Re: Dtmf over rj45

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Author: Herminio Hernandez Jr.
Date:  
To: Main PLUG discussion list
Subject: Re: Dtmf over rj45
Steve is right you can use RJ45 to transmit. The signal but Ethernet switch are expecting Ethernet frames.

Sent from my iPhone

> On Dec 1, 2017, at 7:18 AM, Stephen Partington <> wrote:
>
> Are you talking about embedding this sort of functional noise into a line being used by ethernet? and yes most quality switches would try to clean up the noise in order to secure the data unless it just created enough of an interruption to just disrupt the connection as a whole.
>
> RJ45 is a socket type so you can wire it to do whatever you want. you can use cat 4,5,6 cable to transport anything you want. I know multiple sites that wired ethernet cable for POTS just because it gave them the ability to do a number of things based on need.
>
>> On Fri, Dec 1, 2017 at 6:41 AM, Aaron Jones <> wrote:
>> Any one have any experience with dtmf (beeps and boops over phone) but using rj45 instead of rj11?
>>
>> I viewed a claim that the intel me can produce dtmf instructions that will be regarded as noise by tools like wireshark and can be used to transfer things like encryption keys surreptitiously over the net without being seen by monitoring tools.
>>
>> Essentially data is hidden in sight as noise on the line and picked up somewhere else.
>>
>> Rj11 phone line can do this. But can it be done with rj45? Wouldn’t the first switch it hit just smooth noise?
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>
>
> --
> A mouse trap, placed on top of your alarm clock, will prevent you from rolling over and going back to sleep after you hit the snooze button.
>
> Stephen
>
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