Algorithm beginning of new talk-time-stamps of rtp packets

Assignment Help Basic Computer Science

Reference no: EM1381493

Assume that the sender sends silence suppressed RTP stream of G.711 audio to receiver (G.711 is name of standard for 64Kbps PCM we discussed in class). During talk spurt 20 msecs chunks of quantized audio samples are encapsulated into packets and sent to receiver (every 20 msecs). Explain your answers for the following:

a. Determine samples that are included in each packet?

b. If RTP time stamp is initialized to zero, and if first talk spurt comprises of three or more packets, determine the RTP time stamps of first three packets in first talk spurt (Hint time stamps are relative to first sample)?

c. Consider last packet in talk spurt and first packet in immediately following talk spurt. Does te difference of RTP timestamps of these packets depend on length of silence period between two talk spurts?

d. If last two packets received at receiver have timestamps of 0 and 480 and corresponding sequence numbers of 1 and 3 (i.e. packet 2 is lost), are these last two packets in same talk spurt or in different talk spurts?

e. Explain the algorithm which uses sequence numbers and time stamps of RTP packets to show the beginning of new talk spurt?

Reference no: EM1381493

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