hi there my name's Vince from mr. telephone and today I'm going to talk about the LJ series of jacks so that LJ means line jack so for example a 2 stroke 3 a 3 stroke 3 a3 stroke one a I'm gonna go through what each one of them are and then when you come to buy you know what you're after because it can be a bit confusing because there's so many different types but once you get your head around it it's it's quite straightforward so I've got the more laid out here over here this is 1 series 2 Series 3 series 4 series and 5 series so I'm just going to talk about the 3 series to begin with because I've got all the sockets of off each of each type so then I can once you understand the 3 series you will understand the 1 2 4 and 5 so on the 3 series you have a three-strike 1 a 3 strength 2 8 3 stroke 3 a 3 throats 3 stroke for a three-stroke 5 a and a 3 strokes 6 8 and I'm going to just explain what each one of them are and the same thing follows on the different ones so example on the 2 series at pieces - strike one - strike three - stroke four blah blah blah so let's go through the 3 series first now this first one here this is a three-stroke 1a and this is also known as basically this has got the mastering component since a lot of people call this the master socket it's got the it's got the ring capacitor here that's to allow the AC ring in it's got there this little black one here is a surge protector and that will limit the high voltage spikes on the line and this is a little resistor here this blue one here is a resistor and that's the test resistor it's also called an out-of-service resistor and that set it allows this service providers to do remote testing if you haven't got any telephones plugged into the line so basically the three series and this is a 1a so that's a three-stroke 1a now all of the 3 series ah if you have a look at the size they are approximately 85 millimeter by 85 millimeter so they're there 85 by 85 and they look like that these ones don't come with any back boxes because the idea is they're going to be flush mounted so if you've got an electrical back box already sunk into the wall so for example if you've been doing some renovation works or if you're doing if you're doing you know on a new build property then all the back boxes will be sunk into the wall and the wires would be all hidden and you would use a flush socket like this so the three series is it will fit a standard electrical back box this is I'm talking about in the UK now a standard UK electrical back box so the one that the three series three stroke 1a 2a and 3a all have IDC connections so I'm just going to just going to whiz through them now just go down and have a look so this is a three-stroke one a three-stroke two a three-stroke 3a and three stroke for a three-stroke 5a and three stroke six eight and as you can see the 1 2 & 3 a's all have IDC connections and the four five and six a's all have screw connections so basically the three stroke 1a is the one with all the mastering components and the IDC the 3 stroke 2a is what's called a PA bx socket so it just has the capacitor II and often it was set up that the service resistor but sometimes it doesn't so but it will have the capacity to allow it to ring because phone systems in offices often just work on you need to fit these ones in because they don't have the ringer wire so you need to have the capacities to make the phones ring so this is a three-stroke to a the three stroke 3a has no components at all it's also known as a slave socket and extension socket so you will have these in your house in a normal residential house after the master socket you would fit extension sockets so that's a three-strike watt a three-strike 283 stroke 3a now we come on to the screw terminal versions this is exactly the same as a three-stroke 1a which was this one here asserts it has screw terminals and because it's called screw terminals is called a three-stroke for a but the same applies it's got the capacitor the surge protector and the resistor again this is the PBX version screw terminal so this is a three-stroke for a with just a chatter and this one is a three-stroke wrong sorry this one here is a three-stroke 5a and this one is a three-stroke 6a so this one again is just like the three stroke three eight but with screw terminals so this is a three-stroke 6a and the same thing applies to all the others so if I just quickly do the two series the two series are smaller they are 65 mil by 65 mil and they come with a backdrops now these are for surface mounting so if you were going to put these just above your skirting border on your skirting board this is for surface wiring and where you need to install the back box for service mountain if you have a look here this is a two stroke 1a same as a three-stroke 1a put the two series the smaller ones to stroke one ace who's got the capacitor surge protector and the resistor so that's just to stroke money if it didn't have the capacitor and resistor it would be a two stroke two eight if it didn't have any of them it would be a two stroke three eight the same as the three stroke 3a and then we move on to the screw terminal version again exactly the same as the three stroke for a this is a two stroke for a if it didn't have the capacitor a surge protector it would be a two stroke 5a and if it didn't have any of those things if it was just a screw terminal it would be a two stroke six eight yes so does that make sense so it's two straight money and then equivalent in here would be a to structure a equivalent here would be a two stroke 3a this is a two stroke for a two stroke 5a and with no components to stroke six eight again the same applies to the one series the one series are not really used nowadays if you can have a look at the back box is kind of incorporated into the socket so it's a it's a wider socket and you just have this little black Bank pay that goes on the wall so on the two series you have to put the cable through the back box and then you fit the the front plate to the cable but on this one you screw the back plate to the wall and then the back locks and the socket is all incorporated in one don't really see these nowadays but these are a smaller type socket so if you have a look it's roughly 51 52 millimeters again same applies this one here because the screws screw terminals and it's got all the mastering components this would be a one stroke for a and again you know if it was an IDC it would be a one stroke one a blah blah blah saying the same principle down now the four series is this series here and the difference is this is for two lines so this allows two lines the one two and three series only allow one line but this before series allows two lines so you've got circuit one a circuit two so if you had two telephone numbers in your house then you would terminate one circuit one and one on circuit two it's basically like two sockets stuck together on the one on the one faceplate the same applies again for stroke one eight because it's got IDC terminals and it's got a capacitor surge processor surge protector a resistor if it didn't have the surge protector and resistor it would be a four stroke to a this one here is a four stroke 3a so for meeting for series and 3a because it's got no mastering components it's just a slave socket and here you have the four stroke for a because we've moved over two screw terminals and you've got all the mastering components take away the surge protector and resistor and it would become the four stroke 5a take away the search autumn a stirring components and it just becomes a normal extension it will be the fourth stroke six eight so that's the four series and lastly this is the five series this is where you have two sockets for only one line so just one telephone number and it terminates just one telephone number but it allows two items to be plugged into that one telephone number it's exactly the same as using the little double adapter so again these are not really used because it's just as easy to fit one of the four series ones and just plug in a double adapter but some people like these because they're a bit neater again same thing applies this is a five stroke sorry this one here is actually a five stroke for a because it's got the mastering components but it's got the screw terminals if it didn't have the mastering components it would be a at five stroke 6a if it just had the capacitor with five stroke 5a and if it had IDC connections rather than screw terminals here it would be a five stroke 1a so you can see the different series 1 series 2 Series 3 series 4 series and 5 series and then you know the difference of each one that stroke 1 is automation components an IDC stroke 2 is the capacitor on IDC stroke 3 is no mastering components on IDC stroke 4 is all the mastering components on screw terminals stroke 5 is just a capacitor on screw terminals and Stroke 6 is no components with screw terminals and obviously if it's IDC you will need to use edit all there and it will punch down tool like so and if it's screw terminals you will need to use a little flat headed screwdriver like so so where hopefully that has cleared it up a little bit if you want to if you want to buy any of my items so I have these all for sale in my ebay shop you can always send me a message if you can't find it this links through to my eBay Shop that's www.amazon.com ok hope you found the video useful I will be doing a lot more videos in the future and please subscribe to my channel for 40 other videos thanks off of your time take care bye name