I cannnot understand the question on computer network . Can anyone help me? Cons

Question

I cannnot understand the question on computer network. Can anyone help me?

Consider a voice-over-IP system that transmits 64K bits/s PCM voice using RTP/UDP/IP with a packetization interval of 20ms. How many such streams can be transmitted over a 10Mbps Ethernet link assuming the link can be loaded up to 80%? What is the maximum number of streams if packetization interval of 10ms was used? If these streams with a packetization interval of 20ms were transmitted to a mobile user using Mobile IP, what is the maximum number of streams over the same link when using a) IP in IP encapsulation, b) minimum encapsulation, and c) GRE encapsulation? Assume no options are enabled.

Explanation / Answer

Here the Question is about the VOIP (i.e., Voice Over Internet Protocol) system in which the rate of transmission is 64Kbits/s PCM (Pulse Code Modulation) is done with a packetization interval of 20 ms that means every packet is transmitted at an interval of 20 ms each packet.

80 % here indicates that the efficiency in data transmission on a 10 Mbps Line the means at a rate of 8 Mbps

In 64 Kbits/sec 80% means 51.2 Kbits/s are transmitted

The Second question requires the packetization of same 20ms were transmitted using Mobile IP (MIP) and we have

to calculate the streams over same link when using with

a) IP in IP Encapsulation concept

When the same Mobile IP is been used for transmission over Mobile IP

b) what is the Minimum encapsulation required for transmission over Mobile IP

when the same Mobile IP has been transmission channel

c) GRE encapsulation should also be implemented assuming that no option points are enabled.

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