To turn the electricity on or off, you open or close part of the circuit. To open or close a flashlight circuit, you simply throw a switch. In a burglar alarm, the switch detects the act of intrusion -- opening a door or window, for example. These sorts of alarms are divided into ...
The perpetrator can create a permanent splice into your wire, in which case you would be able to see the splice if you can trace the entire length of the wire. The perpetrator can clip in intermittently at a junction box. This is what a telephone repair person does when testing your line...
the vital piece of infrastructure on which the Net is built was already in place and had been invented back in the 1860s. I'm referring, of course, to thetelephonesystem. When computer networks began to take off in the 1970s, it was perfectly natural to use the telephone...
Surprisingly, a telephone is one of the simplest devices you have in your house. It is so simple because the telephone connection to your house has not changed in nearly a century. If you have an antique phone from the 1920s, you could connect it to the wall jack in your house and it...
Surprisingly, a telephone is one of the simplest devices you have in your house. It is so simple because the telephone connection to your house has not changed in nearly a century. If you have an antique phone from the 1920s, you could connect it to the wall jack in your house and it...
When installing telephone wiring into a new facility, EIA/TIA T586A is the standard to utilize. How the Wire Gets into a Residence Historically, telephone companies ran telephone wires above ground with telephone poles to make wire issues easy to repair. The wire itself is sourced at a telepho...
communications devices. What that means is that if the drug dealers' telephone calls or the terrorists' telephone calls can be intercepted, then so can the rest of ours, too. And I think we really need to ask: Should a billion people around the world be using devices that are wiretap ...
There are three different "flavors" of VoIP service in common use today: ATA -- The simplest and most common way is through the use of a device called an ATA (analog telephone adaptor). The ATA allows you to connect a standard phone to your computer or your Internet connection for use ...
" Those three short exclamations mark the moment when thetelephoneproperly came into being, thanks to Watson's brilliant colleague Alexander Graham Bell (1847–1922). Since that moment, a little over a century ago, the telephone has become one of the most commonplaceinventionsin the world. ...
Office Communicator 2007 provides "softphone" capabilities that allow your users to choose the USB devices they like and provides a rich end-user experience to make common call control features such as hold and transfer discoverable and easy to use. Users no longer need to remember telephone ...