ZyXEL Communications VLC1324G User Manual
VLC1324G
VDSL2 Line Card
User’s Guide
Version 3.95
4/2010
Edition 1
www.zyxel.com
About This User's Guide
About This User's Guide
Intended Audience
This manual is intended for users of the VLC1324G VDSL2 Line Card and the VSC1224-41
Splitter Card. It describes detailed information about the cards’ features and hardware.
Related Documentation
• IES-5000 and IES-6000 User’s Guides
Refer to the IES-5000 or the IES-6000 User’s Guide for directions on installation,
connections, maintenance, hardware trouble shooting and safety warnings.
• MSC1000G and MSC1024G Management Switch Card User’s Guides
These user’s guides cover the configuration of your IES-50 00 or IES-60 00. Refer to these
user’s guides for information on your VLC’s default settings.
• ZyXEL Web Site
Please refer to www.zyxel.com
certifications.
for additional support documentation and product
Documentation Feedback
Send your comments, questions or suggestions to: techwriters@zyxel.com.tw
Thank you!
The Technical Writing Team, ZyXEL Communications Corp.,
6 Innovation Road II, Science-Based Industrial Park, Hsinchu, 30099, Taiwan.
Need More Help?
More help is available at www.zyxel.com.
• Download Library
Search for the latest product updates and documentation from this link. Read the T ech Doc
Overview to find out how to efficiently use the documentation in order to better
understand how to use your product.
• Knowledge Base
VLC1324G User’s Guide
3
About This User's Guide
If you have a specific question about your product, the answer may be here. This is a
collection of answers to previously asked questions about ZyXEL products.
•Forum
This contains discussions on ZyXEL products. Learn from others who use ZyXEL
products and share your experiences as well.
Customer Support
Should problems arise that cannot be solved by the methods listed above, you should contact
your vendor. If you cannot contact your vendor, then con tact a ZyXEL o ffice for the region in
which you bought the device.
See http://www.zyxel.com/web/contact_us.php for contact information. Please have the
following information ready when you contact an office.
• Product model and serial number.
• Warranty Information.
• Date that you received your device.
• Brief description of the problem and the steps you took to solve it.
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VLC1324G User’s Guide
Document Conventions
Document Conventions
Warnings and Notes
These are how warnings and notes are shown in this User’s Guide.
1 Warnings tell you about things that could harm you or your device.
" Notes tell you other important information (for example, other things you may
need to configure or helpful tips) or recommendations.
Syntax Conventions
• The VLC1324G may be referred to as the “line card”, the “VLC”, the “device” or the
“system” in this User’s Guide.
• The “VLC1324G”, the “VLC”, the “device” and the “line card” refer to the VLC1324G51 for VDSL over POTS (Annex A). They also refer to the VLC1324G-53 for VDSL over
ISDN (Annex B). Differentiation is made where needed.
• “IES” refers to the IES-5000 or IES-6000 system, including the main chassis and all
associated cards.
• “MSC” refers to the MSC1000GA management switch card.
• Product labels, screen names, field labels and field choices are all in bold font.
• A key stroke is denoted by square brackets and uppercase text, for example, [ENTER]
means the “enter” or “return” key on your keyboard.
• “Enter” means for you to type one or more characters and then press the [ENTER] key.
“Select” or “choose” means for you to use one of the predefined choices.
• A right angle bracket ( > ) within a screen name denotes a mouse click. For example,
Maintenance > Log > Log Setting means you first click Maintenance in the navigation
panel, then the Log sub menu and finally the Log Setting tab to get to that screen.
• Units of measurement may denote the “metric” value or the “scientific” value. For
example, “k” for kilo may denote “1000” or “1024”, “M” for mega may denote “1000000”
or “1048576” and so on.
VLC1324G User’s Guide
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Safety Warnings
Safety Warnings
1 For your safety, be sure to read and follow all warning notices and instructions.
• Do NOT use this product near water, for example, in a wet basement or near a swimming
pool.
• Do NOT expose your device to dampness, dust or corrosive liquids.
• Do NOT store things on the device.
• Do NOT install, use, or service this device during a thunderstorm. There is a remote risk
of electric shock from lightning.
• Connect ONLY suitable accessories to the device.
• Do NOT open the device or unit. Opening or removing covers can expose you to
dangerous high voltage points or other risks. ONLY qualified service personnel should
service or disassemble this device. Please contact your vendor for further information.
• Make sure to connect the cables to the correct ports.
• Place connecting cables carefully so that no one will step on them or stumble over them.
• Always disconnect all cables from this device before servicing or disassembling.
• Do not use the device outside, and make sure all the connections are indoors. There is a
remote risk of electric shock from lightning.
• Do NOT obstruct the device ventilation slots, as insufficient airflow may harm your
device.
• Warning! To avoid risk of electric shock, remove only one card at a time and do not place
fingers or objects inside the chassis. Cover empty slots with slot covers.
6
This product is recyclable. Dispose of it properly.
VLC1324G User’s Guide
Table of Contents
Table of Contents
About This User's Guide..........................................................................................................3
Document Conventions............................................................................................................5
Safety Warnings ........................................................................................................................6
Table of Contents......................................................................................................................7
List of Figures...........................................................................................................................9
List of Tables...........................................................................................................................11
Chapter 1
VLC Overview..........................................................................................................................13
1.1 VLC Overview ........ ... .... ... ... ... .... ... .......................................................... ... ... .... ... ... .............13
1.2 VDSL2 Profiles Overview ................ ... ... .... ... ... ... .... ... ..........................................................13
1.3 Key Features ......................... .......................................................... .... ... ... ... .... ...................13
1.4 Front Panel of VLC ................... ... ... ... ... .... .......................................................... ... ... ... ....... 20
1.5 Ports and LEDs of VLC .......................................................................................................20
1.5.1 Ports ................................................. ... ... .......................................................... .......... 20
1.5.2 LEDs . .... ... ... ... .... .......................................................... ... ... ....................................... 20
1.6 VSC1224-41 POTS Splitter ....... ... ... ... ... .............................................................. ... ... ..........20
Chapter 2
VLC Specifications .................................................................................................................23
2.1 VLC Product Specifications .................................................................................................23
2.2 VLC Firmware Naming Conventions ...................................................................................25
2.3 Telco-50 Connector Pin Assignments ..................................... ... .......................................... 26
2.4 Wire Gauge Specifications ................. ... .... ... ... ... .......................................................... .... ...29
2.5 Console Cable Pin Assignments ......................................................................................... 29
2.6 VSC1224-41 .......... ... .... .......................................................... ... ... ... .... ... ............................. 30
2.7 VSC1224-43U ........................................... .......................................................... ... ... ... ....... 30
Chapter 3
VLC Troubleshooting..............................................................................................................31
3.1 The SYS or PWR LED Does Not Turn On ........................................................................... 31
3.2 The ALM LED Is On ............................................................................................................31
3.3 VDSL2 Data Transmission ........................... .......................................................................32
3.4 Local Server .............................................. ... ... ....................................................................32
3.5 Data Rate ........................................ ... ... .... .......................................................... ... .............32
VLC1324G User’s Guide
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Table of Contents
3.6 The Line Card is Not Manageable ....................................................................................... 33
3.6.1 Uploading the Default Configuration File via Boot Commands ........... ....................... 33
3.6.2 Uploading the Firmware via Boot Commands .................. ............. ............. ............. ... 34
Appendix A Legal Information ................................................................................................37
Index.........................................................................................................................................41
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VLC1324G User’s Guide
List of Figures
List of Figures
Figure 1 Front Panel ...............................................................................................................................20
Figure 2 Front Panel of VSC1224-41 .....................................................................................................20
Figure 3 VLC Ports 1-24 Telco-50 Connector Pin Assignments ...........................................................26
Figure 4 IES-5000/5005 Cable Telco-50 Pin Assignments (VLC End) ................................................... 27
Figure 5 IES-5000/5005 Cable Telco-50 Pin Assignments (Splitter Card End) ...................................... 27
Figure 6 IES-6000 Cable Telco-50 Pin Assignments (VLC End) ............................................................28
Figure 7 IES-6000 Cable Telco-50 Pin Assignments (Splitter End) ........................................................29
Figure 8 Console Cable Mini RJ-11 Male Connector ............................................................................. 30
Figure 9 Example Xmodem Upload ........................................................................................................ 33
Figure 10 Example Xmodem Upload ......................................................................................................35
VLC1324G User’s Guide
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List of Figures
10
VLC1324G User’s Guide
List of Tables
List of Tables
Table 1 VDSL2 Profile Maximum Transfer Rates ..................................................................................13
Table 2 Front Panel Ports ...................................................................................................................... 20
Table 3 LED Descriptions ...................................................................................................................... 20
Table 4 VLC Specifications .................................................................................................................... 23
Table 5 VLC Telco-50 Connector Pin Assignments ............................................................................... 26
Table 6 Wire Gauge Specifications ........................................................................................................ 29
Table 7 Console Cable Connector Pin Assignments ............................................................................. 30
Table 8 VSC1224-41 CO Impedance Splitter Card Specifications ........................................................ 30
Table 9 SYS LED Troubleshooting ........................................................................................................ 31
Table 10 ALM LED Troubleshooting ...................................................................................................... 31
Table 11 VDSL2 Data Transmission Troubleshooting .... ... ... .... ... .......................................................... 32
Table 12 Local Server Troubleshooting .................................................................................................32
Table 13 SYNC-rate Troubleshooting .................................................................................................... 32
VLC1324G User’s Guide
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List of Tables
12
VLC1324G User’s Guide
CHAPTER 1
VLC Overview
This chapter introduces the VDSL2 line card's general features, default settings and hardware.
1.1 VLC Overview
The VLC VDSL2 Line Card is perfect for ISPs or large building applications seeking to
provide high bandwidth broadband services to subscribers while minimizing costs. One VLC
provides VDSL2 service for 24 subscribers over existing telephone wiring, thus avoiding the
cost and hassle of installing new wiring.
The line from the user carries both the VDSL2 and the voice signals. For each line, the splitter
card separates the high frequency VDSL2 signal from the voice band signal and feeds the
VDSL2 signal to the line card, while the voice band signal is diverted to the central office
switch or PBX (Private Branch Exchange).
Use the Telco-50 connector pin assignments in Section 2.3 on page 26 along with the
directions and safety warnings in the IES User’s Guide to install the line card and make the
necessary connections.
1.2 VDSL2 Profiles Overview
Here are the VDSL2 maximum transmission rates that the VLC supports at the time of writing.
The actual transfer rates will vary depending on what the subscriber’s device supports, the line
conditions and the connection distance.
Table 1 VDSL2 Profile Maximum Transfer Rates
VDSL2 PROFILE MAXIMUM DOWNSTREAM MAXIMUM UPSTREAM
8a/b/c/d 85 Mbps 18 Mbps
12a/b 85 Mbps 50 Mbps
17a 100 Mbps 50 Mbps
1.3 Key Features
Here is a partial list of the VLC’s features.
1
1. These are the highest link rates attained in testing. Actual data transfer rates will vary. These rates are for a
single port. The ports cannot all simultaneously link up at these rates.
VLC1324G User’s Guide
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Chapter 1 VLC Overview
VDSL2 Compliance
•ITU-T
-G.993.2
-G.994.1
Discrete Multi-Tone (DMT) Modulation
The VLC is a DMT-based VDSL2 solution which dynamically adapts the bit transfer rate to
conditions on the local loop. This allows the line card to sustain high performance even over
noisy lines.
Transmit PSD Notches
The VLC supports the transmission of PSD (Power Spectral Density) notches at RFI (Radio
Frequency Interference) bands. This reduces the effects of strong radio sources nearby.
Upstream Power Backoff
Upstream Power Backoff (UPBO) methods can be applied to VDSL2 networks, in order to
solve FEXT (Far End Cross (X) Talk) noise effects in distributed environments.
Downstream Power Back-Off
The VLC1324G-51 supports the downstream power back-off (DPBO) in ITU-T G.997.1 to
reduce far-end crosstalk.
Band Plan Support
The VLC supports the band plans defined in ITU-T G.993.2.
Alarm Profiles
The system allows you to customize the priority levels of individual alarms and the alarm
severity threshold for recording alarms on an individual port(s). The VLC also includes a DSL
error (ES, SES, UAS) monitoring and alarm reporting mechanism.
VDSL2 Profiles
Profiles allow you to configure VDSL2 ports efficiently. You can configure all of the VDSL2
ports with the same profile, thus removing the need to configure the VDSL2 ports one-by-one.
You can also change an individual VDSL2 port by assigning it a different profile. The VLC
supports the following VDSL2 profiles:
•8a •8b
•8c •8d
• 12a • 12b
• 17a
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• The DS1 frequency band of the 17a profile starts at 138 kHz and the edge frequency of the
upper band of the 17a profile is 17.664 MHz.
• The VDSL2 profiles are programmable and automatically adapt according to the line
condition of each VDSL2 line.
VLC1324G User’s Guide
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