Nortel Networks BSG12ew User Manual

Hardware overview

NN47928-302

NN47928-302

The following table provides descriptions of the components of the BSG8ew/12ew/aw/tw 
faceplates.

Power and system LEDs

Both

show the power and system status

Power Over Ethernet (PoE) 

LEDs

BSG12ew/aw/tw only indicate that the associated port is receiving power. There is 

one PoE LED for each LAN port. 

Link/acc status LEDs

Indicate the activity and status of the LAN port. The LED 

becomes active when you connect an Ethernet cable to the 

corresponding LAN port.

Power connector

Both

The BSG8ew uses a 12 V DC power adaptor connected with 

a faceplate barrel connector.
The BSG12ew/aw/tw use a 48 V DC rear faceplate connected 

with a 4-pin DIN connector.

Retention clip mounting hole

BSG8ew only

A small hole into which you insert the power retention clip. 

The retention clip secures the power connector to the unit. For 

BSG12, the 4-pin DIN connector has self-retention 

mechanical design. 

Reset system

On the BSG8ew, the system is reset using an external reset 

button.
The board is designed to offer an external physical reset 

button from the faceplate as a pin-hole access. The reset 

asserted for less than 5 seconds activates a general digital 

board reset without affecting system parameters stored in 

FLASH memory. The reset asserted for more than 5 seconds 

activates a total system revert to factory default parameters. 

In this scenario, all provision and configured data in persistent 

memory (FLASH) is lost and factory defaults values are 

restored.
If one of the sub-systems fails during reset, a syslog is 

generated and stored in FLASH. The log contains the ID of 

the failed subsystem. 
On the BSG12ew/aw/tw, the system is reset using an 

hardware reset to factory. The hardware reset is performed by 

connecting a serial console cable to console port faceplate. 

The standard console cable is provided out of box shipping. In 

the process, user needs to reset the BSG 12 in to factory 

defaults. Connect to the console cable to pc which is not 

protected and use the following CLI command.
bsg# system set factory default
bsg# reload
This will reboot BSG 12 with factory default settings.

FE LAN ports

On the BSG8ew, seven FE LAN ports are used to connect to 

the LAN.
The BSG12tw and BSG12aw have twelve PoE enabled FE 

LAN ports to connect to the LAN.
The BSG12ew has eleven PoE enabled FE LAN ports to 

connect to the LAN.

GigE LAN port

On the BSG8ew, one gigabite ethernet (GigE) LAN port 

supports data transfer rates of up to 1 000 Mbit/s.