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Unit 6: Business Networks and Telecommunications

with guest speakers and experts, multi-school project collaboration, professional activities, and Notes
community events.
Placing a video call is a lot like placing a telephone call. After you connect, you see the other
person in color video on a TV screen and may be able to transfer files or collaborate via options
such as document sharing or white boarding.

Basic Videoconferencing Technology

A videoconferencing system requires the audiovisual equipment, which includes a monitor,
camera, microphone, and speaker, and a means of transmission.
Rather than an Internet-based connection, such as that used by webcams, which have to share
bandwidth with other Internet data, a compressed video system on a dedicated bandwidth
provides smooth audio and video.
The compressed videoconferencing may be transmitted via an ISDN (Integrated Services Digital
Network) line or over IP (Internet Protocol) lines. It is an economical solution for high-quality
videoconferencing.

Did u know? What is compressed video system?

Compressed video system allows a larger audience to experience the benefits of high-
quality videoconferencing at a reasonable cost.

6.2.2 Wireless Payments

Payment system refers to a service to pay the charges using credit card, debit card or mileage
when we purchase service and product on and off lines. The processing procedure of the payment
system is generally divided into customer security, payment at POS, imposition and request of
payment and liquidation between payment service provider and consumer. Most of the payment
systems take similar procedure regardless of its technical method. The small sum payment
system, an early model of payment system, can be said to be the method to purchase products
using wired internet and mobile device.

Figure 6.3: Procedure of Payment System

(9) Exact Calculation (8) Exact Calculation

(2) Reporting to be (3) Certification number
Gumaesa transmission
Mobile a small sum of money
Shopping Mall Portable phone
Payment Company
(1) Purchase request application (5) Certification (4) Certification number
transmission
number input

(6) charging request

mobile communication
User operator
(7) On fare bill next month Gwageum

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