User's Manual

ADSL MODEM USER MANUAL

- 4 -

1. OVERVIEW

1.1 ABOUT ADSL AND ADSL 2+

ADSL MODEM is a broadband Internet access device，which utilizes the high frequency segment of the

phone line to transmit high-speed data without interfering with the voice transmission. The frequency of ADSL

signal is higher than that of voice, so voice and ADSL signal can coexist in one line by using a splitter to

insulate each from the other. ADSL data transfer on the asymmetry way. The upload speed is up to 1Mbps and

download speed is up to 8Mbps. It is an ideal device for broadband access.

Transmission performance of ADSL2 is improved comparing with the first generation of ADSL. These

improvements are mainly concerned with long distance, anti-line-loss, anti-noise, etc. By doubling the

transmission bandwidth, ADSL2+ has implemented a downlink rate as high as 24 Mbps. Therefore, Internet

applications such as synchronous transmission of multi video stream, online games and huge capacity of

downloading files are made possible.

1.2 DEVICE INTRODUCTION

Figure 1.1

OVERVIEW