User`s guide

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This section of the web interface appears when the router is fitted with an optional internal
ISDN MODEM card. When first powered up, navigating to the Configuration – Network >
Interfaces > ISDN page will show a message indicating that the MODEM card does not
have a PPP instance associated with it. Follow the link on the page and select an unassigned
PPP interface to the MODEM. When the browser is refreshed and the Configuration –
Network > Interfaces > ISDN page redisplayed, it should show the parameters
described below, along with a message at the top of the page indicating which PPP instance
has been selected.
This ISDN interface is using PPP n
This message simply states which PPP instance has been assigned to the interface.
Description
The value in this text box is a memorable name for the interface. This may be useful when
referring to the interface, rather than having to remember the name and the function of the
interface.
Dial out using numbers
These four text boxes contain the telephone numbers that should be used, in sequence,
to make an outgoing connection.
Prefix n to the dial out number
The value in this text box specifies the dialling prefix to use, if needed. This may be
necessary when using a PABX.
Username
The text string text box is the username that should be used when using the PPP
instance to connect to the remote peer. This will normally be provided by an ISP for use
with a dial-in Internet access service.
Password
This text box contains the password to use for authenticating the remote peer and is
used in conjunction with the above username.
Confirm password
Type the password into this text box to enable the router to confirm that the password
has been entered identically in both boxes.
Allow the remote device to assign a local IP address to this router
When this radio button is selected, the remote peer will assign this PPP interface an IP
address.
Try to negotiate a.b.c.d as the local IP address for this router
If it would be useful, but not essential, to have a predefined IP address for the interface, the
second radio button should be selected and the desired IP address entered into the text box
to the right.
Use a.b.c.d as the local IP address for this router
If it is essential that the PPP interface has a specific IP address, this radio button should be
selected and the IP address entered into the text box.
Use the following DNS servers if not negotiated
Primary DNS server
The value in this text box is the IP address of the primary DNS server to use if a DNS
server is not assigned as part of the PPP negotiation and connection process. It is fairly