Hello Everyone,
 
  I have been advised to use JMF for sending an audio file after the call is connected as the Cisco JTAPI implementation doesn't support javax.telephony.media.* , and hence its methods can not be used. The problem however is that I amfinding it very difficult to have the two integrated (JTAPI and JMF).
 
  I am able to caputure the callConnectedEv and I guess, in that block of callConnectedEv, that I have to use the JMF portion when the stream will be sent to the receiver. The issue is that how will we connect the two pieces. How would my JMF piece know that it is this connection that the stream should be transmitted.
 
Can some one who has an idea on this or has worked with similar kind of problem throw some light on this. Any sample piece of code would be of great help. Any new solution without the use of JMF to pass audio file in Cisco JTAPI is also welcomed
 
Thanks
Manas Varma

Hi Sergei,

Can you provide some code example? As Manas Varma, i spent my last weeks trying to put JMF and JTAPI working together, but no luck with this.

Abhishek, we use JMF in our applications in many circumstances and with huge load too (SPANless recorder as example). Yes, it was buggy, but i am have fixed some JMF sources and wrote some plugins (RTPConnectors and DataSources) and it works fine for us. I think writing library of the same level is very expensive. I think this is best JAVA solutuon by its time/cost.

Nuno, i dont understand what you mean when you said " put JMF and JTAPI working together".

Manas, i dont understand what case you trying to implement, please give me more details.

Hi Sergei

When i say put JMF and JTAPI working toghether, i mean the same you suggest to Manas Varma, use a cti port to transmit the audio file to the call. If you can provide some snippet of code, i will be very grateful. I never worked with JMF, and i can't understand the examples i saw, and i don't have experience working with cti ports in JTAPI. Please help me if you can.
Thanks in advance.

Regards
Nuno Magalhães

This is will be a very huge snippet. You must read JMF fundamentals. And there are many code examples of using JMF.

Manas, IP Phones Services may be helpful for you for playing a sound to Agent (see RTPRx command).

In all cases you got an IP address and port (from CTI port OutputStarted event or from RTPRx command) where you must play a sound in desired format via RTP protocol (in most cases PCMU 8000 samples 20 ms). There are many examples on the net of how to play a sound file via network.

Don't use a medialocator as output, use RTPManager for transmitting processor output. And, by default JMF make packet size bigger than you want and in result you transmitting in format of 60 msec between packets instead of 20 msec. Most of cisco phone will play it fine, but some models will play nothing, you must do one of two things: get Control of RTPPacetizer from processor and set right packet size or find a source of RTPPacketizer on the net, compile your own class and make your own JMF jar.

Hi All,

We have incorporated the JMF integration with JTAPI and are able to send the audio file over the Call after the call is connected. However, what we have observed is that there is a distinct "noise" that gets transmitted along with the wave file , making it absouloutely impossible for the reciever at the other end to listen. I presume , its an issue with codec

Below is the snippet , where we have passed the codec information. Can you please help us in finding out , where the problem lies. Whats the fault in the codec or is our assumption of a codec fault itself is wrong and the noise is due to some other reason ?

Thanks
Manas Varma

processr.setContentDescriptor( new ContentDescriptor( ContentDescriptor.RAW_RTP));
TrackControl track[] = processr.getTrackControls();
boolean encodingOk = false;

for (int i = 0; i < track.length; i++)
{
if (!encodingOk && track instanceof FormatControl)
{

if (((FormatControl)track). setFormat( new AudioFormat(AudioFormat.ULAW_RTP,
8000,
8,
1)) == null)
{

track.setEnabled(false);

}
else {


encodingOk = true;
}
}
else
{
track.setEnabled(false);
}
}

Hi Sergei & Manas,

We are facing some issue while trying to play wav file to phone using CTI Port. I am attaching my code 7 excecption here (value of i will indicate where we r geiing the error i.e. in line sendStream = rtpManager.createSendStream(dataOutput, 1); in our case) -


==================== CODE ===================================
SendStream sendStream;
ip="192.168.4.120";
RTPManager rtpManager = RTPManager.newInstance();
i=1;
SessionAddress localAddress = new SessionAddress();
i=2;
rtpManager.initialize(localAddress);
i=3;
InetAddress ipAddress = InetAddress.getByName(ip);
i=4;
System.out.println(" ********* ipAddress ************ "+ipAddress);
SessionAddress remoteAddress = new SessionAddress(ipAddress, 8500);
i=5;
rtpManager.addTarget(remoteAddress);
i=6;
DataSource dataOutput = Manager.createDataSource(new MediaLocator("file:\\c:\\a.wav") );
i=7;
sendStream = rtpManager.createSendStream(dataOutput, 1);
i=8;
mediaProcessor = Manager.createProcessor(dataOutput);
i=9;
mediaProcessor.setContentDescriptor(new ContentDescriptor(ContentDescriptor.RAW_RTP));
i=10;
mediaProcessor.configure();
i=11;
sendStream.start();
i=12;
mediaProcessor.start();
i=13;

=================================================================

********************* EXCEPTION *************************************

java.lang.ClassCastException: com.sun.media.protocol.file.DataSource cannot be cast to javax.media.protocol.PushBufferDataSource i 7

******************************************************

Your input will help me to proceed further.

Thanks in advance.

Regards,
Vinay

you make mistake in your code, i think this is what you want :

SendStream sendStream;
ip="192.168.4.120";
RTPManager rtpManager = RTPManager.newInstance();

InetAddress ipAddress = InetAddress.getByName(ip);

//This you need to do to avoid a trasmit start lag (Force DNS method)
byte[] badr = ipAddress.getAddress();
ipAddress = InetAddress.getByAddress(InetAddress.getLocalHost().getHostName(), badr);

SessionAddress localAddress = new SessionAddress(InetAddress.getLocalHost(), someLocalPort);

rtpManager.initialize(localAddress);

SessionAddress remoteAddress = new SessionAddress(ipAddress, 8500);

rtpManager.addTarget(remoteAddress);

//This is not output datasource! This is input datasource!
DataSource dataInput = Manager.createDataSource(new MediaLocator("file:\\c:\\a.wav") );

ProcessorModel prm = new ProcessorModel(dataInput , new ContentDescriptor(ContentDescriptor.RAW_RTP), new AudioFormat(AudioFormat.ULAW_RTP, 8000, 8, 1));

Processor processor = Manager.createRealizedProcessor(prm);

//This is output datasource
DataSource dataOutput = processor.getDataOutput();

sendStream = rtpManager.createSendStream(dataOutput, 1);

sendStream.start();

mediaProcessor.start();

You can pass 0.

Hi Sergei,

We have changed our code as per your suggestion, now we are not getting any error but nothing is palying on my phone.
We are initiating call from CTI Port to normal phone and capturing the remote phone IP and port and trying to send audio stream on remote ip and port.

Are we doing anything wrong in our code or as concept wise?

Thanks & Regards,
Vinay

System.out.println("**************** Start JMF ********************** ");
Format[] FORMATS = new Format[]{new AudioFormat(AudioFormat.ULAW_RTP,8000,8,1)};
ContentDescriptor CONTENT_DESCRIPTOR = new ContentDescriptor(ContentDescriptor.RAW);
System.out.println(port+" ********* ipAddress ************ "+ip);

SendStream sendStream;
ip="192.168.4.120";
RTPManager rtpManager = RTPManager.newInstance();
i=1;
InetAddress ipAddress = InetAddress.getByName(ip);
i=2;
//This you need to do to avoid a trasmit start lag (Force DNS method)
byte[] badr = ipAddress.getAddress();
i=3;
ipAddress = InetAddress.getByAddress(InetAddress.getLocalHost().getHostName(), badr);
i=4;
SessionAddress localAddress = new SessionAddress(InetAddress.getLocalHost(), 8500);
i=5;
rtpManager.initialize(localAddress);
i=6;
SessionAddress remoteAddress = new SessionAddress(ipAddress, port);
i=7;
rtpManager.addTarget(remoteAddress);
i=8;
//This is not output datasource! This is input datasource!
DataSource dataInput = Manager.createDataSource(new MediaLocator("file:\\c:\\miles.wav") );
i=9;
ProcessorModel prm = new ProcessorModel(dataInput ,FORMATS, CONTENT_DESCRIPTOR);
i=10;
Processor processor = Manager.createRealizedProcessor(prm);
i=11;
//This is output datasource
DataSource dataOutput = processor.getDataOutput();
i=12;
sendStream = rtpManager.createSendStream(dataOutput, 0);
i=13;
sendStream.start();
i=14;
processor.start();
i=15;

Hi Sergei,


Thanks my Problem is solve.


Thanks & Best Regards
Vinay

Please, ask this question at JMF forums. This is not Cisco related question.