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A null modem cable is a type of serial cable that connects two devices directly, allowing them to communicate without a modem. It typically links two computers or devices by crossing the transmit and receive lines, enabling data transfer between them. Null modem cables are often used for direct device-to-device communication in applications like data transfer, programming embedded systems, or connecting older hardware that relies on serial communication protocols.
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When is a null modem cable used?
To exchange data between two DTE devices
What is rollover connection?
Rollover cable (also known as Cisco console cableor a Yost cable) is a type of null-modem cable that is often used to connect a computer terminal to a router's console port
What is a null modem cable?
A null modem cable is a cable which connects two computers directly. The connection is made using serial interface and actually requires no modem or phone line. These connections can be useful for some legacy applications, however due to the availability of low cost networking equipment null modem connections are now rarely used.
What is the purpose of a null modem cable?
A null modem is a cable connecting two serial ports with the input and outputs and device control lines crossed over, so the input pin on one port is connected to the output pin on the other, and so on. It is also called a 'cross-over cable'. A null modem allows two computers to be connected together using their serial ports without using modems (hence null modem). If you used a standard ('straight') serial cable, the two inputs would be connected together, and the two outputs, and so on, so the computers would not be able to communicate. Modems have their data and control pins reversed internally, so a 'straight' cable is used between a computer and a modem.
What type og cabling is used for cable modems?
Coxial cable is used from the wall to the modem. From the modem to the computer an RJ-45, or ethernet, cable is used.
What cable is used to connect a modem and a switch?
cross cable
What type of cable and connectors are used to connect a modem to a phone port?
To connect a modem to a phone port, a standard telephone cable, often referred to as an RJ-11 cable, is used. The connectors on each end of the cable are RJ-11 connectors, which fit into the phone port on the wall and the modem. This type of connection is typically used for DSL modems that utilize existing telephone lines for internet service.
Db9 pinout null modem color code?
A DB9 null modem cable typically connects two serial devices directly without a modem. The pinout configuration commonly used is: Pin 2 (Transmit Data) connects to Pin 3 (Receive Data), and Pin 3 connects to Pin 2. Additionally, Pin 5 (Ground) is connected to Pin 5. In terms of color code, common wire colors are often black for ground, blue for transmit, and orange for receive, but these can vary by manufacturer, so it's essential to check specific cable documentation.
Which type of links are used for a connection between two DTE devices?
null modem
How does cable modem internet access relate to bandwidth?
To access the internet via broadband cable, you will need a cable modem. Bandwidth is used for transmitting the signals of the internet to and from your home, and the cable modem is in place to allow the signals to be sent and received.
What can one do with an Arris cable modem?
An Arris cable modem can be used to connect ones home entertainment system to cable, internet, and telephone. One can also set up a wireless access point in their home with a wireless modem.
What is the name of the port used by an Ethernet cable what is the name of the port used by dial up modem?
Ethernet cable is RJ 45. Dial-up modem is RJ 11
