Nortel Networks R2MFC User Manual

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24 Chapter 2 Overview
NN40010-300
RS232 port
There is an RJ-45 serial port connector named RS232 on the faceplate of the R2MFC MBM. The 
N0026100 cable, shipped with the R2MFC MBM, is used to connect a computer to the RS232 port 
for advanced configuration or for CLI-based diagnostics of the R2MFC MBM. 
 shows the pinout information to make a new N0026100 cable.
E1 Status LEDs
The R2MFC MBM has four visual status monitor indicators in the middle section of the faceplate. 
They are:
ERR Tx — indicates a Transmit error on the E1
ERR Rx — indicates a Receive error on the E1
ALM Tx — indicates a Transmit alarm on the E1
ALM Rx — indicates a Receive alarm on the E1
Bantam jacks
The R2MFC MBM contains Bantam Jacks in the middle of the faceplate, to be used for connecting 
diagnostic equipment. The jacks are labeled DIAG.
BNC and RJ-48 connectors
The R2MFC MBM has both BNC and RJ-48 external E1 connectors located on the far right of the 
faceplate. These connectors are used to connect the R2MFC MBM to the Central Office (CO). 
The default interface will be based on the country code selected. Mexico is the factory default. See 
 for the country code 
default settings.
R2MFC MBM back and underside elements
The back and underside of the R2MFC MBM contain the following elements: