ZyXEL VLC1324G User Manual download pdf (Page 13)

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.

1.3 Key Features

Here is a partial list of the VLC’s features.

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. 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.

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ZyXEL VLC1324G User Manual Page 13