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1.2.4 Mounting the VX-MD4024
The position and orientation of the brackets depends on the rack used for mounting. The DSLAM
can be front-mounted in a standard channel rack (5-inch projection); and it can be shipped with
the mounting brackets installed in one of three mounting positions or shipped loose (see Figure
1-6).
The mounting brackets can be rotated for use in wall mounting. Optional adhesive feet may be
attached to the bottom of the chassis so that it can be placed on a desk or other smooth surface.
STANDARD
FRONT MOUNT
FRONT
MOUNTING
BRACKET MOUNTING
BRACKET
Figure 1-6 Mounting Bracket Orientation (Top View)
After the site requirements have been verified, the chassis may be installed at the specified
location. When mounting the chassis, practice good safety habits. Use two or more people to
secure the chassis. Relay rack mounting normally requires at least two people.
Step
Action
1
Locate the chassis and obtain the appropriate chassis mounting hardware.
2
Determine and obtain the tools required for the chassis mounting hardware.
3
From the front of the relay rack, position the chassis in its relay rack mounting
location.
4
Using the appropriate rack mounting hardware, secure the chassis in its relay location
on both left and right side of mounting bracket (see Figure 1-7).
Note —The chassis should be empty during the chassis mounting procedures. Remove any unit
in the chassis, and store them according to static-sensitive device storage procedures.
Warning —Hazardous voltages may exist on the chassis. Always practice good safety habits
when wiring a live circuit or performing maintenance.

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For 23’’ Rack
For 19’’ Rack
Figure 1-7 Mounting Bracket Position for Standard Mount (VX-MD4024 -DC shown)

1 — Installation of the VX-MD4024
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1.2.5 Power and Ground Connections
Figure 1-8 Power connection and power switch of VX-MD4024
AC Power Connection
If your VX-MD4024 uses AC power, connect the AC power cord to the AC supply socket on the
front panel of the DSLAM (refer to Figure 1-8), and plug the cord into the external power source.
The voltage must be 100 to 240 V (±10% tolerance).
DC Power Connection
The DC power interface is a 5-pin terminal block with polarity signs on the front panel of the
DSLAM.
The VX-MD4024 can be powered from two –48V DC power supply. The DC power connector is
a 5P terminal block; 2P is for accommodating one DC power input and other 2P is for
accommodating another DC power input. The center pin of the terminal block is FGND. The DC
power should be connected to a well-fused power supply.
After completing chassis installation, please apply power to the fused power distribution panel
feeding the chassis. When using a DC voltmeter, please check for proper voltage: -60V ~ -36V
DC, and make sure that the polarity is correct.

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Warning —Ensure that all power sources to the chassis (power distribution panel) are turned off
during the connection.
Note —It is recommended that the -48VDC power be supplied directly and independently by a
power feeding system and also avoid having a parallel or mutual connection with other
-48VDC power supplier of telecom equipment. This is to guarantee our products against
interferences by other equipment while they are working.
Ground Connections
This section provides the grounding rule for the VX-MD4024 . All remote system sites must be
properly grounded for optimum system performance.
In Central Office:
There should be a CO GND that is adequately grounded. If the measured resistance from the
grounding screw (on the front panel of the DSLAM, refer to Figure 1-9) to CO GND is less than 5
Ohm, then it can be assumed that the system is well grounded. If the measured resistance is larger
than 5 Ohm, it is recommended to connect the grounding screw to CO GND using #14 or #12 AWG
wire gauge conductor.
In Remote Cabinet:
The VX-MD4024 should be grounded by connecting a #14 or #12 AWG conductor between the
grounding screw (on the front panel of the DSLAM, refer to Figure 1-9) and the earth ground or
main grounding bar. The resistance between the chassis and the grounding bar should be less than
25 Ohm.
Figure 1-9 VX-MD4024 grounding screw on the front panel

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1.2.6 Connecting the VDSL/ADSLx and POTS interfaces
The VX-MD4024 supports 24 ports VDSL2/ADSLx subscribers per box. Depending on your box,
there maybe two RJ21 50-pin female connectors on the front panel of the system. One for
VDSL/ADSLx line and the other for POTS interface.
To connect the subscriber lines, use cables with the RJ21 50-pin male connectors. When
installing, just plug the end of a cable with connector into the POTS or LINE interface female
connector on the front panel. The other end of the cable is generally tied to the MDF.
The following figure shows the Line/POTS port position of the system:
POTS port 24 1 LINE port 24 1
The pin assignment of Line/POTS interface is illustrated below (the numbers in the connector
figures below represent PIN numbers). Please be aware of the different style pin-assignment.
Line port 1~24:
125
2650
Pin No.
25
24
23
22
21
20
19
18
~
8
7
6
5
4
3
2
1
Port No.
X
Ring
23
Tip
23
Ring
21
Tip
21
Ring
19
Tip
19
Ring
18
~
~
Ring
7
Tip
7
Ring
5
Tip
5
Ring
3
Tip
3
Ring
1
Tip
1
Pin No.
50
49
48
47
46
45
44
43
~
33
32
31
30
29
28
27
26
Port No.
Ring
24
Tip
24
Ring
22
Tip
22
Ring
20
Tip
20
Ring
18
Tip
18
~
Tip
8
Ring
6
Tip
6
Ring
4
Tip
4
Ring
2
Tip
2
X
Figure 1-10 Pin Assignment of LINE Interface (VDSL2 30a, Horizontal Tip/Ring model)
Pin No.
25
24
23
22
21
20
19
18
~
8
7
6
5
4
3
2
1
Port No.
X
Tip
25
Tip
24
Tip
23
Tip
22
Tip
21
Tip
20
Tip
19
~
~
Tip
8
Tip
7
Tip
6
Tip
5
Tip
4
Tip
3
Tip
2
Tip
1
Pin No.
50
49
48
47
46
45
44
43
~
33
32
31
30
29
28
27
26
Port No.
X
Ring
25
Ring
24
Ring
23
Ring
22
Ring
21
Ring
20
Ring
19
~
Ring
8
Ring
7
Ring
6
Ring
5
Ring
4
Ring
3
Ring
2
Ring
1
Figure 1-11 Pin Assignment of LINE Interface (VDSL2 17a, Vertical Tip/Ring model)

1 — Installation of the VX-MD4024
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POTS port 1~24:
125
2650
Pin No.
25
24
23
22
21
20
19
18
~
8
7
6
5
4
3
2
1
Port No.
X
Tip
25
Tip
24
Tip
23
Tip
22
Tip
21
Tip
20
Tip
19
~
~
Tip
8
Tip
7
Tip
6
Tip
5
Tip
4
Tip
3
Tip
2
Tip
1
Pin No.
50
49
48
47
46
45
44
43
~
33
32
31
30
29
28
27
26
Port No.
X
Ring
25
Ring
24
Ring
23
Ring
22
Ring
21
Ring
20
Ring
19
~
Ring
8
Ring
7
Ring
6
Ring
5
Ring
4
Ring
3
Ring
2
Ring
1
Figure 1-12 Pin Assignment of POTS Interface

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1.2.7 Connecting the GBE1/GBE2 trunk interface
The system provides two types of trunk interfaces (two ports for each type): electrical (RJ-45) and
optical (mini-GBIC) interfaces. When both electrical and optical ports are connected, system will
automatically select the interface according to the priority setting (Fiber first or Copper first).
RJ-45 Electrical Trunk Interface
The pin assignment of RJ-45 connector on the trunk port is shown in the following figure and
table.
1,2
T/Rx+,T/Rx-
3,6
T/Rx+,T/Rx-
4,5
T/Rx+,T/Rx-
7,8
T/Rx+,T/Rx-
Mini-GBIC (SFP) Trunk Interface
Prepare a proper SFP module and install it into the optical trunk port. Then you can connect fiber
optics cabling that uses LC connectors or SC connectors (with the use of an optional SC-to-LC
adapter) to the fiber optics connector on the trunk port.
Fiber optics cable with LC duplex connector
Connect the optical fiber to the SFP socket
Figure 1-13 Connecting optical fiber to the trunk port
Note —Please observe the proper connecting terminals for transmitting cable to TX LC-type
receptacle, and receiving cable to RX LC-type receptacle on the front panel.
Warning —Never look directly at the transmitting ports of optical interface that might
be emitting laser, in order to prevent damage to the eye from the laser radiation.