Multilink PPP Connections
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ISDN PC Card – 13 Using NDIS
13.1.5
Multilink PPP Connections
The capabilities of Windows 95 Dial-Up Networking are con-
siderably extended by installing the MS ISDN Accelerator
Pack. This extension allows you to set up “Multilink PPP”
connections, in which both ISDN B channels are bundled in a
single network connection to one destination. This doubles
the available bandwidth. Before you set up a multilink PPP
connection, please note the following:
•
Connection charges will be incurred for both ISDN B
channels.
•
The remote site, e.g. your Internet Service Provider
(ISP), must also support multilink connections.
•
RAS connections (see Section 4) can also use multilink
PPP. This is done by configuring the second “modem”,
“NDI S WAN Line 2”, to answer incoming calls on the
RAS server.
To set up a multilink PPP connection, proceed as follows:
1.
Create a new connection in the Dial-Up Networking win-
dow.
2.
Click the connection with the right mouse button and
select “Properties”.
3.
Click “Settings” in the “Set additional devices” field.
4.
Activate the option “Use additional devices”, then click
“Add”.
5.
In the “Device Name” list, select the modem entry not
yet used, e.g. “NDI S WAN Line 2” I n the “Phone num-
ber” field, enter the same number you entered when
creating the connection in Step 1 above.
6.
Click “OK” to close the dialog.
Now when you activate this dial-up connection, the system
will automatically attempt to connect to the destination ISDN
number using both I SDN B channels. I f only one I SDN B
channel can be used –if your ISP does not support multilink
PPP for example– no message will appear to indicate the
fact. You can see how many B channels have actually been
