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Voip/sip phone cabling (alien.top)

submitted 1 year ago by Grant_Son@alien.top to c/voip@netheads.online

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Good Afternoon

Maybe a bit of an odd question but as I've alluded to in other posts I'm in the process of swapping out phones form our legacy PBX to voip handsets on a hosted could solution.

We have some phones that are wall mounted and I've found with some that getting a standard cat 5/6 cable into the back of the phone and getting it flush on the wall is not easy.

Would cutting an old phone cable and putting RJ45's on it in a 10/100 pin out work?
Probably 30cm/12" or less just to get form a socket in the wall out to the handset?

Thanks

Grant

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[–] thekeffa@alien.top 1 points 1 year ago (1 children)

Your absolutely best off using some of the flat/thin ethernet cord types that have been posted by others in this thread if space really does become an issue. You don't want to be repurposing cabling that is not intended for PoE, especially if your a business. I note your in the UK as well, so you will fail PAT testing too using non certified cable for PoE.

[–] Grant_Son@alien.top 1 points 1 year ago (1 children)

Having done pat testing (albeit a long time ago) wouldn't POE be outside of the regs as its considered low voltage?

Experience tells me that most PAT testers who don't have an IT background will Just sticker stuff and move on. From the contractors that used to PAT test out building I have seen a power cable that had been shut in a floor hatch under a desk with copper showing pass, presumably as the bit they could see was ok.
A printer or a work bench being repaired fail because the the rear cover was off and the fuser unit removed. A tester come out form under a desk start walking away then spot the laptop sitting on the desk, drop a sticker on its lid without even looking at it and then walk away. They were form a large, possibly national company that just did PAT & electrical testing & I'm not sorry to say they don't have the contract any more

[–] thekeffa@alien.top 1 points 1 year ago

You are probably right, most testers can't be arsed and will stick a sticker on a toaster sitting in a full bathtub if it means they get home quicker.

POE is a weird one when it comes to PAT testing. Because the phones can be powered by a plug in power adaptor they qualify for PAT testing and the devices that supply the power for the POE qualify for PAT testing so it often comes down to how your PAT tester wants to interpret it. Some take the whole chain from power socket to ethernet cabling while others just consider the devices themselves. If you get the former though, they will fail 2 pair (If it can even carry PoE).