6. Click OK to close the window.

Now when you activate this dial-up connection, the computer will automatically attempt to connect to the destination ISDN number using both ISDN B channels. If only one ISDN B channel can be used –if your ISP does not support multilink

PPPfor example– no message will appear to indicate the fact. You can see how many B channels have actually been connected, however, by double-clicking the Dial-Up Networking icon in the Windows 95 task bar. Click Details to manually connect and disconnect the second B channel as desired. This technique allows you to double the connection bandwidth as needed for such tasks as downloading large files from the Internet, and to reduce it again afterwards to avoid excessive charges.

Legal notice

The AVM NDIS WAN CAPI Device Driver is commercial software owned by AVM Computersysteme Vertriebs GmbH Berlin.

The AVM NDIS WAN CAPI Device Driver 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 and software not manufactured by AVM is expressly prohibited. Reverse engineering of the AVM NDIS WAN Device Driver, in whole or in part, is not permitted.

Possible faults and remedies

Fault condition: RAS (Dial-Up) Error “Connection has gone down”:

Possible cause: This common error message can have many causes, such as a busy remote terminal, faulty cabling, an incorrect D channel protocol, no CAPI available (ISDN adapter device driver not loaded), B channel already in use, etc.

Solution: Check the following:

Examine whether another CAPI application has access to the ISDN adapter and the ISDN line. If not, refer to the trouble-shooting section in the ISDN adapter manual.

Fault condition: CAPI applications that answer incoming data calls (with the service indicator DATA64K) are not functioning alongside the NDIS WAN CAPI Device Driver in RAS server mode.

Possible cause: Both the CAPI data application and RAS with the NDIS WAN CAPI device driver are trying to answer the same calls.

Solution: Assign a different Multiple Subscriber Number (MSN) to each application so that incoming calls can be differentiated.

Fault condition: Unable to establish PPP connection

Possible cause: The Windows 95 ISDN Accelerator Pack v1.1 uses the Point-to- Point Protocol (PPP) over ISDN as specified in RFC 1618. This protocol is also referred to as synchronous PPP, and is a standard in ISDN internetworking.

168IBM ISDN PC Card:User’s Guide

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IBM 19K5716 manual Legal notice, Possible faults and remedies