Isdn Bri S/T And Isdn Bri U Small Modules - Nortel Secure Router 4134 Installation — Hardware Components

Table 2
Cable and connectors
Port
Connector
T1/E1 RJ45
Table 3
Module LEDs
LED
STAT
LINK/STAT 1
LINK/STAT 2
(applicable to 2-port
module only)

ISDN BRI S/T and ISDN BRI U Small Modules

You can use the ISDN BRI modules to provide backup network
connectivity if the primary interface fails. The Dial-on-Demand Routing
(DDR) feature on the ISDN BRI Small Modules enables you to configure
the ISDN interface as a backup interface.
You can use the ISDN BRI U module at either the Line Termination (LT)
end (that is, the Central Office) or Network Termination (NT) end (that is,
Customer Premises) of a two-wire, long-haul connection to the PSTN.
Copyright © 2007, 2008 Nortel Networks
.
Recommended
cable type
T1: Dual twisted
pair, 100 ohm,
CAT3 or better
E1: Dual shielded
twisted pair, 120
ohms, or dual 75
ohm coax cables
Description
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.
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
Status of interface 2:
•
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 02.01 Standard
18 February 2008
Interface modules for the Secure Router 4134 29
Minimum
cable length
None
Maximum
cable length
T1: DSX1
(interior) from 0
to 655 ft.
DS1 (exterior)
from 0 to
approximately
15 000 ft.