ELSA LANCOM Business 6000, Manual

Page: 86 / 174

Operating modes and functions
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ELSA LANCOM Business 6000
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86
EN
A data packet from a computer initially finds the path to the Internet through
the IP address of the receiver. The computer sends the packet with this
address over the LAN to the router. Using the IP address, the router then
searches the IP routing table and finds the remote station that belongs to the
address, for example 'Provider_A'. Using this name, the router then checks
the ISDN name list and finds the call number for the corresponding remote
station that can be reached by ISDN, including the communication layer that
is to be used. The router also obtains the user name and password required
for login to provider A from the PPP list.
When this is done, the router can establish a connection to the router of the
provider over the ISDN line. Once the connection has been established, the
router can forward the data packet to the Internet over the ISDN line.
The following sections introduce the ISDN name list and briefly describe the
parameters they contain, describe their connections to other lists and their
parameters, and how they are configured in the software.
The PPP list is described in a separate chapter (see 'PPP List').
For further information on the IP routing table, see the 'IP routing' section.
Provider A
Internet user's PC
Router
Data packet with
IP address
IP routing tab. IP address
➮
name of remote site
ISDN list Remote site
➮
number, communication layer
PPP-list Remote site
➮
user name and password