我陷入了TAPI编程。我创建了一个监控电话活动的程序。一切都很好,但现在我想实现一个功能,直接接受和拒绝来自网络的电话。
我完成的工作如下:namespace Shared
{
public partial class Site : System.Web.UI.MasterPage
{
public static ITAddress ln;
static int index = -1;
static int line;
static ITAddress[] ia;
protected void Page_Load(object sender, EventArgs e)
{
#region TAPI
TAPIClass tobj;
int[] registertoken;
tobj = new TAPI3Lib.TAPIClass();
tobj.Initialize();
IEnumAddress ea = tobj.EnumerateAddresses();
uint lines;
uint arg3 = 0;
int TotalLines = 0;
lines = 0;
foreach (TAPI3Lib.ITAddress ad in (tobj.Addresses as TAPI3Lib.ITCollection))
{
TotalLines++;
}
callnotification cn = new callnotification();
tobj.ITTAPIEventNotification_Event_Event += new TAPI3Lib.ITTAPIEventNotification_EventEventHandler(cn.Event);
tobj.EventFilter = (int)(TAPI_EVENT.TE_CALLNOTIFICATION |
TAPI_EVENT.TE_DIGITEVENT |
TAPI_EVENT.TE_PHONEEVENT |
TAPI_EVENT.TE_CALLSTATE |
TAPI_EVENT.TE_GENERATEEVENT |
TAPI_EVENT.TE_GATHERDIGITS |
TAPI_EVENT.TE_REQUEST);
registertoken = new int[TotalLines];
ia = new TAPI3Lib.ITAddress[TotalLines];
for (int i = 0; i = 0)
{
ln = ia[line];
}
IEnumCall ec = ln.EnumerateCalls();
uint arg = 0;
ITCallInfo ici;
try
{
ec.Next(1, out ici, ref arg);
ITBasicCallControl2 bc = (TAPI3Lib.ITBasicCallControl2)ici;
if (ici != null && ici.CallState == CALL_STATE.CS_OFFERING)
{
if (bc != null)
{
bc.Answer();
}
}
}
catch (Exception ex)
{
COMException comEx = ex as COMException;
if (comEx != null)
comEx.ErrorCode.ToString();
else
{
string aa = ex.Message;
}
}
//addtolist("Call Offering from " + callernumber + " to Ext " + viaextension + " via DID " + DIDNumber);
break;
case TAPI3Lib.CALL_STATE.CS_IDLE:
//addtolist("Call is created!");
break;
}
break;
}
}
catch (Exception ex)
{
//MessageBox.Show(ex.StackTrace.ToString());
}
}
}
#endregion
}
}
我总是得到ITBasicCallControl2 bc NULL,当我按下“接受”按钮时,没有任何反应。
答案 0 :(得分:3)
好的,为了成功接听电话,你要做的第一件事就是用所有者权利注册你的线路。
tobj.RegisterCallNotifications(ln, true, true, TapiConstants.TAPIMEDIATYPE_AUDIO, 2);
之后,您可以使用EnumerateCalls()遍历每个调用,或者您可以实现ITTAPIEventNotification接口,以便在callstate(例如)中发生更改时收到通知。 无论如何,在某种程度上,您已找到要回答的呼叫。现在,您需要确保呼叫处于警报状态(CS_OFFERING为入站呼叫),然后才能最终调用应答方法。
try
{
ec.Next(1, out ici, ref arg);
if (ici != null && ici.CallState == CALL_STATE.CS_OFFERING)
{
ITBasicCallControl2 bc = (TAPI3Lib.ITBasicCallControl2)ici;
if (bc != null)
{
bc.Answer();
}
}
}
catch (Exception exp)
{
COMException comEx = exp as COMException;
if (comEx != null)
MessageBox.Show(comEx.ErrorCode.ToString());
else
MessageBox.Show(exp.Message);
}
如果您要回答的调用不在callstate CS_CONNECTED中,则该方法将抛出一个错误代码为0x800040010的COMException。
有关ITTAPIEventNotification界面的更多信息,请参阅https://msdn.microsoft.com/en-us/library/windows/desktop/ms732506(v=vs.85).aspx
编辑:
如果您想检测新来电,我建议您使用TE_CALLNOTIFICATION-Event,因为每次新来电时只会触发一次。 每次调用状态更改时都会触发TE_CALLSTATE-Event。
现在,我已经更新了callnotification类:
public class callnotification : TAPI3Lib.ITTAPIEventNotification
{
public InboundCall OnNewIncomingCall;
public void Event(TAPI_EVENT TapiEvent, object pEvent)
{
switch (TapiEvent)
{
case TAPI_EVENT.TE_CALLNOTIFICATION:
this.OnCallNotification((ITCallNotificationEvent)pEvent);
break;
}
}
private void OnCallNotification(ITCallNotificationEvent callNotification)
{
ITCallInfo ici = callNotification.Call;
if (ici != null && ici.CallState == CALL_STATE.CS_OFFERING)
this.OnNewIncomingCall(ici);
}
}
如果有新的入站呼叫,我还宣布了一个委托方法:
public delegate void InboundCall(ITCallInfo ici);
因此,您对callnotification事件的初始化可能如下所示:
callnotification cn = new callnotification();
cn.OnNewIncomingCall += this.OnNewIncomingCall;
最后,在OnNewIncomingCallMethod中,您可以接听电话:
private void OnNewIncomingCall(ITCallInfo ici)
{
ITBasicCallControl bcc = (ITBasicCallControl)ici;
if (bcc != null)
{
string caller = ici.get_CallInfoString(CALLINFO_STRING.CIS_CALLERIDNUMBER);
DialogResult dlg = MessageBox.Show(string.Format("New incoming call from {0}\r\nDo you wish to answer the call now?", caller), "New incoming call", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (dlg == System.Windows.Forms.DialogResult.Yes)
bcc.Answer();
}
}
我已经使用我的附加功能测试了您的代码并且运行正常。如果您在回答或初始化期间有任何异常,请告诉我。