rj11 cable help

[KIPAX]

I ahve a sky router.. theres a white box on all with phone connection and an adsl ..from this is a wire to the model.. adsl lead.. this lead has the same connection at either end.. in modem and in wall.. no markings..

I am changing rooms.. I just want a longer lead and run it through..

this seems to be the cable but I was wondering if there is different quality cable.. am i buying cheap...

http://www.ebay.co.uk/itm/RJ11-to-R...K_Computing_Networking_SM&hash=item33728033ac

 

[arad85]

The answer is - it depends.

Basically, the wire carries a high frequency signal from the modem to the BT socket. The cabling from the exchange to the socket is shielded twisted pair and has well known properties. You are then transmitting the last 10m over that cable.

I needed to move my Infinity modem (60/16Mbit connection) from one side of the room to the other. I ended up paying £10 for a 7.5m Cat6 cable (gbit Ethernet) over something like that. Infinity uses higher frequencies, but I had tried a Cat5 (good for 100Mbit Ethernet) and even that lost me about 7% of my top speed. ADSL is lower bandwidth, but...

You may find that works, but personally I'd drop onto ebay and search for cat5e (or cat6) rj11 with the length that you want (think I bought mine from mr..telephone). Not saying it won't work, but for an extra few quid, you will have peace of mind that it isn't the cable causing any dropouts/lower speeds.

 

[andyred]

Hi Tony

If you need to use an RJ11 cable (as per your link) the only thing I would say is don't buy a flat cable - the BT engineer that came to put infinity at FIL's said they are the cheapest of the cheap and tend to give lots of problems - he recommended a round shielded cable (similar to the Cat 5e cable) especially if you are moving it over a distance.

I presume you can't use a Cat 5e RJ45 cable (network cable) to connect the 2 - if you can and want it quickly, pop round the corner to screwfix, they have a 10m extension cable

http://www.screwfix.com/p/10m-utp-cat5e-cable-beige/27015?_requestid=330276

You can get them slightly cheaper on line if you aren't in a rush...

 

[arad85]

I presume you can't use a Cat 5e RJ45 cable (network cable) to connect the 2

Just for avoidance of doubt... the plug in the ADSL splitter (or Infinity plate if you have Infinity) is an RJ-11. Whilst Ethernet plugs (RJ-45) look similar, they are not plug compatible.

 

[Byker28i]

Just for avoidance of doubt... the plug in the ADSL splitter (or Infinity plate if you have Infinity) is an RJ-11. Whilst Ethernet plugs (RJ-45) look similar, they are not plug compatible.

Actually, just to correct that, an rj-11 will plug into a rj-45 socket, they are designed to and it's how you can pass rj-11 services (I.e. telephone based) through structured cabling.

However as the rj-11 socket is small their than rj-45, then obviously a cat5 Ethernet cable with rj-45 plug won't fit into a rj-11 ( telephone socket).

 

[Byker28i]

Maximum length of cable for adsl use according to the spec is 30m. Buy a decent quality one and you should be fine.
Or max length for network cable is 100m. You could leave the adsl router in the room with the socket and run a network cable, or possibly one of the power/Ethernet adapters, but physical cable is best.

 

[KIPAX]

I am absoloutly NOT SURE what I need.. hence the question.. many thanks for the replies people..much appreciated as always.. but I am getting a bit lost ..

I am guessing its an rj11 I need... the current wire looks just like a phone to socket wire.. black wire small square end.. goes from wall phone socket to aky modem... reading the descriptions on ebay and looking at pictures rj11 looks like what i need.. my wire i have checked with a thingy glass.. theres no markings anywhere to say what it is

Now more confused than before..erk

Need about 10m at most..

 

[arad85]

From socket to modem/router = RJ11. From router to PC = RJ45 (ethernet). If you are moving the router, you need RJ11.

 

[KIPAX]

From socket to modem/router = RJ11. From router to PC = RJ45 (ethernet). If you are moving the router, you need RJ11.

thats exactly what i thought..thanks then i posted on here to double check and my head nearly fell off...

got an rj11 from local computer shop.. more expensive than ebay but still only a fiver.. plugged in for test and works great thanks