Question

Activity 1: Answer the following. 1. What are the benefits of VoIP? 2. How the voice is digitized and packetized? 3. What is conversation traffic and control traffic? 4. What are the components of IP Telephony system? 5. Brief on voice compression and coding techniques.

Answer 1

1. What are the benefits of VoIP?

VoIP - Voice over IP

  There are many benefits of using VoIP.Some of them are Low Cost,Service Mobility,Efficient Client Interaction,Effective & simple Comference Calls,Versatility of Features .

2. How the voice is digitized and packetized?

It is the simple process to understand that voice is analog signal and this analog signal will be coverted in to digital signal as binary expression . According to the Nyquist theorem there are certain constraints like human speach rage , human earing range so respect to this constraints the digitalized data will be transfer to the respective destination as a packets each packets has the user information encoded and details of the pocket then all the pockets will be collected the destination using those details in pockets.

3. What is conversation traffic and control traffic?

Conversation traffic the traffic between the two IP that is when A is already connected a call b and then when C trys to call either of them it makes the traffic i.e., conversation traffic

When we control those traffic by a technique is called control traffic like the user is busy call sometimes later.

4. What are the components of IP Telephony system?

The components of IP Telephony systems are

IP PBX - it services forward calls

Gatekeeper - Routes the calls

Gateways - Connectimg calls to other telephone system

   Multi-Conference Unit - It manages conference calls

IP Softphone - it is a software that turns your system in virtual telephone