Anjali Jain (9910103580)
Nitin Bansal (9910103589)
Push-to-talk (PTT), also known as Press-to-
Transmit, is a method of having conversations
or talking on half-duplex commun...
Push to Talk over Cellular (PoC)
is a service option for a cellular
phone network that enables
subscribers to use their ph...
THREE WAYS OF TRANSMISSION ::
INTERFACE FOR USERS ::
Screen 1 Settings Communication
WHAT’S NEW??
• Low Noise
• Behaves same as
telephonic
conversation
not as Walkie -
Talkie
LIMITATION
• Within a building that means low range and
less distance covered
IMPLEMENTATION::
Sender: UDP Socket programming
1. Create UDP Socket for sending datagram
DatagramSocket socket = new Data...
Receiver: UDP Socket programming
1.Start listening for datagram on a certain socket
DatagramSocket socket = new DatagramSo...
RESEARCH PAPER
1. A Client-Side Design and Implementation for Push to Talk
over Cellular Service
http://ir.lib.nctu.edu.tw...
Push to-talk-android
Push to-talk-android
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Push to-talk-android

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Push to talk app in android that allows unicasting,broadcasting and multicasting.Its is implemented using socket programming and UDP datagram.

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Push to-talk-android

  1. 1. Anjali Jain (9910103580) Nitin Bansal (9910103589)
  2. 2. Push-to-talk (PTT), also known as Press-to- Transmit, is a method of having conversations or talking on half-duplex communication lines, including two-way radio, using a momentary button to switch from voice reception mode to transmit mode.
  3. 3. Push to Talk over Cellular (PoC) is a service option for a cellular phone network that enables subscribers to use their phones as walkie-talkies with unlimited range. A typical Push-to-Talk connection connects almost instantly. A significant advantage of PoC / PTT is the ability for a single person to reach an active talk group with a single button press; users need not make several telephone calls to coordinate with a group.
  4. 4. THREE WAYS OF TRANSMISSION ::
  5. 5. INTERFACE FOR USERS :: Screen 1 Settings Communication
  6. 6. WHAT’S NEW?? • Low Noise • Behaves same as telephonic conversation not as Walkie - Talkie
  7. 7. LIMITATION • Within a building that means low range and less distance covered
  8. 8. IMPLEMENTATION:: Sender: UDP Socket programming 1. Create UDP Socket for sending datagram DatagramSocket socket = new DatagramSocket(); 2. Prepare datagram for sending byte[] data = new byte[256]; InetAddress address = InetAddress.getByName("192.168.1.8"); DatagramPacket pack = null; pack = new DatagramPacket(data, data.length, address, 8888); 3. Send socket.send(pack); 4. Receive Prepare new datagram first for holding the incoming packet. The array of byte must be clear in advance. socket.receive(pack);
  9. 9. Receiver: UDP Socket programming 1.Start listening for datagram on a certain socket DatagramSocket socket = new DatagramSocket(Server_Port); 2. Prepare datagram for receiving byte[] data = new byte[256]; DatagramPacket pack = new DatagramPacket(data, data.length); 3. Start listening for a datagram socket.receive(pack); 4. Obtaining the data and address and port of sender int port = pack.getPort(); InetAddress address = pack.getAddress(); String content = new String(pack.getData, 0, pack.getLength());
  10. 10. RESEARCH PAPER 1. A Client-Side Design and Implementation for Push to Talk over Cellular Service http://ir.lib.nctu.edu.tw/bitstream/987654321/32034/1/A+Client- Side+Design+and+Implementation+for+Push+to+Talk+over+Cellular+Se rvice.pdf 2. Practical Voice Communications in Challenged Networks www.netlab.tkk.fi/~jo/papers/2009-08-dt-talkie.pdf
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