cable not working!!!

[Ahmed Samir]

hi there

i needed this small ethernet cable segment-20meters-, and i remembered that
a friend told me that i can use normal telephone wire -four pairs- instead
of the UTP cat.5 one

now i made the cable and put the connectors in it -RJ45- but it wont work,
there is an LED that lights when cable is connected between the ethernet
card and the ethernet hub ,but the LEDs wont light, although i tested the
continuity of the 8 wires of the cable many times.


does anyone has an explaination???


thanks

 

[Jan-Erik Söderholm]

What has happend to your SHIFT key ??
Jan-Erik.

Ahmed Samir wrote:

hi there

i needed this small ethernet cable segment-20meters-, and i remembered that
a friend told me that i can use normal telephone wire -four pairs- instead
of the UTP cat.5 one

now i made the cable and put the connectors in it -RJ45- but it wont work,
there is an LED that lights when cable is connected between the ethernet
card and the ethernet hub ,but the LEDs wont light, although i tested the
continuity of the 8 wires of the cable many times.

does anyone has an explaination???

thanks

 

[Ahmed Samir]

it's fine, how about urs??
"Jan-Erik Söderholm" <aaa@aaa.com> wrote in message
news:3F51CBE4.7581907F@aaa.com...

What has happend to your SHIFT key ??
Jan-Erik.

Ahmed Samir wrote:

hi there

i needed this small ethernet cable segment-20meters-, and i remembered
that
a friend told me that i can use normal telephone wire -four pairs-
instead
of the UTP cat.5 one

now i made the cable and put the connectors in it -RJ45- but it wont
work,
there is an LED that lights when cable is connected between the ethernet
card and the ethernet hub ,but the LEDs wont light, although i tested
the
continuity of the 8 wires of the cable many times.

does anyone has an explaination???

thanks

 

[the Wiz]

"Ahmed Samir" <ahmdsamir@link.net> wrote:

hi there

i needed this small ethernet cable segment-20meters-, and i remembered that
a friend told me that i can use normal telephone wire -four pairs- instead
of the UTP cat.5 one

now i made the cable and put the connectors in it -RJ45- but it wont work,
there is an LED that lights when cable is connected between the ethernet
card and the ethernet hub ,but the LEDs wont light, although i tested the
continuity of the 8 wires of the cable many times.


does anyone has an explaination???


thanks

Is your network equipment 10MHz or 100MHz?

10MHz connections will work over Cat3 wiring, but 100MHz is iffy, even at short
distances.

Does your wiring match this diagram? Holding the connector with the latch down:
http://www.tcnj.edu/~nts/network/rj45_info.php

More about me: http://thelabwiz.home.mindspring.com/
VB3 source code: http://thelabwiz.home.mindspring.com/vbsource.html
VB6 source code: http://thelabwiz.home.mindspring.com/vb6source.html
VB6 - MySQL how to: http://thelabwiz.home.mindspring.com/mysql.html
My newest language - NSBasic for the Palm PDA: http://thelabwiz.home.mindspring.com/nsbsource.html
Drivers for Pablo graphics tablet and JamCam cameras: http://home.earthlink.net/~mwbt/
johnecarter atat mindspring dotdot com. Fix the obvious to reply by email.

 

[Ahmed Samir]

it's 100MHz ethernet


"the Wiz" <look@message.body> wrote in message
news:cfc4lvcuet3bc1armnj0f7rnbcsjpkuk79@4ax.com...

"Ahmed Samir" <ahmdsamir@link.net> wrote:

hi there

i needed this small ethernet cable segment-20meters-, and i remembered
that
a friend told me that i can use normal telephone wire -four pairs-
instead
of the UTP cat.5 one

now i made the cable and put the connectors in it -RJ45- but it wont
work,
there is an LED that lights when cable is connected between the ethernet
card and the ethernet hub ,but the LEDs wont light, although i tested the
continuity of the 8 wires of the cable many times.


does anyone has an explaination???


thanks


Is your network equipment 10MHz or 100MHz?

10MHz connections will work over Cat3 wiring, but 100MHz is iffy, even at
short
distances.

Does your wiring match this diagram? Holding the connector with the latch
down:
http://www.tcnj.edu/~nts/network/rj45_info.php

More about me: http://thelabwiz.home.mindspring.com/
VB3 source code: http://thelabwiz.home.mindspring.com/vbsource.html
VB6 source code: http://thelabwiz.home.mindspring.com/vb6source.html
VB6 - MySQL how to: http://thelabwiz.home.mindspring.com/mysql.html
My newest language - NSBasic for the Palm PDA:
http://thelabwiz.home.mindspring.com/nsbsource.html
Drivers for Pablo graphics tablet and JamCam cameras:
http://home.earthlink.net/~mwbt/
johnecarter atat mindspring dotdot com. Fix the obvious to reply by email.

 

[Lord Garth]

"Ahmed Samir" <ahmdsamir@link.net> wrote in message
news:biud3v$d3qbm$1@ID-36824.news.uni-berlin.de...

it's 100MHz ethernet


"the Wiz" <look@message.body> wrote in message
news:cfc4lvcuet3bc1armnj0f7rnbcsjpkuk79@4ax.com...
"Ahmed Samir" <ahmdsamir@link.net> wrote:

hi there

i needed this small ethernet cable segment-20meters-, and i remembered
that
a friend told me that i can use normal telephone wire -four pairs-
instead
of the UTP cat.5 one

now i made the cable and put the connectors in it -RJ45- but it wont
work,
there is an LED that lights when cable is connected between the
ethernet
card and the ethernet hub ,but the LEDs wont light, although i tested
the
continuity of the 8 wires of the cable many times.


does anyone has an explaination???


thanks


Is your network equipment 10MHz or 100MHz?

10MHz connections will work over Cat3 wiring, but 100MHz is iffy, even
at
short
distances.

Does your wiring match this diagram? Holding the connector with the
latch
down:
http://www.tcnj.edu/~nts/network/rj45_info.php

More about me: http://thelabwiz.home.mindspring.com/
VB3 source code: http://thelabwiz.home.mindspring.com/vbsource.html
VB6 source code: http://thelabwiz.home.mindspring.com/vb6source.html
VB6 - MySQL how to: http://thelabwiz.home.mindspring.com/mysql.html
My newest language - NSBasic for the Palm PDA:
http://thelabwiz.home.mindspring.com/nsbsource.html
Drivers for Pablo graphics tablet and JamCam cameras:
http://home.earthlink.net/~mwbt/
johnecarter atat mindspring dotdot com. Fix the obvious to reply by
email.

You'll require CAT5e cable AND you need to wire the pairs as shown for 568B.
If you don't, operation at 100Mb/s is not likely. If you are wiring two
computer
together without a hub or switch, you'll need to wire a crossover cable.
This is
where pins 1& 2 interchange with pins 3 & 6 at the other end and vice versa.

 

[Ahmed Samir]

why do pairs have to be in this order, isnt it just pin to pin connection
between the hub and the ethernet card?

"Lord Garth" <LGarth@tantalus.com> wrote in message
news:qdz4b.89$G73.64@newssvr23.news.prodigy.com...

"Ahmed Samir" <ahmdsamir@link.net> wrote in message
news:biud3v$d3qbm$1@ID-36824.news.uni-berlin.de...
it's 100MHz ethernet


"the Wiz" <look@message.body> wrote in message
news:cfc4lvcuet3bc1armnj0f7rnbcsjpkuk79@4ax.com...
"Ahmed Samir" <ahmdsamir@link.net> wrote:

hi there

i needed this small ethernet cable segment-20meters-, and i
remembered
that
a friend told me that i can use normal telephone wire -four pairs-
instead
of the UTP cat.5 one

now i made the cable and put the connectors in it -RJ45- but it wont
work,
there is an LED that lights when cable is connected between the
ethernet
card and the ethernet hub ,but the LEDs wont light, although i tested
the
continuity of the 8 wires of the cable many times.


does anyone has an explaination???


thanks


Is your network equipment 10MHz or 100MHz?

10MHz connections will work over Cat3 wiring, but 100MHz is iffy, even
at
short
distances.

Does your wiring match this diagram? Holding the connector with the
latch
down:
http://www.tcnj.edu/~nts/network/rj45_info.php

More about me: http://thelabwiz.home.mindspring.com/
VB3 source code: http://thelabwiz.home.mindspring.com/vbsource.html
VB6 source code: http://thelabwiz.home.mindspring.com/vb6source.html
VB6 - MySQL how to: http://thelabwiz.home.mindspring.com/mysql.html
My newest language - NSBasic for the Palm PDA:
http://thelabwiz.home.mindspring.com/nsbsource.html
Drivers for Pablo graphics tablet and JamCam cameras:
http://home.earthlink.net/~mwbt/
johnecarter atat mindspring dotdot com. Fix the obvious to reply by
email.


You'll require CAT5e cable AND you need to wire the pairs as shown for
568B.
If you don't, operation at 100Mb/s is not likely. If you are wiring two
computer
together without a hub or switch, you'll need to wire a crossover cable.
This is
where pins 1& 2 interchange with pins 3 & 6 at the other end and vice
versa.

 

[Lord Garth]

"Ahmed Samir" <ahmdsamir@link.net> wrote in message
news:bivabi$d9vtt$1@ID-36824.news.uni-berlin.de...

why do pairs have to be in this order, isnt it just pin to pin connection
between the hub and the ethernet card?

You'll require CAT5e cable AND you need to wire the pairs as shown for
568B.
If you don't, operation at 100Mb/s is not likely. If you are wiring two
computer
together without a hub or switch, you'll need to wire a crossover cable.
This is
where pins 1& 2 interchange with pins 3 & 6 at the other end and vice
versa.

The signals are differential and must be paired. There is no reference to
ground, there is TX+ followed by TX- etc. The input can not reject common
mode noise if the wires are not a twisted pair. Remember that you are not
dealing with DC here!

There are only 4 wires needed, specifically pins 1 & 2 which is one pair and
pins 3 & 6 which is the second pair. You would find it hard to build if you
didn't use all 8 wires. CAT5e wire has specific characteristics that are
required for 100Mb/s operation. One specification of CAT5e is the number
of twists per foot.

Don't send a phone line down your network cable. You will break the
specs for 100Mb/s networks. There are specific connectors used for the
sockets, they are NOT the same as a telephone socket (RJ-45). The allowable
length of wire that can be untwisted is strictly called out. Look up
NEXT or Near End CrossTalk.

These things are not hard to build, just build them right and they will
serve you long and well.

 

[Watson A.Name - "Watt Sun]

In article <bish8a$c7h3c$1@ID-36824.news.uni-berlin.de>,
ahmdsamir@link.net mentioned...

hi there

i needed this small ethernet cable segment-20meters-, and i remembered that
a friend told me that i can use normal telephone wire -four pairs- instead
of the UTP cat.5 one

now i made the cable and put the connectors in it -RJ45- but it wont work,
there is an LED that lights when cable is connected between the ethernet
card and the ethernet hub ,but the LEDs wont light, although i tested the
continuity of the 8 wires of the cable many times.

You didn't conect the wires correctly. Do it right and use Cat5, and
don't forget that if you are connecting two computers, you have to use
a crossover. Also, take your questions to the appropriate newsgroup
comp.dcom.cabling.

does anyone has an explaination???
thanks

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