OID_ATM_SIGNALING_VPIVCI

The OID_ATM_SIGNALING_VPIVCI OID requests an ATM miniport driver to return the VPI and VCI to be assigned to the signaling VC as a structure of type ATM_VPIVCI, which is defined as follows:

    typedef struct _ATM_VPIVCI {
         ULONG Vpi;
         ULONG Vci;
 
    } ATM_VPIVCI, *PATM_VPIVCI;
  

The members of this structure contain the following information:

• Vpi
  The VPI of the signaling VC.

• Vci
  The VCI of the signaling VC.

In an environment that supports more than one host per ATM switch port, a miniport driver may acquire (from the registry, for example) an assigned VPI/VCI for a signaling VC. A signaling VC is a VC that the call manager uses to send and receive signaling messages to and from network control components, such as a switch.

A call manager can request the assigned signaling VPI/VCI so that it can appropriately specify a signaling VC.

If the miniport driver does not have an assigned signaling VC to return to the call manager, it returns NDIS_STATUS_NOT_SUPPORTED.

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