1. What are the different elements in a VoIP architecture? Discuss the role of such elements. 2. What is Sigtran? What is it used for? 3. Describe Voice over IP applications. 4. Is it possible to run a J2ME application on Windows Phone? If not, what is the best way of porting it?

1. How can a Windows Phone handheld connect to other handhelds not loaded with Windows Phone? 2.        Explain each of the following. (a)     Session Announcement Protocol (b)     Session Description Protocol (c)     H.248 (d)     SCTP (e)     SIP to SIP call flow (f)      SIP to PSTN call flow (g)     PTN to IP call flow (h)     Mobile VoIP

What is meant by the term multimedia? How is multimedia different from simple media types? What are the benefits of using multimedia? What are the application areas of multimedia? What media types compose multimedia? Explain each of them.

1. Explain the role of compression and decompression with respect to multimedia. 2. Explain different types of compression with differences between each of them with examples. 3. Explain the difference between temporal and spatial compression. 4. What is a codec? Explain its role in multimedia.

List some important codecs each in audio, video and open source categories. Elaborate on video codecs. Explain the RGB color space. Write a brief note on JPEG. Write a brief note on MPEG. Write a brief note on MP3. Write a brief note on H.261.

1. What are various types of networked multimedia applications? Explain the differences between them with examples. 2. What are the issues in multimedia delivery over the Internet? How are they tackled? 3. Write a brief note on RTSP. 4. Write a brief note on H.323.

Write a brief note on RSVP. What is CDN ? Why is it necessary? Also, explain its applications. What are the principles of best effort delivery over the Internet? Write a brief note on Intserv. Write a brief note on Diffserv. Explain the difference between Interv and Diffserv.

1. What is IMS? Explain its evolution. 2. How is IMS different from GSM, GPRS, CDMA, etc.? 3. Write a short note on the history of IMS. 4. Why is IMS necessary in the present world where convergence is happening at a rapid pace? 5. What are the motivations of using IMS? 6. Describe the

1. What is WATM? How does it improve over ATM? 2. What are multimedia broadcast services? How is it essential nowadays? 3. What is Multiple Play? Explain its types and applications. 4. Explain HSPA family of protocols and applications. How would they change the applications of existing networks?

1. Write short notes on. (a) HSPA (b) HSDPA (c) HSUPA (d) HSOPA (e) Evolved HSPA (f) DVB (g) DAB (h) IPTV (i) Internet TV (j) Triple Play (k) Quadruple Play (l) 3GPP LTE (m) iBurst (n) WiBro 2. How is orthogonality helpful in OFDM? 3. Explain how SLF is useful. 4. Write a brief