This document discusses telecommunication hardware used at the Royal University of Phnom Penh. It describes smartphones, modems, multiplexers, front-end processors, PBX systems, switches, bridges, routers, and gateways. Smartphones combine the functionality of mobile phones, cameras, web browsers, email, MP3 players and other devices. Modems are modulation devices that can be analog or digital. Multiplexers combine multiple data sources into a single output signal. Front-end processors manage communications to and from computer systems. PBX systems serve private branch exchanges within a single organization.

1. Royal University of Phnom Penh
MIS ដដដដដដដដដដដ Mr Kean Tak
ដដដដដដដដដដដ
Slide :32-36
Telecommunication Hardware
1/ Ny Rachakna 6/Ly Limkri
2/Ngin Visal 7/Ly Sotharith
3/Orm SovannTara 8/Meng Chheng
4/My Poleak 9/Ngim Ratana
5/Loy Sakvanna 10/Nhem Ratbophea

2. Telecommunication Hardware
Smartphones
Conmbine the funtionality of a mobile
phone .camera.Web browser. E-mail tool. MP3
player . And other devices
Have their own software oprating systems
Modems
Modulationdulation devices (analog/digital)
Multiplexers
Combine data from multiple data sources into a
single output signal that carries multiple channels

3. How a Modem Works

4. Multiplexer to Consolidate Data
Communications onto a
SingleCommunications Link

5. Front-end processors and PBX
Front-end processors:
special-purpose computers that manage
communications to and from a computer
system
Private branch exchange(PBX):
Telephone switching exchange that
serves a single organization

6. Switches Bridges Router Gateways
Switches : Uses the physical device
address in each incoming message in the
network
Bridge : Connects two LANs together
using the same telecommunications protocol
Router : Forwards data packets across
two or more distinct networks toward their
destions
Gateway : seves as an entrance to
another network

7. ដដដដ
ដដដដ