FEATURES•Low-cost, high-speed LAN and Internet connections for home or business.
•Operates over existing copper lines—no pricey T1 lines and no new installation expenses.
•Switch-selectable data rates for high- and low-bandwidth applications.
•Simple setup and little configuration means no substantial training or operating costs.
•1U rack height saves cabinet space.
OVERVIEW
Our SDSL and IDSL Network Extenders provide home users and businesses with dedicated digital Internet and LAN connections over copper pairs. They’re ideal for use in situations where the local network and the gateway to the ISP aren’t close enough to be directly attached to each other—places like campus-based businesses, multiple- unit apartment buildings, and urban areas.
They work over the existing copper cables already installed at your site. So you won’t be paying for new installations
or expensive T1 connections—and you don’t even have to subscribe to DSL service! Because installation is simple and the only thing you have to configure is the data rate, you won’t incur extra training costs.
All models do symmetrical data transfer, which makes them ideal for applications in which two network segments— two clinics at a hospital, for instance—need to be able to send and receive data at equally fast rates.
A broadcast-limiting feature ensures that broadcast traffic only consumes up to 20% of the total bandwidth. However, this only applies to pure broadcast traffic; unicast and multicast traffic are guaranteed at least 80% of the available bandwidth.
SDSL Network Extender 2000 and IDSL Network Extender Kits
These kits—and the Extender 2000 is one too, even if it’s not named that way—consist of a single-port provider unit and a single-port subscriber unit. They create a point-to-point digital link between two 10BASE-T Ethernet network segments.
Both the 10BASE-T network interface and the unit-to-unit DSL interface are carried on RJ-45 connectors.
IDSL Subscriber Unit
The LR0012A is a 1-port subscriber unit that connects to our discontinued 12-port provider units with AC (LR0011A-AC) or DC (LR0011A-DC) power.
The 12-to-1 configuration is intended for applications in which high-speed LAN and Internet access are essential for distributed local sites—an on-site office with various local clients, for instance.
Data Rates
The SDSL and IDSL Network Extender Kits don’t require software. In fact, they almost don’t require configuration or control at all. The one exception is the data rate at which they operate.
Each provider unit has one DIP switch that you can use to control this function. At installation time, you can try the highest available data rate, and if the provider and subscriber units fail to link at that rate, just step down to the next and try again. You can keep doing this until you reach a data rate at which the units can communicate successfully.
For point-to-point applications that need plenty of bandwidth, the SDSL Network Extender 2000 can transmit data at any of eight rates from 272 kbps to 2.32 Mbps. Even on 26 AWG cable, 2.32-Mbps data can be sent as far as 11,300 feet (3444.2 m), and slower data can be sent farther—up to 20,200 feet (6156.9 m) for 272 kbps.
The IDSL Network Extenders are designed for networks that will send only a low volume of data across the DSL link. You can set these extenders for either 128 or 144 kbps, which is double the top V.90 modem speed and the equal or better of ISDN. (Plus it’s all on your own equipment, so you don’t have to pay—or depend on—the telco.) The extenders can send and receive data at these rates across as much as 18,000 feet (5486.4 m) of cable, no matter what the cable’s wire gauge is.
For additional information, see the Data Rate and Distance (Maximum) specification on the next page.
