There's no mechanical switching left -- the dial plan is because cell phones have a Send button. On a cell phone, you dial the 7 or 10 digits, then press Send and knows you're done and it's time to send the whole number to the phone switch. On a landline, each digit is sent to the phone switch as you dial it, and there's no way for the phone to tell the switch that you're done. If the first digit you dial is 1, that means ten more digits are coming, if it's 2-9 that means it's the first of seven digits. You can dial numbers in your own area code as 1+ ten digits if you want. (This is a slight oversimplification, since there are places where all numbers are dialed as 10 digits, and in Texas places where you have to dial toll calls with a 1+10 and local calls ten digits without 1+ because someone thought it was a good idea.)You might note that international numbers dialed with 011 are of varying lengths and the phone switch can only tell that you're done by timing out, so why don't they do that on other calls. The answer is that timeouts are unreliable and slow down calling, and there are vastly fewer international than domestic calls placed from the U.S.
If it’s a police/legal wiretap, no. The wiring in and around your house, and your phone, don’t need to be physically touched, like in the old days.The intercept happens back in the phone company switching offices.Illegal taps are more sophisticated than in the old days. It used to be you’d here a drop in volume when a tap was activated, or a humming noise. Also, back then, you could buy a device that you hooked to your phone line, that would give an indication that the line impedance was being changed by some device clipped across the line.Now, there are so many devices, that you really need an expert. You can look outside at the NID, where your house wiring meets the phone company’s, but you probably don’t know what to look for, it’s hard to explain, and besides, anybody worth a damn would hook up to the phone company side of the NID, and you need a special tool to open it. Even if you got the tool, again, you probably wouldn’t know what to look for. You could open up your phones, and see if something inside looks out of place, a device lying on top of everything else, doesn’t appear to be part of the original manufacturer equipment. This is more obvious, but you’d still need some expertise.You could buy a cheap radio scanner, if there is a transmitter in your house, by repeatedly hitting “rescan” while you are on the phone, if someone has a bug somewhere and is sitting in a car listening, or has a voice activated recorder hooked up, you may catch it.There are also those 3 foot high ugly green cans in your yard.Again, you need a special tool to get in there, but that won’t stop a pro.So either find a pro, like a private detective who can point you at one, or you can try the “Midway AF trick”, where the US transmitted a fake message in the clear, and then waited to see if the Japanese reacted.Get a friend, and agree on disinformation, that you think the person listening might react to. If that person brings up that fake information to you, you will know. Like “I wrecked the car…hope my significant other doesn’t find out. I got it fixed quick. Thanks for loaning me the $500, I’ll pay you back.” If significant other mentions a loan, or wrecked car…..If you do find someone tapping your phone, it is a Federal Offense, under the Electronic Communications Privacy Act.Call the FBI.
Landline refers to a fixed phone service… as opposed to a mobile phone service. So a landline number is a number attached to a landline (fixed) phone service.In Australia, for example:All mobile numbers begin with 04 (or +614 if you're dialing from overseas).All landline numbers begin with one of the common area codes: 02, 03, etc.In many countries, there is no way to tell from the number whether it's associated with a mobile or landline service.Then to confuse matters, there are VoIP service numbers, DID numbers, Non-dialable SIP VoIP URIs, Skype Numbers, Emergency service numbers, FreeCall numbers, teleconference bridge numbers, and the list goes on!
This term stands for:-L - localA- AreaN- NetworkLand line are telephone lines, and has a voltage of 50 volts flowing in the wires, which connect the telephone set in the home to the nearest telephone exchange.The grey 4 core pvc cable usually have 4 individual wires that are coloured Orange, Sky Blue, Green and Brown, in it.Most times only the Blue and Orange wires are used. The Green and Brown acts as backup wires should the blue or orange wires are open circuited.Some telephone cables that are used with a PABX system inside a firm or company can have 6 or 8 or 12 individual wires, according to the requirements of the telephone system used.LAN lines can either use Belden co-axial cables or 12 core UTP - universal telephone plug, different fron the 4 core thinner telephone cables.Hope this clarifies the differences of the cabling used.Hope that helps answer your question or query. Have a nice weekend.