Hardware installation
24
WAN Access Routers Getting Started Guide
3 • Initial configuration
Installing an interface cable on the Black Box LR120A’s T1/E1 interface port
The Black Box Models LR120A and LR125A come with a selectable T1/E1 WAN interface (see
figure 4
).
Located on the back of the Black Box, the T1 and E1 interfaces are presented on an RJ-48C connector with
selectable line impedances of 100-ohms for T1 and 120-ohms for E1 lines (see
figure 5
). The LR125A also
comes with dual BNC for alternate connection to unbalanced 75-ohm E1 lines (see
figure 6
on page 25).
Figure 4. Rear View of the LR120A showing location of Ethernet and WAN connectors
Figure 5. RJ-48C pinout diagram
Crossover
10/100
Ethernet
WA
N
MDI-X
Crossover
10/100
Ethernet
WAN
Power
MDI-X
WAN connector
(RJ-48C)
Ethernet connector
(RJ-45)
10/100
Power
1 2 3 4 5 6 7 8
RX RX
TX
TX
Содержание LR120A
Страница 1: ...LR120A LR121A LR122A LR125A WAN Access Routers Getting Started Guide...
Страница 24: ...19 Chapter 2 Product Overview Chapter contents Introduction 20 Applications overview 21...
Страница 39: ...34 Chapter 4 Ethernet LAN Port Chapter contents Introduction 35 LAN connections 35 Ethernet Port 35...
Страница 115: ...110 Appendix B Cable recommendations Chapter contents Ethernet Cable 111 Adapter 111...
Страница 128: ......
