ELSA Cable User Manual
Page 57
Technical basics
ELSA MicroLink Cable
49
programs on their respective channels. Specific channels are also set up for the
transmission of Internet content.
Synchronizing
Finding a
channel in the
broadband
network
After being switched on, the cable modem searches the entire frequency band for a
channel used by the provider to send information from the Internet. Because the
bandwidth is so great, the first time the log-on procedure might take a while. As soon
as the corresponding channel is found, the Sync LED on the
ELSA MicroLink Cable
flashes. The next time the cable modem is switched on, it will first look for the channel
it found the previous time, and thus find the wanted information at a substantially faster
rate. However, if the cable modem is used on another connection, it may have to search
the entire frequency band again.
To speed up the search, providers can preset the
ELSA MicroLink Cable to search the
particular frequency bands that they normally use.
Do not change these settings yourself without consulting your provider.
Registration
Exchange of
administration
information
between head-
end and cable
modem
When a channel for communication with the provider has been found, the headend gives
a set of instructions to the cable modem that is important to the operation in the cable
network. This process is called registration. It includes:
The confirmation of the found channel or the transfer to another channel
The allocation of an IP address that is valid in the cable network, along with a
suitable netmask
Information on the provider’s server addresses
The current time
After the registration is completed successfully, the Reg’d LED on the
ELSA MicroLink
Cable lights up and the cable modem is ready to access the Internet.