IBM International ISDN User Manual page 173

CD-ROM, then answer "Yes" to the question "Do you
want to keep this file?" The file "NDIS.VXD" that was
copied on to your system by the ISDN Accelerator Pack
v1.1 setup is more recent than the version on the Win-
dows 95 CD-ROM.
10. The installation is then complete. After restarting the
computer, the ISDN Accelerator Pack v1.1 is ready to use
in conjunction with the NDIS WAN CAPI Driver for Win-
dows 95.
13.1.3 Connections to Internet Service Providers (ISPs)
There are no binding standards for ISDN dial-up access to
ISPs. PPP and SLIP protocol variants, fixed and dynamically
assigned IP addresses, static or dynamic name server ad-
dresses and a variety of authentication procedures are all
possible.
For TCP/IP connections with the NDIS WAN driver, you must
use 32-bit client software (such as web browsers and FTP cli-
ents), and not 16-bit software for Windows 3.x. Otherwise, no
IP connection can be established with Windows 95's 32-bit
TCP/IP protocol stack.
13.1.3.1 ISDN B Channel Protocols and PPP Variants
Many Internet providers use HDLC or the X.75 protocol on the
ISDN B channel. Two protocol variants are used for PPP con-
nections: "PPP over ISDN", based on RFC 1618 and also
known as synchronous PPP; and "modem-style PPP", based
on RFC 1162 and also called asynchronous PPP.
Your Internet Service Provider can tell you which protocol
combinations and authentication procedures you need for
ISDN access.
Incorrect protocol settings will result in either immediate ter-
mination of the connection, or failure to establish a connec-
tion at all, with the Dial-Up Networking error message: "The
computer you are dialing in to is not answering."
Unlike the ISDN CAPI Port Driver, the NDIS WAN CAPI Driver
works only with the following protocol combinations:
Connections to Internet Service Providers (ISPs)
ISDN PC Card – 13 Using NDIS 173