RJ45 splitter for Ethernet - possible ?
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Posted by on March 29, 2008, 11:57 pm
Please log in for more thread options That is my experience. I have been parroting the company line about florecent ballasts and ringing current, simply because it is accepted practice but I have never fixed a problem by moving a Cat5 away from these things. You just do it so somebody else doesn't come along and say "there is your problem", waste a lot of time and not fix anything either. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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Posted by DTC on March 29, 2008, 1:01 am
Please log in for more thread options > A telephone ringing signal is an 88v 20Hz A.C. signal superimposed on
> 48v nominal D.C. supervisory voltage. True > not appropriate for sharing a Cat 5e cable run with data.
False - We have several 200 foot runs of buried CAT5 that carry 100 Meg data, digital phone TDM, analog POTS lines, and T1. | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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Posted by on March 29, 2008, 6:01 pm
Please log in for more thread options >
> We have several 200 foot runs of buried CAT5 that carry > 100 Meg data, digital phone TDM, analog POTS lines, and T1. Which is precisely *why* twisted-pair ethernet was designed to coexist with those kinds of signals. -Larry Jones Monopoly is more fun when you make your own Chance cards. -- Calvin | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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Posted by on March 28, 2008, 7:51 pm
Please log in for more thread options On Fri, 28 Mar 2008 16:47:40 -0400, lawrence.jones@siemens.com wrote:
>> Don't do this with POTS phones unless you can live with the errors
>> when the phone rings. >
>Since 10Base-T and 100Base-TX were both designed to coexist with phone >lines in the same cable, that shouldn't be a problem. Maybe BICSI has changed their opinion but that was what I heard when I was in school. I know it works but it is not recomended | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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Posted by News Reader on March 28, 2008, 7:09 pm
Please log in for more thread options Might want to check your system clock.
Your last post came in about an hour early. :>)
Best Regards, News Reader gfretwell@aol.com wrote: > On Fri, 28 Mar 2008 16:47:40 -0400, lawrence.jones@siemens.com wrote:
> >>> Don't do this with POTS phones unless you can live with the errors
>>> when the phone rings. >> Since 10Base-T and 100Base-TX were both designed to coexist with phone
>> lines in the same cable, that shouldn't be a problem. >
> > Maybe BICSI has changed their opinion but that was what I heard when I > was in school. I know it works but it is not recomended | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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>rejection. People who have tried to provoke errors from induced noise
>have found it quite difficult to do.
>
>-Larry Jones