Nortel 4134 安装指导
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Nortel Secure Router 4134 hardware components fundamentals
Figure 7
2-port ISDN BRI U Small Module
2-port ISDN BRI U Small Module
Table 4
Cable and connectors
Cable and connectors
Port
Connector
Recommended
cable type
cable type
Minimum
cable length
cable length
Maximum
cable length
cable length
BRI S/T or U
RJ-45
BRI S/T: Two
75 to 150 ohm
balanced twisted
pairs (CAT-3)
BRI U: One
twisted pair—u
nloaded CAT-3
loops
75 to 150 ohm
balanced twisted
pairs (CAT-3)
BRI U: One
twisted pair—u
nloaded CAT-3
loops
None
BRI S/T: Up to
1 Km = 3300 ft
(interior)
BRI U: Up to
18000 ft = 5.5
Km
1 Km = 3300 ft
(interior)
BRI U: Up to
18000 ft = 5.5
Km
Table 5
Module LEDs
Module LEDs
LED
Description
STAT
General module status:
•
Off: No power available to the module
•
Yellow: Out of service, or failed to initiate
•
Green: Power on and the module is operational.
LINK/STAT 1
Status of interface 1:
•
Off: Not connected or the interface is out of service.
•
Yellow: The interface is in a loopback mode or is running diagnostics
•
Green: The link or channel is active and receiving a valid signal
LINK/STAT 2
Status of interface 1:
•
Off: Not connected or the interface is out of service.
•
Yellow: The interface is in a loopback mode or is running diagnostics
•
Green: The link or channel is active and receiving a valid signal
Nortel Secure Router 4134
Installation — Hardware Components
NN47263-301
01.02
Standard
10.0
7 August 2007
Copyright © 2007, Nortel Networks
.