Description:
------------
i have downloaded the skype free Skype4COM.dll and using it through the com object the code is also available on skype developer zone. 

Reproduce code:
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<?php
set_time_limit(0);
// Event sink:
class _ISkypeEvents {
   function AttachmentStatus($status) {
    echo ">Attachment status $status\n";
   }
   function CallStatus($call, $status) {
    echo ">Call $call->id status $status\n";
   }
 }
 
 // Create a Skype4COM object:
 $skype = new COM("Skype4COM.Skype"); 
 
 // Create a sink object:
 $sink =& new _ISkypeEvents ();
 $sink->convert = $skype->convert();
 
 // Connect to the sink:
 com_event_sink($skype, $sink, "_ISkypeEvents");
 
 // Create a conversion object:
 $convert = $skype->convert;
 $convert->language = "en";
 
 // Start the Skype client, minimized and with no splash screen:
 if (!$skype->client()->isRunning()) {
   $skype->client()->start(true, true);
 }
 
 // If the user status is not "online", change user status to "online":
 if ($skype->currentUserStatus() == $convert->textToUserStatus("OFFLINE")) {  
   $skype->changeUserStatus($convert->textToUserStatus("ONLINE"));
 }
 
 // Create a user object
 $user = $skype->user("viral2583");
 echo "User " . $user->handle . " online status is " . $convert->onlineStatusToText($user->onlineStatus) . "\n";
 
 // Place a call
 $call = $skype->PlaceCall($user->handle);
 
 // Wait for the call to be "in progress" and report an error if:
 while ($call->status <> $convert->textToCallStatus("INPROGRESS")) {
   if ($call->status == $convert->textToCallStatus("FAILED") || 
     $call->status == $convert->textToCallStatus("REFUSED") || 
     $call->status == $convert->textToCallStatus("CANCELLED") || 
     $call->status == $convert->textToCallStatus("FINISHED") || 
     $call->status == $convert->textToCallStatus("BUSY"))
     die ("Call status " . $convert->callStatusToText($call->status));
   else
     com_message_pump (500);       
 }
 
 // Send dtmf tones:
 com_message_pump (10000);
 if ($call->status == $convert->textToCallStatus("INPROGRESS")) $call->dtmf = "0";
 com_message_pump (500);
 if ($call->status == $convert->textToCallStatus("INPROGRESS")) $call->dtmf = "1";
 com_message_pump (500);
 if ($call->status == $convert->textToCallStatus("INPROGRESS")) $call->dtmf = "2";
 com_message_pump (500);
 if ($call->status == $convert->textToCallStatus("INPROGRESS")) $call->dtmf = "3";
 com_message_pump (500);
 if ($call->status == $convert->textToCallStatus("INPROGRESS")) $call->dtmf = "4";
 com_message_pump (500);
 if ($call->status == $convert->textToCallStatus("INPROGRESS")) $call->dtmf = "5";
 com_message_pump (500);
 if ($call->status == $convert->textToCallStatus("INPROGRESS")) $call->dtmf = "6";
 com_message_pump (500);
 if ($call->status == $convert->textToCallStatus("INPROGRESS")) $call->dtmf = "7";
 com_message_pump (500);
 if ($call->status == $convert->textToCallStatus("INPROGRESS")) $call->dtmf = "8";
 com_message_pump (500);
 if ($call->status == $convert->textToCallStatus("INPROGRESS")) $call->dtmf = "9";
 com_message_pump (500);
 if ($call->status == $convert->textToCallStatus("INPROGRESS")) $call->dtmf = "#";
 com_message_pump (500);
 if ($call->status == $convert->textToCallStatus("INPROGRESS")) $call->dtmf = "*";
 
 // Finish the call: 
 if ($call->status <> $convert->textToCallStatus("FINISHED")) $call->finish();
 
 //Sleep:
 com_message_pump (1000);
   
?>


Expected result:
----------------
it should call the phone if skype is running on system.

Actual result:
--------------
Fatal error: Uncaught exception 'com_exception' with message '<b>Source:</b> Skype4COM.Skype.1<br/><b>Description:</b> Wait timeout.' in D:\www\call1.php:41 Stack trace: #0 D:\www\call1.php(41): unknown() #1 {main} thrown in D:\www\call1.php on line 41