This section describes the remedies for a few errors which could occur while operating the NDIS WAN CAPI Device Driver for Windows NT.

Symptom: CAPI applications which accept incoming data calls (with the ISDN service indicator DATA64K) do not work alongside the NDIS WAN CAPI Device Driver for Windows NT and the RAS Server mode.

Cause: Both the NDIS WAN CAPI Device Driver for Windows NT and the other CAPI applications are attempting to answer the same incoming calls.

Remedy: Because the incoming calls for the CAPI applications and the RAS both have the same service indicator, they can only be distinguished by assigning them different Multiple Subscriber Numbers (MSNs, on DSS1 lines). To assign an MSN, proceed as follows:

Configure an MSN (on a DSS1 line) for the NDIS WAN CAPI Device Driver for Windows NT. To do this, open the Network Settings (Start -> Settings -> Control Panel -> Network) and click the Network Adapter tab. Select the NDIS WAN CAPI Device Driver in the list and click Properties. The NDIS WAN CAPI Device Driver for Windows NT properties window opens, and you can enter one of your ISDN line's MSNs.

Symptom: PPP connections fail.

Cause: The Windows NT RAS Service uses PPP over ISDN in accordance with RFC 1618. This protocol is also referred to as “synchronous PPP”, and is a widely-used standard for network connections over ISDN.

Remedy: The remote computer or Internet provider must also support this standard. You will find further information in the Word document STRUCTUR.DOC, which contains the specifications for the NDIS WAN CAPI Device Driver for Windows NT.

Remedy: The remote computer or Internet provider must also support this standard. You will find further information in the Word document STRUCTUR.DOC, which contains the specifications for the NDIS WAN CAPI Device Driver for Windows NT.

Cause: CompuServe does not use the standard PPP over ISDN (RFC 1618).

Remedy: Use a fossil device driver (such as cFos/NT) that provides a suitable modem emulation.

Legal notice

The AVM NDIS WAN CAPI Device Driver for Windows NT is commercial software owned by AVM Computersysteme Vertriebs GmbH, which provides the software free of charge for use by its customers.

The AVM NDIS WAN CAPI Device Driver for Windows NT and accompanying documentation may not be offered, used, altered, or marketed, nor may any of its identifying characteristics be altered, as part of offerings by third parties, such as hardware and software manufacturers, without written permission from AVM Computersysteme Vertriebs GmbH. Bundling with hardware or software not manufactured by AVM is expressly prohibited. Reverse engineering of the AVM NDIS WAN CAPI Device Driver for Windows NT, in whole or in part, is not permitted.

12. Using NDIS 175

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IBM 19K5716 manual Legal notice