YoungWoo YC-201 User manual

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YC-201 User’s Manual
(VDSL Modem)
]
YoungWoo Telecom Co.,LTD

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Thank you for buying our YC-201 VDSL Modem.
Before using it, please read carefully this user’s manual to use superhighway Internet service effectively.
CLASS B
This equipment, as EMI compatible equipment for home use, can be utilized at all areas including residential
areas.
Before You Begin
This manual is intended for general users of YC-201 VDSL Modem.
This manual describes the introduction and installation of YC-201 VDSL Modem, network connection,
Internet access over IP, and troubleshooting).
Not only the first users of VDSL modem such as YC-201 VDSL Modem but also those that much handled
products similar to it must carefully read the contents of this manual before installing and using YC-201
VDSL Modem.
If there occurs any problem in the course of using YC-201 VDSL Modem including product damage, please
report the fact to VDSL service provider.
Organization
Each chapter of YC-201 VDSL Modem User’s Manual describes:
AChapter 1 ‘Introduction’introduces the main function of YC-201 VDSL Modem and the method of
using it and describes hardware configuration and specifications.
BChapter 2 ‘Before You Begin’describes matters that users should be well aware of before installing
YC-201 VDSL Modem.
CChapter 3 ‘Installing YC-201 VDSL Modem’introduces environment where YC-201 VDSL Modem
can be installed, and describes the method of actually installing products and connecting it to network.
DChapter 4 ‘Accessing the Internet via YC-201 VDSL Modem’describes the method of installing and
deleting emulator and accessing and disconnecting network at each PC that uses Windows 95, 98,
2000, NT as operating system.
EAppendix A ‘Troubleshooting’presents problems that could occur upon use of YC-201 VDSL Modem
and the troubleshooting.
FAppendix B ‘Windows 95/98 Telephone Access Networking error Code’describes the code of errors
that could occur in attempting telephone access networking in Windows 95 and 98, their meaning, and
solutions of them.
GAppendix D ‘Terminology’describes useful terms in using YC-201 VDSL Modem.

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CAUTION Appendix A is used when installation personnel or maintenance personnel of Korea Telecom, a VDSL
service provider, install the products and maintain them. Therefore, general users should not refer to
these contents to perform jobs, preventing problems from occurring in the products.
NOTE : FCC
This equipment has been tested and found to comply with the limits for a Class B digital device, Pursuant to Part 15 of the FCC
rules.
These limits are designed to provide reasonable protection against harmful interface in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning
the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following
Measures:
--Reorient or relocate the receiving antenna.
--Increase the separation between the equipment and receiver.
--Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
--Consult the dealer or an experienced radio/TV technician for help.
CAUTION: Changes or modifications not expressly approved by the manufacturer responsible for compliance could
void the user’sauthority to operate the equipment

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Table of Contents
chapter 1 Introduction................................................................................................................................................................5
1Introduction of YC-201 VDSL modem......................................................................................................................7
2 Name and function of YC-201 VDSL........................................................................................................................8
3 YC-201 VDSL Modem Specifications.......................................................................................................................9
Chapter 2 Before Installation...................................................................................................................................................11
1 Safety checkup........................................................................................................................................................12
2 Before installation...................................................................................................................................................12
3 Cable Preparation....................................................................................................................................................13
Chapter 3 Installing YC-201 VDSL Modem ............................................................................................................................14
1 Installation environment..........................................................................................................................................15
2Unpacking and checking the contents ......................................................................................................................15
3Modem Installation .................................................................................................................................................16
Chapter 4 Internet Access via YC-201 VDSL Modem..............................................................................................................22
1Checkup before YC-201 VDSL Modem installation.................................................................................................23
2About YC-201 VDSL Modem.................................................................................................................................28
3System Specifications for YC-201 VDSL Modem Installation..................................................................................28
4Viewing Network Information.................................................................................................................................29
5Internet Access........................................................................................................................................................30
6Internet Disconnection.............................................................................................................................................31
7Troubleshooting ......................................................................................................................................................32
Appendix A Troubleshooting...................................................................................................................................................33
Appendix B Windows 95/98 Phone Access Networking Error Code.........................................................................................35
Appendix C Terminology ........................................................................................................................................................49

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Chapter 1 Introduction
VDSL : Very High-bit rate Digital Subscriber Line
Through this technology, an operator offers multi-megabyte service to subscribers by existing copper-fiber
infrastructure, and current VDSL modem provides the following according to the length of lines and modem
configuration.
Symmetric Asymmetric
Upload 10~13Mbps 13Mbps
Speed Download 10~13Mbps 52Mbps
Transmission Distance 0~1.5Km 0~4.5Km
<Table 1> YC-201 VDSL Modem Speed and Transmission Distance
Further, it is so designed as to enable optimum service within transmission distance of 1.2Km via telephone
line, and VDSL was configured in hybrid. It uses fiber from central office (switch) to street curb or
ONU(Optical Network Unit) of apartment and building, and utilizes existing telephone line to the extent of
indoor subscriber device.
<Figure 1> VDSL Service Network Configuration Diagram

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This chapter introduces the main function of YC-201 VDSL modem and the method of using it, and
describes HW configuration and specifications. The organization of this chapter is as follows:
1. Introduction of YC-201 VDSL modem
2. Name and function of each part
3. YC-201 VDSL modem specifications

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1Introduction of YC-201 VDSL modem
<Figure 2 > YC-201 VDSL Modem
With YC-201 VDSL modem, you can connect PC to the Internet or other multimedia service network by
using existing PSTN.
YC-201 VDSL modem provides superhighway access and enables use of telephone during its use unlike
existing dial-up modem.
YC-201 VDSL modem provides the following functions:
AVarious Applications
ŸYC-201 VDSL modem provides various VDSL applications such as Internet access, interactive
communication, e-mail, file transfer, data download and upload, etc.
BPowerful network management function
ŸYC-201 VDSL modem is a terminal and interworks with the host of the district central office.

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Therefore, the central office can offer subscriber network management service.
CEasy installation
ŸYC-201 VDSL modem is easy to install and general users can easily access ISP and get Internet
service.
DManagement function of web environment
ŸYC-201 VDSL Modem enables direct Internet connection, monitors the operation of the modem
via serial port and telnet and can change setup.
2 Name and function of YC-201 VDSL
<Figure 3> Front View of YC-201 VDSL Modem
Location
Label Color Function
¨çPOWER Green On while AC power is normally input.
¨èVDSL Green On while VDSL host of central office is connected.
¨éDATA Green Blink while sending and receiving data with VDSL host of central office.
<Table 1> Function of each LED of YC-201 VDSL modem
¨çPOWER LED
¨èVDSL LED
¨é DATA LED

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<Figure 4> Rear View of YC-201 VDSL Modem
Location Label Port Function
Left LAN LAN port This port uses UTP Category-3, 4, 5 Straight-through cable to
connect to LAN card of PC. It supports a speed of 10/100Mbps.
Center DC 5V Power input port
Connects power (AC 110V/220V, DC5V Adaptor) to VDSL
modem.
Right LINE VDSL line port
From phone socket installed on the wall, RJ-11 phone cable is
connected, and VDSL data are input or output.
Right PHONE Phone port Connects to phones.
<Table 2> Function of YC-201 VDSL Modem Port
3 YC-201 VDSL Modem Specifications
Item Specifications
Product spec. Size: 108.00(width) * 140.00(length) * 32.35(height) mm
Weight: 1.2Kg(modem, power supply device, and cable included)
Operating
temperature 0~50 °C
Power Input voltage: AC 110/220V, DC 5V
Frequency: 50 ~ 60 Hz
Power consumption:Max. 1A
Applied standards ANSI T1E1.4, VDSL Coalition, FSAN
Frequency band used
0.9 ~ 3.5Mhz(Down), 4.0 ~ 7.9Mhz(Up)
Modulation method QAM (Quadrature Amplitude Modulation) conversion :
QAM4 ~ QAM256
LAN PORT
DC 5V PORT
LINE, PHONE PORT

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Transmission rate Symmetrical data rate : 0.5Mbps ~ 13Mbps.
Asymmetrical data rate : 0.5 ~ 52Mbps.
Transmission distance
Symmetrical : 0~1.5Km.
Asymmetrical : 0~4.5Km
Error detection Reed-Solomon Forward Error Correction(FEC).
Multiplexing FDD Duplex
Transmission Power 11.5dbm
PC interface 10/100 Base-T LAN
<Table 3> YC-201 VDSL Modem Specifications