The modem is a peripheral that converts a digital signal containing audio data to another, and vice versa, in order to send and receive data through any means to support such signals as the phone line. This enables the computer to communicate with others who are further away. Its name comes from the union of the letters MOdulator-DEModulator, because technically, is the name given to the conversion of the signal. Can be internal (as ISA card) or external case that connects to a computer via serial port. The salient characteristics is the speed at which data transmission takes place, that increases with advancing technology. A modem of 33,600 bps (bits per second), is capable of transmitting data at this speed, which gives results in about 4,200 bytes per second (divided by 8). Generally support the standard working mode Fax, allowing you to send a document stored on your computer to a regular fax and receive. Some models have the voice module, which enables the treatment of this to use the computer as an answering machine or voice mail. The modem has a jack for phone line and another to connect your phone, so you do not have to install an additional hub.
external type. Installation:
The external modem, as I said before, is connected to a serial port using a cable that comes with it. Must also be connected to a power source, for which there is a small external power supply, also called power adapter, and finally to the telephone line, and if applicable, the telephone, we will have disconnected from the line to insert the modem. Once this is done, what remains is to install the software drivers, but if you have Windows 95, may not be necessary, because this already includes a list of drivers for most common modems.
internal type. Installation.
The internal modem must be installed inside the computer as one more card. In this case requires no food, because the modem gets it's own computer. Like the external type, is connected to the telephone line and telephone, and software drivers are installed. This modem will be detected by the computer as a serial port again, and interrupts used by the serial ports are IRQ4 for COM1 and COM3, and IRQ3 for COM2 and COM4. The internal modem is detected as COM3 or COM4, \u200b\u200band according to their own (with or without jumpers) will attempt to use an interrupt That should not be equal to one already used. The booklet that accompanies the modem usually list the possible configurations and how to do them, either by jumpers or by software if the card is a PLUG AND PLAY.
Possible problems
The external modem, no problem, unless it is faulty software or drivers that have not been installed correctly. Of course, we have the good operation of the serial port used (which will usually COM2, COM1 and the mouse will go, although nothing prevents the other way around), and the correct choice of speed because the modems support more than one. There are few cases in which, once installed and made the connection between two computers, the modem disconnects frequently due to telephone line noise.
internal modem, poses the same problems any other card interrupts, but with the mentioned above, which avoids using the external modem.
User-agent: Mediapartners-Google * Disallow: computers, computers, training, repair, oracle, word, IP TELEPHONY, exel, shortcuts, programming, office, hard drives, memory, motherboard, drivers, programs, software, free downloads messages to phones, lonelygirl15, computers, computers, training, repair, oracle, 
0 comments:
Post a Comment