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It is possible to use a modem without the DCD signal, however the only way for the computer to know that a connection is disconnected is by the modem transmitting the words "NO CARRIER" over the data lines. Because the words "NO CARRIER" are also a message that could appear in the context of a normal data session (for example, if typed by a ...
Cable modem termination system A cable modem termination system ( CMTS , also called a CMTS Edge Router ) [ 1 ] is a piece of equipment, typically located in a cable company's headend or hubsite, which is used to provide data services, such as cable Internet or Voice over IP , to cable subscribers.
Xfinity Voice (formerly Comcast Digital Voice) is a Voice Over IP cable telephony service that was launched in 2005 in some markets, [75] and to all of Comcast's markets in 2006. Comcast's older service, Comcast Digital Phone, continued to offer service for a brief period, until Comcast shut it down around in late 2007. [ 76 ]
The modem connects to a single computer or router, through an Ethernet port, USB port, or is installed in a computer PCI slot. The more common DSL router is a standalone device that combines the function of a DSL modem and a router , and can connect multiple computers through multiple Ethernet ports or an integral wireless access point .
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Blinkenlights on the NSA's FROSTBURG supercomputer from the 1990s Typical LED pattern of a Thinking Machines CM-5. The Connection Machine, a 65 536-processor parallel computer designed in the mid-1980s, was a black cube with one side covered with a grid of red blinkenlights; the sales demo had them evolving Conway's Game of Life patterns.
As modem speeds increased, the fixed delay grew in proportion to time needed to send the packet. For instance, at 2400 bit/s the packets took only 0.55 seconds to send, so if the <ACK>/<NAK> still took 0.2 seconds to make it back to the user's machine, the efficiency has fallen to 71%. At 9600 bit/s it is just under 40% – more time is spent ...
Orange Livebox is an ADSL wireless router available to customers of Orange's Broadband services in Kenya, Guinea, France, Tunisia, Spain, Jordan, the Netherlands, Switzerland, Poland, Belgium, The United Kingdom , Mauritian partner MyT, Lightspeed Communications in Bahrain and Orange Botswana.