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NDIS WAN Operations that Support Telephonic Services (NDIS 5.1)

Note   NDIS 5. x has been deprecated and is superseded by NDIS 6. x. For new NDIS driver development, see Network Drivers Starting with Windows Vista. For information about porting NDIS 5. x drivers to NDIS 6. x, see Porting NDIS 5.x Drivers to NDIS 6.0.

This section describes how NDIS WAN miniport drivers implement telephonic services using the functions available through the NDISTAPI driver and NDISWAN driver. A TAPI-capable NDIS WAN miniport driver brings up lines, sets up calls and closes calls using TAPI and WAN OIDs

The NDISTAPI driver communicates with telephony applications through a telephony service provider. For more information, see the Telephony Application Programming Interface (TAPI) in the Microsoft Windows SDK.

The following topics describe the NDISTAPI driver and how to implement telephonic services in NDIS WAN miniport drivers:

Line Devices, Addresses, and Calls

NDISTAPI Interface

Set and Query Requests

Maintaining State Information

Setting Up Handles

TAPI Registration

TAPI Initialization

Line Open

Accepting an Incoming Call

Making a TAPI Call

Unsolicited Event Handling

Line Up Indication

Call Line Shutdown



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