HP AlphaServer TS15 Owner's Manual page 186

After downloading binary files, you can set the com1_mode environment variable from the
SRM console to switch back to Snoop mode or other modes for accessing the RMC. The
RMC will also switch back to Snoop mode when the system power is off or when no DCD
signal is detected on COM1.
Firm Bypass Mode
In Firm Bypass mode all data and control signals are routed directly between the system
COM1 port and the external COM1 port. The RMC does not configure or monitor the
modem. Firm Bypass mode is useful if you want the system, not the RMC, to fully control
the modem and you want to disable RMC remote management features such as remote dial-
in and dial-out alert.
You can switch to other modes by resetting the com1_mode environment variable from the
SRM console, but you must set up the RMC again from the local terminal.
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