Connection-Oriented Operations Performed by Call Managers

A call manager performs:

• Registers and deregisters one or more address families (AFs).

  A call manager registers one or more address families with NDIS . By registering an address family, a call manager advertises its call manager services (specifically, a signaling protocol) to bound connection-oriented clients. For information about registering entry points with NDIS, see CoNDIS Registration.

• Registers and deregisters SAPs at the request of a connection-oriented client.

  A call manager receives a bound connection-oriented client's requests to register SAPs and to deregister SAPs. The call manager sends signaling messages over the network to register or deregister SAPs on behalf of clients.

• Sets up an outgoing call at the request of a connection-oriented client.

  When a connection-oriented client makes an outgoing call, the call manager communicates (exchanges signaling messages) with network control devices, as necessary, to make a connection. If the call is accepted by the remote party, the call manager activates the VC that is created for the call.

• Sets up and indicates an incoming call to a connection-oriented client.

  A call manager indicates to a bound connection-oriented client all calls that are addressed to a SAP registered by that client. Before indicating the incoming call to the client, the call manager initiates creation of a VC for the call then initiates activation of the VC.

• Communicates requests for a change in QoS.

  Depending on the signaling protocol, the call manager can communicate a request from the local client to change the QoS for an outgoing or incoming call or a request from the remote party to change the QoS for a call.

• Communicates requests to add and drop parties.

  A call manager communicates a local client's request to add a party to or drop a party from a point-to-multipoint call. A call manager also communicates a remote party's incoming request to drop itself from a point-to-multipoint call.

• Tears down a call.

  At the request of a connection-oriented client, a call manager closes a call by communicating with network control devices to terminate a connection. At the request of a remote party, a call manager indicates to a local connection-oriented client a remote party's request to close a call. In the process of tearing down a call, the call manager deactivates the VC that is used for the call. If the call manager created the VC (for an incoming call), the call manager can also delete the VC.

• Queries or sets information.

  A call manager can query or set information maintained by a bound connection-oriented client. A call manager can also respond to query and set operations from a bound connection-oriented client.

  In addition, a call manager can query or set information maintained by a bound miniport driver or by the miniport driver portion of a bound MCM driver.

• Inputsminiport driver status indications.

  A call manager inputs status indications from a bound connection-oriented miniport driver.