What is this in my wall?











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I am removing wall paneling and this is in the corner of the room and wondering if it is safe to remove










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  • 10




    Ahhh...the olden days before “wireless”.
    – Lee Sam
    2 days ago






  • 1




    Can you measure 48V DC across any pair of those wires?
    – ThreePhaseEel
    2 days ago






  • 10




    This question made me feel so old in such a short amount of time.
    – Todd Wilcox
    2 days ago










  • New contributor, I know. It just seems to smell of trolling. Like asking what a newspaper is. POTS. It's still out there.
    – mckenzm
    yesterday















up vote
10
down vote

favorite
2












enter image description here



I am removing wall paneling and this is in the corner of the room and wondering if it is safe to remove










share|improve this question









New contributor




dbollig is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
















  • 10




    Ahhh...the olden days before “wireless”.
    – Lee Sam
    2 days ago






  • 1




    Can you measure 48V DC across any pair of those wires?
    – ThreePhaseEel
    2 days ago






  • 10




    This question made me feel so old in such a short amount of time.
    – Todd Wilcox
    2 days ago










  • New contributor, I know. It just seems to smell of trolling. Like asking what a newspaper is. POTS. It's still out there.
    – mckenzm
    yesterday













up vote
10
down vote

favorite
2









up vote
10
down vote

favorite
2






2





enter image description here



I am removing wall paneling and this is in the corner of the room and wondering if it is safe to remove










share|improve this question









New contributor




dbollig is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











enter image description here



I am removing wall paneling and this is in the corner of the room and wondering if it is safe to remove







phone-wiring






share|improve this question









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dbollig is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









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Check out our Code of Conduct.









share|improve this question




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edited 2 days ago









Machavity

6,30011634




6,30011634






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asked 2 days ago









dbollig

513




513




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New contributor





dbollig is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






dbollig is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.








  • 10




    Ahhh...the olden days before “wireless”.
    – Lee Sam
    2 days ago






  • 1




    Can you measure 48V DC across any pair of those wires?
    – ThreePhaseEel
    2 days ago






  • 10




    This question made me feel so old in such a short amount of time.
    – Todd Wilcox
    2 days ago










  • New contributor, I know. It just seems to smell of trolling. Like asking what a newspaper is. POTS. It's still out there.
    – mckenzm
    yesterday














  • 10




    Ahhh...the olden days before “wireless”.
    – Lee Sam
    2 days ago






  • 1




    Can you measure 48V DC across any pair of those wires?
    – ThreePhaseEel
    2 days ago






  • 10




    This question made me feel so old in such a short amount of time.
    – Todd Wilcox
    2 days ago










  • New contributor, I know. It just seems to smell of trolling. Like asking what a newspaper is. POTS. It's still out there.
    – mckenzm
    yesterday








10




10




Ahhh...the olden days before “wireless”.
– Lee Sam
2 days ago




Ahhh...the olden days before “wireless”.
– Lee Sam
2 days ago




1




1




Can you measure 48V DC across any pair of those wires?
– ThreePhaseEel
2 days ago




Can you measure 48V DC across any pair of those wires?
– ThreePhaseEel
2 days ago




10




10




This question made me feel so old in such a short amount of time.
– Todd Wilcox
2 days ago




This question made me feel so old in such a short amount of time.
– Todd Wilcox
2 days ago












New contributor, I know. It just seems to smell of trolling. Like asking what a newspaper is. POTS. It's still out there.
– mckenzm
yesterday




New contributor, I know. It just seems to smell of trolling. Like asking what a newspaper is. POTS. It's still out there.
– mckenzm
yesterday










1 Answer
1






active

oldest

votes

















up vote
23
down vote













This is a telephone jack. If you measure 48v DC or so between wires then it is live, even if you don't currently have phone service. Ideally - live or not - you should try and find the other end of the wires and disconnect it if you aren't going to use it. That could be another jack elsewhere in the building or a patch panel or terminal block - typically on a wall in the basement or on an outside wall.



It is generally safe to remove this (i.e., cut off what you can see and cover it up) if it is not live, but that could confuse someone later on who finds the other end and is trying to install phones and can't figure out where a cable ends.



It is not safe to remove this if it is live (e.g., 48v DC) because (a) if the wires short it will affect any equipment that is connected to the same phone line and (b) even low voltage/low current could potentially be a fire hazard. That is extremely low risk if outside the wall, even if not quite connected correctly (as is the case currently) but hidden inside a wall that would not be a good thing. The risk is low - if you really want to disconnect it and you can't find the other end, taping (electrical tape) the end of the cable to protect it is advisable.






share|improve this answer























  • It looks like a junction block as it is not obviously a socket and there are "posts".
    – mckenzm
    yesterday










  • @mckenzm It is most definitely a jack. On the part that is NOT on the wall, to the left there are all 4 (red/green/yellow/black) wires going into the back of what is (except you can't see it from this angle) a standard phone jack. This was a very common configuration years ago. Most newer jacks (all the ones I could quickly find) have the 4 screw terminals and the actual jack as one piece with the cover (that in this one contains the actual jack) being just a piece of plastic.
    – manassehkatz
    yesterday






  • 2




    I see it, RJ12-ish molding where the wires are going, apologies.
    – mckenzm
    yesterday










  • No problem. I've been dealing with these jacks for a long time.
    – manassehkatz
    yesterday











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1 Answer
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active

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1 Answer
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active

oldest

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up vote
23
down vote













This is a telephone jack. If you measure 48v DC or so between wires then it is live, even if you don't currently have phone service. Ideally - live or not - you should try and find the other end of the wires and disconnect it if you aren't going to use it. That could be another jack elsewhere in the building or a patch panel or terminal block - typically on a wall in the basement or on an outside wall.



It is generally safe to remove this (i.e., cut off what you can see and cover it up) if it is not live, but that could confuse someone later on who finds the other end and is trying to install phones and can't figure out where a cable ends.



It is not safe to remove this if it is live (e.g., 48v DC) because (a) if the wires short it will affect any equipment that is connected to the same phone line and (b) even low voltage/low current could potentially be a fire hazard. That is extremely low risk if outside the wall, even if not quite connected correctly (as is the case currently) but hidden inside a wall that would not be a good thing. The risk is low - if you really want to disconnect it and you can't find the other end, taping (electrical tape) the end of the cable to protect it is advisable.






share|improve this answer























  • It looks like a junction block as it is not obviously a socket and there are "posts".
    – mckenzm
    yesterday










  • @mckenzm It is most definitely a jack. On the part that is NOT on the wall, to the left there are all 4 (red/green/yellow/black) wires going into the back of what is (except you can't see it from this angle) a standard phone jack. This was a very common configuration years ago. Most newer jacks (all the ones I could quickly find) have the 4 screw terminals and the actual jack as one piece with the cover (that in this one contains the actual jack) being just a piece of plastic.
    – manassehkatz
    yesterday






  • 2




    I see it, RJ12-ish molding where the wires are going, apologies.
    – mckenzm
    yesterday










  • No problem. I've been dealing with these jacks for a long time.
    – manassehkatz
    yesterday















up vote
23
down vote













This is a telephone jack. If you measure 48v DC or so between wires then it is live, even if you don't currently have phone service. Ideally - live or not - you should try and find the other end of the wires and disconnect it if you aren't going to use it. That could be another jack elsewhere in the building or a patch panel or terminal block - typically on a wall in the basement or on an outside wall.



It is generally safe to remove this (i.e., cut off what you can see and cover it up) if it is not live, but that could confuse someone later on who finds the other end and is trying to install phones and can't figure out where a cable ends.



It is not safe to remove this if it is live (e.g., 48v DC) because (a) if the wires short it will affect any equipment that is connected to the same phone line and (b) even low voltage/low current could potentially be a fire hazard. That is extremely low risk if outside the wall, even if not quite connected correctly (as is the case currently) but hidden inside a wall that would not be a good thing. The risk is low - if you really want to disconnect it and you can't find the other end, taping (electrical tape) the end of the cable to protect it is advisable.






share|improve this answer























  • It looks like a junction block as it is not obviously a socket and there are "posts".
    – mckenzm
    yesterday










  • @mckenzm It is most definitely a jack. On the part that is NOT on the wall, to the left there are all 4 (red/green/yellow/black) wires going into the back of what is (except you can't see it from this angle) a standard phone jack. This was a very common configuration years ago. Most newer jacks (all the ones I could quickly find) have the 4 screw terminals and the actual jack as one piece with the cover (that in this one contains the actual jack) being just a piece of plastic.
    – manassehkatz
    yesterday






  • 2




    I see it, RJ12-ish molding where the wires are going, apologies.
    – mckenzm
    yesterday










  • No problem. I've been dealing with these jacks for a long time.
    – manassehkatz
    yesterday













up vote
23
down vote










up vote
23
down vote









This is a telephone jack. If you measure 48v DC or so between wires then it is live, even if you don't currently have phone service. Ideally - live or not - you should try and find the other end of the wires and disconnect it if you aren't going to use it. That could be another jack elsewhere in the building or a patch panel or terminal block - typically on a wall in the basement or on an outside wall.



It is generally safe to remove this (i.e., cut off what you can see and cover it up) if it is not live, but that could confuse someone later on who finds the other end and is trying to install phones and can't figure out where a cable ends.



It is not safe to remove this if it is live (e.g., 48v DC) because (a) if the wires short it will affect any equipment that is connected to the same phone line and (b) even low voltage/low current could potentially be a fire hazard. That is extremely low risk if outside the wall, even if not quite connected correctly (as is the case currently) but hidden inside a wall that would not be a good thing. The risk is low - if you really want to disconnect it and you can't find the other end, taping (electrical tape) the end of the cable to protect it is advisable.






share|improve this answer














This is a telephone jack. If you measure 48v DC or so between wires then it is live, even if you don't currently have phone service. Ideally - live or not - you should try and find the other end of the wires and disconnect it if you aren't going to use it. That could be another jack elsewhere in the building or a patch panel or terminal block - typically on a wall in the basement or on an outside wall.



It is generally safe to remove this (i.e., cut off what you can see and cover it up) if it is not live, but that could confuse someone later on who finds the other end and is trying to install phones and can't figure out where a cable ends.



It is not safe to remove this if it is live (e.g., 48v DC) because (a) if the wires short it will affect any equipment that is connected to the same phone line and (b) even low voltage/low current could potentially be a fire hazard. That is extremely low risk if outside the wall, even if not quite connected correctly (as is the case currently) but hidden inside a wall that would not be a good thing. The risk is low - if you really want to disconnect it and you can't find the other end, taping (electrical tape) the end of the cable to protect it is advisable.







share|improve this answer














share|improve this answer



share|improve this answer








edited 2 days ago

























answered 2 days ago









manassehkatz

6,065929




6,065929












  • It looks like a junction block as it is not obviously a socket and there are "posts".
    – mckenzm
    yesterday










  • @mckenzm It is most definitely a jack. On the part that is NOT on the wall, to the left there are all 4 (red/green/yellow/black) wires going into the back of what is (except you can't see it from this angle) a standard phone jack. This was a very common configuration years ago. Most newer jacks (all the ones I could quickly find) have the 4 screw terminals and the actual jack as one piece with the cover (that in this one contains the actual jack) being just a piece of plastic.
    – manassehkatz
    yesterday






  • 2




    I see it, RJ12-ish molding where the wires are going, apologies.
    – mckenzm
    yesterday










  • No problem. I've been dealing with these jacks for a long time.
    – manassehkatz
    yesterday


















  • It looks like a junction block as it is not obviously a socket and there are "posts".
    – mckenzm
    yesterday










  • @mckenzm It is most definitely a jack. On the part that is NOT on the wall, to the left there are all 4 (red/green/yellow/black) wires going into the back of what is (except you can't see it from this angle) a standard phone jack. This was a very common configuration years ago. Most newer jacks (all the ones I could quickly find) have the 4 screw terminals and the actual jack as one piece with the cover (that in this one contains the actual jack) being just a piece of plastic.
    – manassehkatz
    yesterday






  • 2




    I see it, RJ12-ish molding where the wires are going, apologies.
    – mckenzm
    yesterday










  • No problem. I've been dealing with these jacks for a long time.
    – manassehkatz
    yesterday
















It looks like a junction block as it is not obviously a socket and there are "posts".
– mckenzm
yesterday




It looks like a junction block as it is not obviously a socket and there are "posts".
– mckenzm
yesterday












@mckenzm It is most definitely a jack. On the part that is NOT on the wall, to the left there are all 4 (red/green/yellow/black) wires going into the back of what is (except you can't see it from this angle) a standard phone jack. This was a very common configuration years ago. Most newer jacks (all the ones I could quickly find) have the 4 screw terminals and the actual jack as one piece with the cover (that in this one contains the actual jack) being just a piece of plastic.
– manassehkatz
yesterday




@mckenzm It is most definitely a jack. On the part that is NOT on the wall, to the left there are all 4 (red/green/yellow/black) wires going into the back of what is (except you can't see it from this angle) a standard phone jack. This was a very common configuration years ago. Most newer jacks (all the ones I could quickly find) have the 4 screw terminals and the actual jack as one piece with the cover (that in this one contains the actual jack) being just a piece of plastic.
– manassehkatz
yesterday




2




2




I see it, RJ12-ish molding where the wires are going, apologies.
– mckenzm
yesterday




I see it, RJ12-ish molding where the wires are going, apologies.
– mckenzm
yesterday












No problem. I've been dealing with these jacks for a long time.
– manassehkatz
yesterday




No problem. I've been dealing with these jacks for a long time.
– manassehkatz
yesterday










dbollig is a new contributor. Be nice, and check out our Code of Conduct.










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