Question

Explain and discuss H.323, QoS, and RTP. How does each of these differs and what are their functions?

In your own words, explain and discuss the SIP architecture. What are its components? How does SIP work? Are there advantages and disadvantages to using SIP?

Answer 1

Answer:

H.323 provides a standard of equipments and computers for transmission communications in many network-based packets and specifies the terms and use of video audio transmission and real-time system of various protocols and objects that allow transmission it is a one of the oldest standards that is used for telecommunication and conferencing.it is a system of various types of protocols and components that permits or allow transferring the media information over packet based networks. interoperability is one of the foremost edges of H.323 standard.

Quality of Service could be a assortment of technologies that job on a network to make sure its ability to reliably run high-priority applications and traffic beneath restricted network capability. QoS can accomplish this by providing differentiated handling and capability allocation to specific flows in network traffic. this permits the network administrator to assign the order inside that packets area unit handled, and additionally the quantity of information measure afforded to that application or traffic flow. measurements of concern to QoS are bandwidth ,throughput ,latency ,delay, jitter and error rate.

RTP provides end to end network transport functions appropriate for applications transmission real time information like: audio, video or simulation information, over multicast and unicast network services. rtp does not address resource reservation for a real time services. the information transport is increased by a control protocol to allow watching of the knowledge delivery in an extremely manner scalable to massive multicast networks, and to provide smallest management and identification practicality. rtp  are designed to be independent of the underlying transport and network layers. the rtp protocol allow the use of rtp level mixers and translators.

RTP is that the end-to-end streaming in real-time of media-related information. rtp includes mechanisms for jitter compensation packet loss detection additionally as out-of-order information packet delivery, problems that are particularly common in UDP (User Datagram Protocol) transmissions over ip

The Session Initiation Protocol could be a communication protocol used for initiating maintaining and terminating time period session that embody voice video and electronic messaging applications.ip works collaboratively with the selection of various protocols and specialized servers to provide communication between participants. when using sip user agent is in a position to view all issues and ease of use of individual users software or device programming capabilities to use and therefore provides the functions necessary to line up or manage and destroy sessions between participants.

The protocol defines the actual format of the modified messages and in addition the participant communication sequence.isip can be a text-based protocol that includes several Hypertext text Transfer Protocol so smtp decision based on sip can include many media streams but no streams alternative required for applications like text electronic messaging that exchange information as payload inside the sip message.

SIP might be a communication protocol that handles the setup modification, and tear down of multimedia sessions. sip is used to clarify the session characteristics to potential session participants. though to be precise sip is written such the media to be utilised in a very given session might use any transport protocol the media can ordinarily be exchanged using the real time transport protocol as the transport protocol.

It is seemingly that sip messages can taste variety of the identical physical facilities as a result of the media to be changed. sip communication ought to be considered individually from the media itself however. the logical separation between communication and session information. This separation is important as a result of the communication could pass via one or a lot of proxy or send servers whereas the media stream itself takes a additional direct path. This approach are going to be thought-about somewhat analogous to the separation of communication and media already represented for H.323.

advantages: sip provides strategies of sharing the location and accessibility of users and explains the capabilities of the software system or device being used.
we can use sip to setup modify and terminate a affiliation between 2 or additional computers.
sip supports extra functions, like call waiting, call transfer and conference calling by sending out the mandatory signals to enable and disable these function.

disadvantages: sip is outdated not much secure as other new architectures also when using sip Messages and calls puts pressure on your bandwidth.