Essay On Multimedia Communication

745 Words3 Pages
1.Introduction: Multimedia communication is an effective way of communicating through mixed media such as visual, audio and text. Information Technology and communications go hand in hand, as they are interdependent on each other. Multimedia communication has transferred into an effective and complex function from 1970 until date. Multimedia communications includes services mentioned below: File Transfers - High-Density, Graphics, Audio Files, and Video Files. Communication - Audio, Streaming Audio, Computer-based telephony, Computer based Audio conferencing, Video conferencing, and streaming video. Multimedia communication supports a range of file formats such as: Text Files - .txt (Text), .doc (Microsoft word document), .rtf (Rich text format) Audio Files - .au(audio format), .aif(audio interchange file), .wav(waveform) Graphic Files - .jpg, .gif(graphic interchange format), .tif(tagged image), .bmp(bitmap),.pict, .pcx Moving video files: .qt(quick time), .mov, .avi Animation - .fli, .flc. There are different modes of Multimedia communications such as person to person and person to system. This communication is bidirectional, as all the entities interact with each other. Person to Person : Bidirectional communication mode where two ends of the communications is done by peer using multimedia systems. Examples : Video conference ,Telephone conversations, Multimedia message services , Distance learning Person to Machine : One end of this communications is a machine which respond to the request for multimedia information or service by a person Examples : Video conference ,Telephone conversations, Multimedia message services , Distance learning Multimedia Communications over Internet: The multimedia communicatio... ... middle of paper ... ...ow they can relinquish them once the communication is ended.To make a resource reservation the Resource Reservation Protocol communicates with two local decision modules -Admission Control : Admission control checks whether the node has available resources that can meet the requirements -Policy Control : Policy control determines whether the user has the permission to reserve the resource. If the admission control check and the policy control check fails the Resource Reservation Protocol gives an error notification to the process which initiated the request. If both the admission has no error notifications, the RSVP sets packet classifier and packet scheduler parameters . - Packet classifier determines the Quality of Service class for each packet. -Packet scheduler check the order of packet transmission to achieve the Quality of Service for multimedia streaming.
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