Cisco Prisma HDRx Reverse Optical Receiver Platform & Power Supply System
78-4000618-01 Rev C
3
Prisma HDRx Chassis Configuration and Monitoring Information,
Continued
RS-232 Port
The RS-232 port is located on the front panel of the HDRx NCM. This port is used to
connect the HDRx to the serial port of a laptop for communication, setup, and
upgrades.
Important: The RS-232 port should be used with caution and should only be used
Important: The RS-232 port should be used with caution and should only be used
for setup and firmware upgrades.
The RS-232 port is also used to perform field upgrades. The code loading routines
The RS-232 port is also used to perform field upgrades. The code loading routines
use special ASCII characters to perform different functions. It is possible to
accidentally send a control character sequence that initiates code loading. The
control character sequence that initiates code loading could be sent inadvertently if
the laptop connected to the NCM is rebooted or the laptop goes into standby mode.
If the NCM is set into code loading mode, the only way to exit that mode is to cycle
power to the NCM.
HDRx Chassis ID Updating Using NCM
If the user wants to update the chassis ID for an HDRx chassis, the user must cycle
power to the NCM. Power can be cycled by physically removing the NCM from the
chassis or removing the power cable to the chassis.
Note: The HDRx does not support Intelligent Communications Interface Module
Note: The HDRx does not support Intelligent Communications Interface Module
(ICIM) chassis ID update configuration feature at the current time.