Cisco DVR Configuration Manual page 37

How Is Stand-Alone Mode Enabled?
Before a DVR can be placed in stand-alone mode, the set-top must first be authorized
for stand-alone mode with a Stand-Alone package from the headend. Once
authorized, the absence of system information (SI) data on the forward data channel
(FDC) tells the client to enable stand-alone mode for set-tops authorized with the
Stand-Alone package.
4011411 Rev B
Stand-Alone Authorization: Authorize DVRs for Stand-Alone Mode
The headend authorizes a DVR for stand-alone mode by
sending a Stand-Alone package to the DVR.
The client receives the package authorizing it for stand-alone
mode and stores a stand-alone authorization flag in nonvolatile
memory (NVM).
The subscriber powers down and disconnects the DVR so that it
can be moved from its current location. As part of the
disconnection process, the RF cable is disconnected from the
CABLE IN port on the back of the set-top so that the set-top
cannot communicate with the DBDS network.
When the set-top is in its new location, the subscriber connects
the set-top to the TV, connects the TV and set-top to a power
source, and presses the Power button on the front panel of the
set-top to reboot the set-top.
When the set-top reboots, the client begins a timer to determine
if the set-top is connected to the headend. If the client finds no SI
data within the timer period, the client checks the NVM for the
authorization flag.
If the client finds the flag set for authorization, it enters
standalone mode and displays the barker shown to the left to
notify the subscriber that the DVR is now in stand-alone mode.
Note: Whenever the Guide key is pressed and the DVR is in
stand-alone mode, the SARA client displays a barker indicating
that the program guide is unavailable.
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