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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 25 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

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.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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VLC1324G User’s Guide