public byte[] CallData { get; }

Public ReadOnly Property CallData As Byte()
	Get

public:
property array<unsigned char>^ CallData {
	array<unsigned char>^ get ();
}

Property Value

Call data is a variably sized buffer that can be used to accumulate information about a call. This information becomes available to all applications that own or monitor the call.

For example, the initial handler of an incoming call might request and enter client account information into a call data buffer, and then subsequent handlers would not have to repeat the request.

Depending on the telephony service provider (TSP), the CallData member can be propagated to all applications monitoring the call, including those on other machines (through the server), and can travel with the call when it is transferred. Not all TSPs support use of this information.

Reference