E-BUSINESS TECHNICAL INFRASTRUCTURE
Telecommunication Model
• Sender unit • Communication channel
• Telecommunication devices • Receiving unit
Client Server Architecture
• Computer networks are generally be organized using clients-server architecture.
• Clients request services from server systems. Servers supply services to clients.
• An access device is used to formulate, transmit, receive and display messages. Front-end ICT
systems would typically be regarded as the servers in a telecommunications network.
• Front-end ICT systems supply the data services and/or products for clients.
• The access channel is used to carry the message between users of access devices -
customers, suppliers, partners and employees - and the organization’s front-end ICT
systems.
• Front-end ICT systems may act as the clients of back-end ICT systems.
Access Channel
Media Type Advantages Disadvantages
Used for telephone service. Widely Transmission speed & distance
Twisted-pair wire
available. limitations.
Cleaner & faster data transmission than More expensive than twisted
Coaxial cable
twisted pair wire. pair wire.
Less distortion of signal; capable of high Expensive to purchase & install.
Fiber optic cable
transmission rates.
Can provide internet service to rural Can be expensive & may
Boardband over power
areas where cable & phone service may interfere with ham radios,
lines
be nonexistence. police & fire communications.
Support mobile users; costs are Signal highly susceptible to
Radio frequency range
dropping. interception.
Must have unobstructed line of
Avoids cost & effort to lay cable or sight between sender &
Microwave-terrestrial &
wires. Capable of high-speed receiver.
satellite frequency range
transmission. Signal highly susceptible to
interception.
Must have unobstructed line of
sight between sender &
Let’s you move, remove & install
Infrared frequency range receiver.
devices without expensive wiring
Transmission effective only for
short distances.
Telecommunication Model
• Sender unit • Communication channel
• Telecommunication devices • Receiving unit
Client Server Architecture
• Computer networks are generally be organized using clients-server architecture.
• Clients request services from server systems. Servers supply services to clients.
• An access device is used to formulate, transmit, receive and display messages. Front-end ICT
systems would typically be regarded as the servers in a telecommunications network.
• Front-end ICT systems supply the data services and/or products for clients.
• The access channel is used to carry the message between users of access devices -
customers, suppliers, partners and employees - and the organization’s front-end ICT
systems.
• Front-end ICT systems may act as the clients of back-end ICT systems.
Access Channel
Media Type Advantages Disadvantages
Used for telephone service. Widely Transmission speed & distance
Twisted-pair wire
available. limitations.
Cleaner & faster data transmission than More expensive than twisted
Coaxial cable
twisted pair wire. pair wire.
Less distortion of signal; capable of high Expensive to purchase & install.
Fiber optic cable
transmission rates.
Can provide internet service to rural Can be expensive & may
Boardband over power
areas where cable & phone service may interfere with ham radios,
lines
be nonexistence. police & fire communications.
Support mobile users; costs are Signal highly susceptible to
Radio frequency range
dropping. interception.
Must have unobstructed line of
Avoids cost & effort to lay cable or sight between sender &
Microwave-terrestrial &
wires. Capable of high-speed receiver.
satellite frequency range
transmission. Signal highly susceptible to
interception.
Must have unobstructed line of
sight between sender &
Let’s you move, remove & install
Infrared frequency range receiver.
devices without expensive wiring
Transmission effective only for
short distances.
