Pace IT - Types of Internet Connections

Types of Internet connections.

Instructor, PACE-IT Program – Edmonds Community College

Areas of Expertise Industry Certifications

PC Hardware

Network Administration

IT Project Management

Network Design

User Training

IT Troubleshooting

Qualifications Summary

Education

M.B.A., IT Management, Western Governor’s University

B.S., IT Security, Western Governor’s University

Entrepreneur, executive leader, and proven manger

with 10+ years of experience turning complex issues

into efficient and effective solutions.

Strengths include developing and mentoring diverse

workforces, improving processes, analyzing

business needs and creating the solutions

required— with a focus on technology.

PACE-IT.

– Dial-up Internet connections.

– DSL Internet connections.

– Other Internet connections.


– Dial-up.» Utilizes plain old telephone service (POTS) though the public

switched telephone network (PSTN).

» Requires the use of a modem to transmit data as an analog

signal over the twisted pair POTS line.

» Max theoretical speed is 56 Kbps.

– Integrated Services Digital Network (ISDN).» Digital point-to-point dial-up WAN technology using the PSTN.

» Up to approximately 2 Mbps on a Primary Rate Interface (PRI).

• PRI uses 23 B channels and one D channel.

» Commonly uses Basic Rate Interface (BRI) for 128 Kbps.

• BRI uses two B channels at 64 Kbps (one for data and one for

voice) and one D channel at 16 Kbps for call setup and link

management.

» Requires the use of a terminal adapter (TA) for the connection to

the end node (looks like a modem but it is not a modem).

» More expensive than POTS and not as capable as DSL, but can

be used when DSL is not available.


– Digital Subscriber Line (DSL).» Digital Internet connection using POTS as the media.

» Creates a dedicated digital line between the end point and the

network supplied by the Internet Service Provider (ISP).

• It is an always on connection to the Internet.

» Carries voice and data (filters are put in place to get voice).

» Speeds vary, depending on the ISP and the type of DSL

service.

• ISPs charge for the bandwidth provided.

– Asynchronous DSL (ADSL).» Download speeds are faster than upload speeds.

» Usually more cost effective for the SOHO environment than

SDSL.

– Synchronous DSL (SDSL).» Download and upload speeds are the same.

» Often used in conjunction with a leased T1 line.

» As a rule, it costs more than ADSL.


– Cable Internet connections.» Broadband connection to the location delivered by the cable

company using its cabled network.

• Typically offers more bandwidth for less cost than DSL.

• It is also an always on connection to the Internet.

» Headend: all cable signals received at this point; signals are

processed and formatted then transmitted to the distribution

network.

» Distribution network: smaller service areas served by the cable

ISP. The distribution network architecture can be composed of

fiber optic cabling, coaxial cabling, and/or hybrid fiber-coaxial

cabling (HFC).

» Final distribution to the location is usually through a coaxial

cable.

» Unlike DSL, the bandwidth is shared by the distribution

network; this can lead to increased latency and congestion

during peak usage times.

Fiber optic Internet connections—using light to transmit data and voice at a higher bandwidth.

Fiber optic cables are used to make the connection to

the ISP’s network. This allows for higher bandwidth,

which means the end user is granted more and faster

Internet access. Quite often, fiber optic connections will

carry the Internet and telephone connections as well

as television service—and they do so with ease.

However, it tends to be the most expensive option.

Like DSL and cable, this is an always on type of

connection.


Dial-up Internet connections use POTS over the PSTN in order to achieve a

connection to the Internet. A modem is used to translate the digital signal

into an analog format for transmission. ISDN is a digital dial-up WAN

technology that provides a connection to the Internet. The most common

implementation is utilizing a BRI connection. ISDN is faster than traditional

dial up, but not as cost effective or capable as DSL.

Topic

Dial-up Internet connections.

Summary

DSL provides a digital always on connection to the Internet. DSL carries

data and voice over the PSTN with varying speeds. If DSL upload and

download speeds are the same, it is SDSL; if the speeds are different, then

it is ADSL.

DSL Internet connections.

Cable is an always on broadband connection to the Internet. Typically,

cable can offer more bandwidth for less cost than DSL. The bandwidth is

shared in the distribution network, which can affect performance. Fiber optic

Internet connections offer a high bandwidth always on connection. In most

cases, a fiber optic connection will be the most expensive of all connection

types.

Other Internet connections.


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This workforce solution was 100 percent funded by a $3 million grant awarded by the

U.S. Department of Labor's Employment and Training Administration. The solution was

created by the grantee and does not necessarily reflect the official position of the U.S.

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or ownership. Funded by the Department of Labor, Employment and Training

Administration, Grant #TC-23745-12-60-A-53.

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impaired, a video phone is available at the Services for Students with Disabilities (SSD)

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Pace IT - Types of Internet Connections

Education

Transcript of Pace IT - Types of Internet Connections