Mixing
CAT5 for telephony
Clash Royale CLAN TAG#URR8PPP
up vote
3
down vote
favorite
I wish to extend my incoming telephone connection using CAT5 as I've heard it could provide better performance than standard single stranded telephone wire over long distances.
There are only two wires in the phone wire, do I just connect these to any two wires in the CAT 5 cable, or do I need to treat the twisted pairs in the CAT5 as a single wire - ie connect both blue+striped blue to one wire, and green+striped green to the other wire.
In short, to get the best out of the CAT5 cable do I need to take the twisted pairs into account, if so how?
ethernet wiring telephone twisted-pair
asked 2 hours ago
userSteve
1161
New contributor
userSteve is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |Â
up vote
3
down vote
favorite
I wish to extend my incoming telephone connection using CAT5 as I've heard it could provide better performance than standard single stranded telephone wire over long distances.
There are only two wires in the phone wire, do I just connect these to any two wires in the CAT 5 cable, or do I need to treat the twisted pairs in the CAT5 as a single wire - ie connect both blue+striped blue to one wire, and green+striped green to the other wire.
In short, to get the best out of the CAT5 cable do I need to take the twisted pairs into account, if so how?
ethernet wiring telephone twisted-pair
asked 2 hours ago
userSteve
1161
New contributor
userSteve is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
3
The telephone company runs the connection to your house over many miles of cable with substantially lower grade than CAT5. As long as your existing indoor wiring isn't any worse, switching those last few feet inside your house to CAT5 isn't going to make any difference.
– brhans
2 hours ago
1
@brhans Makes me think of gold plated fuses and very expensive mains cables for audiophiles.
– winny
1 hour ago
1
the incoming phone line is a twisted pair .... just keep the twisted pair going all the way to your phone ..... do not connect separate untwisted wires
– jsotola
28 mins ago
add a comment |Â
up vote
3
down vote
favorite
up vote
3
down vote
favorite
I wish to extend my incoming telephone connection using CAT5 as I've heard it could provide better performance than standard single stranded telephone wire over long distances.
There are only two wires in the phone wire, do I just connect these to any two wires in the CAT 5 cable, or do I need to treat the twisted pairs in the CAT5 as a single wire - ie connect both blue+striped blue to one wire, and green+striped green to the other wire.
In short, to get the best out of the CAT5 cable do I need to take the twisted pairs into account, if so how?
ethernet wiring telephone twisted-pair
asked 2 hours ago
userSteve
1161
New contributor
userSteve is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I wish to extend my incoming telephone connection using CAT5 as I've heard it could provide better performance than standard single stranded telephone wire over long distances.
There are only two wires in the phone wire, do I just connect these to any two wires in the CAT 5 cable, or do I need to treat the twisted pairs in the CAT5 as a single wire - ie connect both blue+striped blue to one wire, and green+striped green to the other wire.
In short, to get the best out of the CAT5 cable do I need to take the twisted pairs into account, if so how?
ethernet wiring telephone twisted-pair
ethernet wiring telephone twisted-pair
asked 2 hours ago
userSteve
1161
New contributor
userSteve is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 hours ago
userSteve
1161
New contributor
userSteve is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 hours ago
userSteve
1161
New contributor
userSteve is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 hours ago
userSteve
1161
asked 2 hours ago
userSteve
1161
1161
New contributor
userSteve is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
userSteve is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
userSteve is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
3
The telephone company runs the connection to your house over many miles of cable with substantially lower grade than CAT5. As long as your existing indoor wiring isn't any worse, switching those last few feet inside your house to CAT5 isn't going to make any difference.
– brhans
2 hours ago
1
@brhans Makes me think of gold plated fuses and very expensive mains cables for audiophiles.
– winny
1 hour ago
1
the incoming phone line is a twisted pair .... just keep the twisted pair going all the way to your phone ..... do not connect separate untwisted wires
– jsotola
28 mins ago
add a comment |Â
3
The telephone company runs the connection to your house over many miles of cable with substantially lower grade than CAT5. As long as your existing indoor wiring isn't any worse, switching those last few feet inside your house to CAT5 isn't going to make any difference.
– brhans
2 hours ago
1
@brhans Makes me think of gold plated fuses and very expensive mains cables for audiophiles.
– winny
1 hour ago
1
the incoming phone line is a twisted pair .... just keep the twisted pair going all the way to your phone ..... do not connect separate untwisted wires
– jsotola
28 mins ago
3
3
The telephone company runs the connection to your house over many miles of cable with substantially lower grade than CAT5. As long as your existing indoor wiring isn't any worse, switching those last few feet inside your house to CAT5 isn't going to make any difference.
– brhans
2 hours ago
The telephone company runs the connection to your house over many miles of cable with substantially lower grade than CAT5. As long as your existing indoor wiring isn't any worse, switching those last few feet inside your house to CAT5 isn't going to make any difference.
– brhans
2 hours ago
1
1
@brhans Makes me think of gold plated fuses and very expensive mains cables for audiophiles.
– winny
1 hour ago
@brhans Makes me think of gold plated fuses and very expensive mains cables for audiophiles.
– winny
1 hour ago
1
1
the incoming phone line is a twisted pair .... just keep the twisted pair going all the way to your phone ..... do not connect separate untwisted wires
– jsotola
28 mins ago
the incoming phone line is a twisted pair .... just keep the twisted pair going all the way to your phone ..... do not connect separate untwisted wires
– jsotola
28 mins ago
add a comment |Â
4 Answers
4
active
oldest
votes
up vote
3
down vote
In the US (and pretty much everywhere else, though I won't claim to know how things are done in very rural or poor countries), the telephone cable plant (the run from your home to the central office) is twisted pair, not "single stranded". It's just not as tightly controlled in spec as Cat 5.
You need to connect the two wires of the incoming pair to the two wires of a pair in your cable.
The incoming cable probably has two pairs to allow you to have two phone lines in your home. In this case, you should probably connect both pairs to your incoming wiring to avoid confusing a future installer when somebody wants to add a second line (not that that is super likely in the cell phone age).
As other answers have mentioned, 10 or 100 Mbps Ethernet leaves two free pairs in a cat 5 cable, specifically to allow for connecting voice circuits.
answered 1 hour ago
The Photon
80.3k394190
add a comment |Â
up vote
2
down vote
CAT5 cable has four separate twisted pairs. Use the two wires in one of those pairs for your telephone connection.
10/100 base T Ethernet uses the green and orange pairs, specifically so that you can still use the blue and brown pairs for telephones.
answered 2 hours ago
Dave Tweed♦
111k9132240
Just to be clear, are you saying use only two wires (from the same pair), to connect to the two telephone wires, or are you saying use two pairs (eg the blue pair and the brown pair).
– userSteve
2 hours ago
I really don't know how to say "the two wires in one of those pairs" any more clearly. Do NOT use two pairs. (You could have one phone connected to the blue pair, and a separate telephone connected to the brown pair, however.)
– Dave Tweed♦
1 hour ago
add a comment |Â
up vote
0
down vote
A CAT5 cable has 4 twisted pairs. You will want to use 1 pair of wires per phone line. The standard arrangement is the blue pair is the first phone line.
Assuming the wiring your connecting to is the standard Green/Red/Yellow/Black used in the US, and that it's connected correctly, connect the existing Red wire to the Blue with White wire, and Green to the White with Blue.
answered 2 hours ago
longneck
1536
add a comment |Â
up vote
0
down vote
The twist in twisted pair helps reduce EMI and crosstalk for differential signals on that pair. If you use both wires in a pair as a single parallel line you lose the benefit of the twist and defeat your own purpose. (e.g Blue&Blue/White tied to red, Brown&Brown/White tied to green).
Use Blue and Blue/White as line one. Brown and Brown/White as line two.
You can still run 10/100 ethernet or two other lines over the orange and green pairs.
answered 1 hour ago
Phil C
9361117
add a comment |Â
4 Answers
4
active
oldest
votes
4 Answers
4
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
3
down vote
In the US (and pretty much everywhere else, though I won't claim to know how things are done in very rural or poor countries), the telephone cable plant (the run from your home to the central office) is twisted pair, not "single stranded". It's just not as tightly controlled in spec as Cat 5.
You need to connect the two wires of the incoming pair to the two wires of a pair in your cable.
The incoming cable probably has two pairs to allow you to have two phone lines in your home. In this case, you should probably connect both pairs to your incoming wiring to avoid confusing a future installer when somebody wants to add a second line (not that that is super likely in the cell phone age).
As other answers have mentioned, 10 or 100 Mbps Ethernet leaves two free pairs in a cat 5 cable, specifically to allow for connecting voice circuits.
answered 1 hour ago
The Photon
80.3k394190
add a comment |Â
up vote
3
down vote
In the US (and pretty much everywhere else, though I won't claim to know how things are done in very rural or poor countries), the telephone cable plant (the run from your home to the central office) is twisted pair, not "single stranded". It's just not as tightly controlled in spec as Cat 5.
You need to connect the two wires of the incoming pair to the two wires of a pair in your cable.
The incoming cable probably has two pairs to allow you to have two phone lines in your home. In this case, you should probably connect both pairs to your incoming wiring to avoid confusing a future installer when somebody wants to add a second line (not that that is super likely in the cell phone age).
As other answers have mentioned, 10 or 100 Mbps Ethernet leaves two free pairs in a cat 5 cable, specifically to allow for connecting voice circuits.
answered 1 hour ago
The Photon
80.3k394190
add a comment |Â
up vote
3
down vote
up vote
3
down vote
In the US (and pretty much everywhere else, though I won't claim to know how things are done in very rural or poor countries), the telephone cable plant (the run from your home to the central office) is twisted pair, not "single stranded". It's just not as tightly controlled in spec as Cat 5.
You need to connect the two wires of the incoming pair to the two wires of a pair in your cable.
The incoming cable probably has two pairs to allow you to have two phone lines in your home. In this case, you should probably connect both pairs to your incoming wiring to avoid confusing a future installer when somebody wants to add a second line (not that that is super likely in the cell phone age).
As other answers have mentioned, 10 or 100 Mbps Ethernet leaves two free pairs in a cat 5 cable, specifically to allow for connecting voice circuits.
answered 1 hour ago
The Photon
80.3k394190
In the US (and pretty much everywhere else, though I won't claim to know how things are done in very rural or poor countries), the telephone cable plant (the run from your home to the central office) is twisted pair, not "single stranded". It's just not as tightly controlled in spec as Cat 5.
You need to connect the two wires of the incoming pair to the two wires of a pair in your cable.
The incoming cable probably has two pairs to allow you to have two phone lines in your home. In this case, you should probably connect both pairs to your incoming wiring to avoid confusing a future installer when somebody wants to add a second line (not that that is super likely in the cell phone age).
As other answers have mentioned, 10 or 100 Mbps Ethernet leaves two free pairs in a cat 5 cable, specifically to allow for connecting voice circuits.
answered 1 hour ago
The Photon
80.3k394190
answered 1 hour ago
The Photon
80.3k394190
answered 1 hour ago
The Photon
80.3k394190
answered 1 hour ago
The Photon
80.3k394190
80.3k394190
add a comment |Â
add a comment |Â
up vote
2
down vote
CAT5 cable has four separate twisted pairs. Use the two wires in one of those pairs for your telephone connection.
10/100 base T Ethernet uses the green and orange pairs, specifically so that you can still use the blue and brown pairs for telephones.
answered 2 hours ago
Dave Tweed♦
111k9132240
Just to be clear, are you saying use only two wires (from the same pair), to connect to the two telephone wires, or are you saying use two pairs (eg the blue pair and the brown pair).
– userSteve
2 hours ago
I really don't know how to say "the two wires in one of those pairs" any more clearly. Do NOT use two pairs. (You could have one phone connected to the blue pair, and a separate telephone connected to the brown pair, however.)
– Dave Tweed♦
1 hour ago
add a comment |Â
up vote
2
down vote
CAT5 cable has four separate twisted pairs. Use the two wires in one of those pairs for your telephone connection.
10/100 base T Ethernet uses the green and orange pairs, specifically so that you can still use the blue and brown pairs for telephones.
answered 2 hours ago
Dave Tweed♦
111k9132240
Just to be clear, are you saying use only two wires (from the same pair), to connect to the two telephone wires, or are you saying use two pairs (eg the blue pair and the brown pair).
– userSteve
2 hours ago
I really don't know how to say "the two wires in one of those pairs" any more clearly. Do NOT use two pairs. (You could have one phone connected to the blue pair, and a separate telephone connected to the brown pair, however.)
– Dave Tweed♦
1 hour ago
add a comment |Â
up vote
2
down vote
up vote
2
down vote
CAT5 cable has four separate twisted pairs. Use the two wires in one of those pairs for your telephone connection.
10/100 base T Ethernet uses the green and orange pairs, specifically so that you can still use the blue and brown pairs for telephones.
answered 2 hours ago
Dave Tweed♦
111k9132240
CAT5 cable has four separate twisted pairs. Use the two wires in one of those pairs for your telephone connection.
10/100 base T Ethernet uses the green and orange pairs, specifically so that you can still use the blue and brown pairs for telephones.
answered 2 hours ago
Dave Tweed♦
111k9132240
answered 2 hours ago
Dave Tweed♦
111k9132240
answered 2 hours ago
Dave Tweed♦
111k9132240
answered 2 hours ago
Dave Tweed♦
111k9132240
111k9132240
Just to be clear, are you saying use only two wires (from the same pair), to connect to the two telephone wires, or are you saying use two pairs (eg the blue pair and the brown pair).
– userSteve
2 hours ago
I really don't know how to say "the two wires in one of those pairs" any more clearly. Do NOT use two pairs. (You could have one phone connected to the blue pair, and a separate telephone connected to the brown pair, however.)
– Dave Tweed♦
1 hour ago
add a comment |Â
Just to be clear, are you saying use only two wires (from the same pair), to connect to the two telephone wires, or are you saying use two pairs (eg the blue pair and the brown pair).
– userSteve
2 hours ago
I really don't know how to say "the two wires in one of those pairs" any more clearly. Do NOT use two pairs. (You could have one phone connected to the blue pair, and a separate telephone connected to the brown pair, however.)
– Dave Tweed♦
1 hour ago
Just to be clear, are you saying use only two wires (from the same pair), to connect to the two telephone wires, or are you saying use two pairs (eg the blue pair and the brown pair).
– userSteve
2 hours ago
Just to be clear, are you saying use only two wires (from the same pair), to connect to the two telephone wires, or are you saying use two pairs (eg the blue pair and the brown pair).
– userSteve
2 hours ago
I really don't know how to say "the two wires in one of those pairs" any more clearly. Do NOT use two pairs. (You could have one phone connected to the blue pair, and a separate telephone connected to the brown pair, however.)
– Dave Tweed♦
1 hour ago
I really don't know how to say "the two wires in one of those pairs" any more clearly. Do NOT use two pairs. (You could have one phone connected to the blue pair, and a separate telephone connected to the brown pair, however.)
– Dave Tweed♦
1 hour ago
add a comment |Â
up vote
0
down vote
A CAT5 cable has 4 twisted pairs. You will want to use 1 pair of wires per phone line. The standard arrangement is the blue pair is the first phone line.
Assuming the wiring your connecting to is the standard Green/Red/Yellow/Black used in the US, and that it's connected correctly, connect the existing Red wire to the Blue with White wire, and Green to the White with Blue.
answered 2 hours ago
longneck
1536
add a comment |Â
up vote
0
down vote
A CAT5 cable has 4 twisted pairs. You will want to use 1 pair of wires per phone line. The standard arrangement is the blue pair is the first phone line.
Assuming the wiring your connecting to is the standard Green/Red/Yellow/Black used in the US, and that it's connected correctly, connect the existing Red wire to the Blue with White wire, and Green to the White with Blue.
answered 2 hours ago
longneck
1536
add a comment |Â
up vote
0
down vote
up vote
0
down vote
A CAT5 cable has 4 twisted pairs. You will want to use 1 pair of wires per phone line. The standard arrangement is the blue pair is the first phone line.
Assuming the wiring your connecting to is the standard Green/Red/Yellow/Black used in the US, and that it's connected correctly, connect the existing Red wire to the Blue with White wire, and Green to the White with Blue.
answered 2 hours ago
longneck
1536
A CAT5 cable has 4 twisted pairs. You will want to use 1 pair of wires per phone line. The standard arrangement is the blue pair is the first phone line.
Assuming the wiring your connecting to is the standard Green/Red/Yellow/Black used in the US, and that it's connected correctly, connect the existing Red wire to the Blue with White wire, and Green to the White with Blue.
answered 2 hours ago
longneck
1536
answered 2 hours ago
longneck
1536
answered 2 hours ago
longneck
1536
answered 2 hours ago
longneck
1536
1536
add a comment |Â
add a comment |Â
up vote
0
down vote
The twist in twisted pair helps reduce EMI and crosstalk for differential signals on that pair. If you use both wires in a pair as a single parallel line you lose the benefit of the twist and defeat your own purpose. (e.g Blue&Blue/White tied to red, Brown&Brown/White tied to green).
Use Blue and Blue/White as line one. Brown and Brown/White as line two.
You can still run 10/100 ethernet or two other lines over the orange and green pairs.
answered 1 hour ago
Phil C
9361117
add a comment |Â
up vote
0
down vote
The twist in twisted pair helps reduce EMI and crosstalk for differential signals on that pair. If you use both wires in a pair as a single parallel line you lose the benefit of the twist and defeat your own purpose. (e.g Blue&Blue/White tied to red, Brown&Brown/White tied to green).
Use Blue and Blue/White as line one. Brown and Brown/White as line two.
You can still run 10/100 ethernet or two other lines over the orange and green pairs.
answered 1 hour ago
Phil C
9361117
add a comment |Â
up vote
0
down vote
up vote
0
down vote
The twist in twisted pair helps reduce EMI and crosstalk for differential signals on that pair. If you use both wires in a pair as a single parallel line you lose the benefit of the twist and defeat your own purpose. (e.g Blue&Blue/White tied to red, Brown&Brown/White tied to green).
Use Blue and Blue/White as line one. Brown and Brown/White as line two.
You can still run 10/100 ethernet or two other lines over the orange and green pairs.
answered 1 hour ago
Phil C
9361117
The twist in twisted pair helps reduce EMI and crosstalk for differential signals on that pair. If you use both wires in a pair as a single parallel line you lose the benefit of the twist and defeat your own purpose. (e.g Blue&Blue/White tied to red, Brown&Brown/White tied to green).
Use Blue and Blue/White as line one. Brown and Brown/White as line two.
You can still run 10/100 ethernet or two other lines over the orange and green pairs.
answered 1 hour ago
Phil C
9361117
answered 1 hour ago
Phil C
9361117
answered 1 hour ago
Phil C
9361117
answered 1 hour ago
Phil C
9361117
9361117
add a comment |Â
add a comment |Â
userSteve is a new contributor. Be nice, and check out our Code of Conduct.
userSteve is a new contributor. Be nice, and check out our Code of Conduct.
userSteve is a new contributor. Be nice, and check out our Code of Conduct.
userSteve is a new contributor. Be nice, and check out our Code of Conduct.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2felectronics.stackexchange.com%2fquestions%2f400001%2fcat5-for-telephony%23new-answer', 'question_page');
);
Post as a guest
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
3
The telephone company runs the connection to your house over many miles of cable with substantially lower grade than CAT5. As long as your existing indoor wiring isn't any worse, switching those last few feet inside your house to CAT5 isn't going to make any difference.
– brhans
2 hours ago
1
@brhans Makes me think of gold plated fuses and very expensive mains cables for audiophiles.
– winny
1 hour ago
1
the incoming phone line is a twisted pair .... just keep the twisted pair going all the way to your phone ..... do not connect separate untwisted wires
– jsotola
28 mins ago