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Introduction 36
Model 3086FR ATM IAD User Guide 4 • Connecting the DSL and data ports
Introduction
The model 3086FR comes with a DSL port, 2 data ports: serial (V.35, X.21, or T1/E1), and a 10/100Base-T
Ethernet port. Frame Relay data from the serial port is passed to the FR to ATM converter engine and is prepared
for transmission over the DSL link – data from or to the serial port does not enter the router core of the 3086FR.
Data from the Ethernet port is processed by the router or bridge core before entering the ATM encapsulation layer.
The 3086FR can be used as FR to ATM converter (ATM transport over DSL). In this case, configuration of
the unit involves the following steps:
• Configure the DSL interface (assigning all bandwidth to the serial port).
• Configure the serial port
• Configure the FR to ATM conversion
When the 3086FR Ethernet port is used to route data from and to the Ethernet port, the following steps are
required to configure the unit:
• Configure the DSL interface (assign bandwidth required to the serial port, the 3086FR will assign the
remaining bandwidth to the Ethernet port)
• Configure the serial port
• Configure the FR to ATM conversion
• Configure the WAN link layer 2 ( ATM)
DSL port
The DSL port (see figure 6) is located on the back of the unit, and is presented on an RJ-11 female jack. The
interface has a nominal impedance of 135-ohms. The Model 3086FR supports DSL communication between
a customer location and a central office from 192kbps to 2.3 Mbps.
Figure 6. DSL port location
Ethernet
10/100
V.35 Interface
DSL
connector
Power