BinTec X4000, Руководство пользователя

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X4000 User’s Guide 141
Configuring WAN Interfaces
7
➤
Select D-Channel, if applicable.
➤
Select B-Channel 1: e. g. dialup.
➤
Select B-Channel 2: e. g. dialup.
➤
Press SAVE.
You have returned to the main menu. and the entries have been saved.
Incoming call
answering
If you use the ISDN BRI interface for dialup connections, you must now tell
X4000 how it should respond to incoming calls from the ISDN. X4000 distributes
the incoming calls to the appropriate internal services according to the settings
in the following menus.
X4000 supports the following services:
■
PPP (Routing):
The
➤➤
PPP service is X4000 ’s general routing service. This connects
incoming data calls from WAN partners’ dialup connections to your
➤➤
LAN . This enables partners outside your own local network to access hosts
within your LAN. This subsystem also enables outgoing data calls to be set
up to WAN partners outside your local network.
If the ISDN protocol is not detected, it can be entered manually under ISDN
Switch Type. The automatic D-channel detection is then switched off.
An incorrectly set ISDN protocol prevents ISDN connections being set up!
In most cases, you can accept the preset values for D-Channel, B-Channel 1
and B-Channel 2.
If you use an ISDN leased line and have requested a special service from your
service provider, it may be necessary to set the local side of the leased line at
this point (DTE or DCE). You must then ensure that the far end has set the
opposite value. You must also set D-channel, B-channel 1 and B-channel 2
to the same values, if you have selected several D-/B-channels under ISDN
Switch Type and the values can be changed.
This PPP routing is also used for X.25 connections.