Cabling

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martinjward

68 posts

Master Geek
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#154680 4-Nov-2014 12:01

Will try to shorten the extended version for you...

- Grandparents have moved into a new house, they have an on premise supplied modem from (insert palmerston north based ISP here), said modem has a VOIP service which can be access via POTS handset by simply plugging in via RJ11 connection.
- After talking to ISP they have said I could get a splitter to attached to RJ11 connection in order to add additional POTS handsets
- Helpfully the electrician has installed only ethernet with RJ45 connections throughout the house

So what are my options here? I was thinking;

RJ11 to RJ45 splitter (is there even such a thing?) ---> patch cords to patchbay ---> wall socket via RJ45 to RJ11 cable/adapter ---> POTS handset

Hmmmm.... what excitement....

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24 posts

Geek
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#1168385 4-Nov-2014 12:18

Hi - you can use RJ11's in RJ45 sockets, just be careful that's its in the hole correctly. Its common to patch analogue lines in this method when you have structured cabling.

You would just need something to turn RJ11 to 2x RJ11's or RJ11 to 2xPSTN depending on what your analogue phones have.

Thanks

Mark

muttley68

63 posts

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#1168431 4-Nov-2014 13:20

I would not recommend plugging RJ11's into RJ45 sockets. The plastic outside edges of the RJ11 plug can bend up pins 1 and 8 in the RJ45 socket, and after a while when you plug an rj45 plug in, those pins don't make contact (they lose some of their 'spring'), and you have no data circuit. I replaced quite a few damaged RJ45 sockets because of this (admittedly some years ago now, but I doubt they have changed the construction of RJ45 sockets much since then)

martinjward

68 posts

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#1168436 4-Nov-2014 13:27

Sure I would only 'plug/connect' two different socket types via an adapter anyway.

Is a 4 way RJ11 splitter a standard piece of equipment, or does sound like some odd piece of equipment you wouldn't expect to work?

shk292

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#1168440 4-Nov-2014 13:32

Why not just plug a DECT basestation into the existing RJ11 socket and then use additional DECT handsets wherever required?

martinjward

68 posts

Master Geek
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#1168446 4-Nov-2014 13:35

Could be an option, in which case do you have any experience with good DECT base-station solutions?

Ideally I would prefer to use existing hardware, but if all the cabling is going to cost just as much as new hardware then I will likely go that route.

shk292

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#1168458 4-Nov-2014 13:47

martinjward: Could be an option, in which case do you have any experience with good DECT base-station solutions?

Ideally I would prefer to use existing hardware, but if all the cabling is going to cost just as much as new hardware then I will likely go that route.

I was just meaning a standard DECT phone, we have a Panasonic one that came with two handsets and a built-in answerphone, although you don't need the latter on VOIP. Works perfectly throughout our large house and average section. Plug the base station into your router's RJ11, then you just need a handset on a charging station anywhere you need a phone.

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martinjward

68 posts

Master Geek
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#1168500 4-Nov-2014 14:10

Fair call, do you know if there is a limit to the amount of additional phones?

nbroad

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#1168525 4-Nov-2014 14:36

you could use something like this:

http://www.cablesdirect.co.nz/www/pdfs/hbg1008.pdf

you'd need to make a lead with solid conductor cable and an RJ11 on one end for the modem VoIP port and punch the blue pair onto this module.
you then use RJ45 patch leads to "liven up" the RJ45 ports around your house for phone.

then you use MODTAP RJ45 to BT adapters at each location for your phones.

here's another idea - this is what you were asking for in the first place

Product Code: C-RJ45DS-4B | Brand: Dynamix DYNAMIX RJ45 Splitter, Bridged All Pins 4 Way

http://www.cablesdirect.co.nz/www/pdfs/08614.pdf

edit: but the RJ45DS-4B is not RJ11 sorry. there must be something out there to suit your needs.

martinjward

68 posts

Master Geek
+1 received by user: 2

#1168531 4-Nov-2014 14:42

Thanks, yeah I saw that 4 port rj45 bridged example which I think would work, is there such thing as an rj11 version of that?

linw

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#1168807 4-Nov-2014 20:21

I vote for DECT as well. The days of hanging all phones off separate cables are surely over.

Yabanize

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#1168852 4-Nov-2014 21:11

Are the RJ45's structured (star) or daisy chain?

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wally22

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#1168962 5-Nov-2014 00:05

Definitely +1 for DECT. I have an old DORO DECT setup approx 14 years old works great in my Vodafone RBI telephone socket. Just a power cable required for each charging station. You can pick up triple handset packs for a reasonable price.

martinjward

68 posts

Master Geek
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#1169003 5-Nov-2014 08:06

Ok I am coming round to the DECT option, however one, of those phones we are talking about it one with big button and a super loud speaker, you know one for old folk.... I wont be able to integrate this phone using the DECT solution.

martinjward

68 posts

Master Geek
+1 received by user: 2

#1169004 5-Nov-2014 08:08

Yabanize: Are the RJ45's structured (star) or daisy chain?

Hmm, yet to find that out from the electrician, do you know what standard practice would be for cabling ethernet within a house? I would of thought they would have some sort of little patch bay somewhere, but I couldn't find anything along those lines in the house....

Spyware

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#1169011 5-Nov-2014 08:37

If its Ethernet then obviously has to be star wired to a patch panel. If it isn't then have the electrician come back and rewire the house as it should be for free.

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