Edimax Technology HP-2002AV - Manual (Page 7)

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4.1.1 Joining a HomePlug Logical Network
Connect the new device to the powerline. Press the Group pushbutton on the
device for less than 3 seconds. Press the Group pushbutton on another device
connected to the same medium for less than 3 seconds. Wait a few seconds
for the two devices to form a network.
A join operation can be cancelled by pressing the Group pushbutton on the first
device again, for less than 3 seconds, instead of pressing the Group
pushbutton on the second device.
4.1.2 Leaving a HomePlug Logical Network
Press the Group pushbutton on the device for longer than 10 seconds. Wait a
few seconds for the device to reset and leave the network. Disconnect the
device from the powerline. The device is then free to join another HomePlug
logical network.
4.2 Parameter Information Block (PIB)
The PIB, or Parameter Information Block, contains configuration values that
establish device network identity, general capabilities and operational modes.
On boot, the hardware Bootloader copies firmware to SDRAM and starts
firmware execution. The firmware then copies the PIB to SDRAM, reads it and
sets appropriate program variables accordingly. Some PIB settings of general
interest are the MAC Address, Device Access Key (DAK) and Network
Membership Key (NMK).
4.2.1 Reset to Factory Default PIB
Press the Reset pushbutton on the device for less than 3 seconds to reset it to
factory default PIB.