Patton electronic Model 2711 - Manual (Page 5)

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2.3 SUPPORTED APPLICATION
The Model 2711 CSU/DSU is supplies the interface between the
telephone company and customer premises equipment (CPE) such as
a router. The 2711 can also be used as a high-speed short haul
modem for campus applications.
2.3.1 The 2711 as the Interface between the Telco and CPE
The Model 2711 Series provides the interface between the tele-
phone company and customer equipment, such as a router or switch
(See below).
2.3.2 The 2711 as a High-Speed Short Range Modem
The Model 2711 Series can also be installed into high-speed cam-
pus applications. In this application, a pair of Model 2711 Series units
operate as short range modems (See below).
RXD LOS ALM ERR T/L PWR TXD
Model 2700
RXD LOS ALM ERR T/L PWR TXD
Model 2700
Model 2711
Model 2711s
Router
Bridge/Router
Bridge/Router
1.544Mbps
or nx56/64
1.544MBps
or nx56/64
LAN
LAN
LAN
T1
Network
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3.0 CONFIGURATION
Before placing the Model 2711 into service, the unit must be con-
figured to match both the DTE and Network interface parameters.
Configuration may be accomplished using pc board mounted DIP
Switches or via software using the RS-232 control port.
3.1 CONFIGURATION USING DIP SWITCHES
Configure the Model 2711 using a DIP switch package located on
the bottom side of the printed circuit board (See Figure 1, below).
The Model 2711 DIP switches can be configured as either “On” or
“Off”. Figure 2 (below) shows the orientation of the DIP switches with
respect to ON/OFF positions.
Figure 1. Model 2711 Series bottom view, showing location of DIP switches
ON
1 2 3 4 5 6 7 8
DIP Switches SW1 & SW2
1 2 3 4 5 6 7 8
ON
OFF
ON
Figure 2. Close up of DIP switches showing ON/OFF positions.
ON
OFF
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
SW2 SW1