The document discusses different types of cables used for networking, including UTP and STP cables. UTP cable is unshielded twisted pair cable, which is inexpensive but susceptible to interference. STP cable is shielded twisted pair cable, which has greater reliability but also higher cost. The document provides details on the characteristics, applications, advantages and disadvantages of UTP and STP cables.

1. Topic :UTP & STP cable

2. • Subrata Paul
• Roll :13015411
• Semester :1st
• Year :3rd

3. The following factors should be
considered when choosing the type of
cable for your network:
• Size - How many nodes (computers) and what are the total distances
between them?
• Cost - What is the budget and how much can be spent on cabling?
• Reliability - How dependent are your organization’s operations on the
network?
• Speed - How many concurrent users are there be and how critical is
response time?
• Security - How important is it to protect data from possible interception?
• Growth - What are the organization’s plans for growth?
• Administration - How will the network be administered?
• Electrical Interference - What is the physical environment in which the
network will operate?
• Existing Cable - Are there conduits or cabling already in place that might
be useable (e.g., data grade phone lines for UTP)?

4. Twisted Pair
• A type of cable that consists of two independently
insulated wires twisted around one another.
• The use of two wires twisted together helps to
reduce crosstalk and electromagnetic induction.
• Twisted pair looks like telephone wire and consists of
insulated strands of copper wire twisted together.

5. Twisted Pair
• There are two versions of twisted pair cable:
Shielded Twisted Pair (STP)
Unshielded Twisted Pair (UTP).
• STP is commonly used in Token Ring networks
and UTP in Ethernet networks where it is
referred to as "10baseT.“
• Transmission rates vary between 10-100
Mbps..

6. Fig : Twisted Pair

7. Types of Twisted pair

8. UTP
• Short for unshielded twisted pair, a popular type of
cable that consists of two unshielded wires twisted
around each other.
• Due to its low cost, UTP cabling is used extensively
for local-area networks (LANs) and telephone
connections.
• UTP cabling does not offer as high bandwidth or as
good protection from interference as coaxial or fiber
optic cables.
• But it is less expensive and easier to work with.

9. What are the key characteristics of
UTP (unshielded twisted pair)?
• Transmission rate of 10-100 Mbps
• Maximum cable segment of 100 meters
• Most susceptible to electrical interference or
‘crosstalk’ (although shielding may lessen the impact)
• Less expensive than coax or fiber-optic. In some cases,
preinstalled telephone wire may be used in the
network (if it is of sufficient grade).
• Very flexible and easy to work with
• Wire type is 22-26AWG
• Uses an RJ-45 connector
• Ethernet designation is 10baseT

10. STP
• STP short for shielded twisted pair , a type of copper
telephone wiring in which each of the two copper
wires that are twisted together are coated with an
insulating coating that functions as a ground for the
wires.
• The extra covering in shielded twisted pair wiring
protects the transmission line from electromagnetic
interference leaking into or out of the cable.
• STP cabling often is used in Ethernet networks,
especially fast data rate Ethernets.

11. What are the characteristics of
shielded twisted pair (STP)?
• Shielded twisted pair (STP) is similar to UTP
except it contains a copper braid jacket to
‘shield’ the wires from electrical interference.
It can support transmissions over greater
distances than UTP.

13. UTP Categories
• CAT1 is typically telephone wire. This type of wire is
not capable of supporting computer network traffic
and is not twisted.
It is also used by phone companies who provide ISDN,
where the wiring between the customer's site and the
phone company's network uses CAT 1 cable.
• CAT2, CAT3, CAT4, CAT5 and CAT6 are network wire
specifications. This type of wire can support computer
network and telephone traffic.
• CAT2 is used mostly for token ring networks,
supporting speeds up to 4 Mbps. For higher network
speeds (100Mbps plus) you must use CAT5 wire, but for
10Mbps CAT3 will suffice.

14. UTP Categories
• CAT3, CAT4 and CAT5 cable are actually 4 pairs of twisted
copper wires and CAT5 has more twists per inch than CAT3
therefore can run at higher speeds and greater lengths.
• The "twist" effect of each pair in the cables will cause any
interference presented/picked up on one cable to be
cancelled out by the cable's partner which twists around
the initial cable. CAT3 and CAT4 are both used for Token
Ring and have a maximum length of 100 meters.
• CAT6 wire was originally designed to support gigabit
Ethernet (although there are standards that will allow
gigabit transmission over CAT5 wire, that's CAT 5e). It is
similar to CAT5 wire, but contains a physical separator
between the 4 pairs to further reduce electromagnetic
interference.

15. EIA Cable Connectors
• UTP uses a connection called the RJ-45
connector.
• It looks similar to a common telephone
connector (RJ-11) except it is slightly larger.
• The RJ-45 has 8 pins while the RJ-11 has only
4.

16. The following table summarizes the most common types of
Ethernet cables, including their maximum data transmission
speeds and maximum bandwidths.
Category Cable Type
Maximum
Data
Transmission
Speed
Maximum
Bandwidth
Category 3 UTP 10 Mbps 16 MHz
Category 5 UTP 10/100 Mbps 100 MHz
Category 5 e UTP 1000 Mbps 100 MHz
Category 6 UTP or STP 1000 Mbps 250 MHz
Category 6 a STP 10,000 Mbps 500 MHz
Category 7 SSTP 10,000 Mbps 600 MHz

17. UTP
• PROS:
 Most flexible
 cheapest cable (but requires expensive support components)
 easy to install
 easy to add users
 may be able to use existing phone cable if data grade
• CONS:
 Shortest usable cable length
 susceptible to electrical interference
 unsecure
 generally not good for use between buildings

18. Some utp cables price and Company
name
• Lan Cable - High Quality UTPCat6 Cable
• Price per Meter : US $0.25-0.75
• Dongguan Wider Wire & Cable Co., Limited
• OEM Best Price Outdoor Cat6UTP LAN Bulk Cable 305M 4 Pairs
• Price : US $55.1-84
• Shenzhen OXO Network Limited
• Network cable utp cat6 cableprice UTP Cat6a BC 4pr 28awg com...
• Price : US $0.05-0.28
• Shenzhen Mycable Technology Co., Ltd.

19. Some stp cables price and Company
name
• Cat6a/Cat7 STP Patch Cord/Cables
• Price : US $0-5
• Yuyao Simante Network Communication Equipment Co., Ltd.
• High quality good price hot 4 pair Solid utp/stp/ftp/sftp Cat...
• Price : US $14-60
• Shenzhen Z-Crown Technology Ltd.
• Best Price Bare Copper NetworkCable STP Lan Cable Cat6a
• Price : US $1-10
• Dongguan Wider Wire & Cable Co., Limited