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CoNDIS TAPI Registration

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This section discusses how a CoNDIS WAN miniport driver indicates that it supports TAPI services and how it sets up TAPI-specific communications with the NDISWAN and NDPROXY drivers.

After a CoNDIS WAN miniport driver has registered its miniport driver entry points for one or more NICs, the following operations cause the NDISWAN and NDPROXY drivers to become associated, in a TAPI-specific way, with those NICs.

  • The CoNDIS WAN miniport driver calls the NdisMCmRegisterAddressFamilyEx function from within its MiniportInitializeEx function to register its call manager entry points and the address family type CO_ADDRESS_FAMILY_TAPI_PROXY. By doing so, the miniport driver advertises that it provides TAPI services.

  • NDIS calls NDPROXY's ProtocolCoAfRegisterNotify function to notify NDPROXY of the newly registered address family. NDPROXY's ProtocolCoAfRegisterNotify examines the address-family data and determines that it can use the TAPI services provided by the call manager that is integrated into the CoNDIS WAN miniport driver. A TAPI-capable CoNDIS WAN miniport driver is an integrated miniport call manager (MCM) driver.

  • NDPROXY calls the NdisClOpenAddressFamilyEx function to open the TAPI-proxy address family that is associated with the CoNDIS WAN miniport driver. NdisClOpenAddressFamilyEx registers NDPROXY's connection-oriented entry points with NDIS. These entry points are used to communicate with a TAPI-capable CoNDIS WAN miniport driver.

  • NDPROXY calls NdisCmRegisterAddressFamilyEx to register its call manager entry points and the address family type CO_ADDRESS_FAMILY_TAPI. By doing so, NDPROXY advertises that it implements TAPI services.

  • NDIS calls NDISWAN's ProtocolCoAfRegisterNotify function to notify NDISWAN of the newly registered address family. NDISWAN's ProtocolCoAfRegisterNotify examines the address-family data and determines that NDISWAN can use the TAPI services provided by NDPROXY.

  • NDISWAN calls the NdisClOpenAddressFamilyEx function to open the TAPI address family that is associated with NDPROXY. NdisClOpenAddressFamilyEx registers NDISWAN's connection-oriented entry points with NDIS. These entry points are used to communicate with NDPROXY.

  • NDISWAN calls the NdisClRegisterSap function to inform NDPROXY that NDISWAN can accept incoming calls on a particular Service Access Point (SAP). In this call, NDISWAN passes a CO_SAP structure that describes the SAP. NDISWAN sets the SapType member of CO_SAP to AF_TAPI_SAP_TYPE to specify that the SAP will be used for TAPI calls. NDISWAN sets the Sap member of CO_SAP to a string for a particular TAPI device class. A TAPI application provides this string when the application calls the TAPI lineGetID function. NDPROXY should notify NDISWAN about all incoming calls addressed to the SAP.