Novell LINUX ENTERPRISE SERVER 11 - ADMINISTRATION Administration Manual page 247

ISDN Card Connected to a Private Branch Exchange
Again, the configuration may vary depending on the equipment installed:
1. Smaller private branch exchanges (PBX) built for home purposes mostly use
the Euro-ISDN (EDSS1) protocol for internal calls. These exchanges have an
internal S0 bus and use internal numbers for the equipment connected to them.
Use one of the internal numbers as your MSN. You should be able to use at least
one of the exchange's MSNs that have been enabled for direct outward dialing.
If this does not work, try a single zero. For further information, consult the
documentation delivered with your phone exchange.
2. Larger phone exchanges designed for businesses normally use the 1TR6 protocol
for internal calls. Their MSN is called EAZ and usually corresponds to the direct-
dial number. For the configuration under Linux, it should be sufficient to enter
the last digit of the EAZ. As a last resort, try each of the digits from 1 to 9.
For the connection to be terminated just before the next charge unit is due, enable
ChargeHUP. However, remember that may not work with every ISP. You can also
enable channel bundling (multilink PPP) by selecting the corresponding option. Finally,
you can enable the firewall for your link by selecting External Firewall Interface and
Restart Firewall. To enable the normal user without administrator permissions to activate
or deactivate the interface, select the Enable Device Control for Non-root User via
KInternet.
Details opens a dialog in which to implement more complex connection schemes which
are not relevant for normal home users. Leave the Details dialog by selecting OK.
In the next dialog, configure IP address settings. If you have not been given a static IP
by your provider, select Dynamic IP Address. Otherwise, use the fields provided to
enter your host's local IP address and the remote IP address according to the specifica-
tions of your ISP. If the interface should be the default route to the Internet, select Default
Route. Each host can only have one interface configured as the default route. Leave
this dialog by selecting Next.
The following dialog allows you to set your country and select an ISP. The ISPs included
in the list are call-by-call providers only. If your ISP is not in the list, select New. This
opens the Provider Parameters dialog in which to enter all the details for your ISP.
When entering the phone number, do not include any blanks or commas among the
digits. Finally, enter your login and the password as provided by the ISP. When finished,
select Next.
Basic Networking 233