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a modem
a modem
Same device----> crossover cable Different device->Straight through cable
Replace all of the cable
You can not it must be through Broadband Internet Service with DSL or Cable modem. see tip and troubleshooting under related link
A printer
Assuming both devices are the same type of device (both computers, both routers, both switches, etc), a crossover cable is needed for this. A crossover cable will move the transmit pins of one device to the receive pins of the second device, and visa-versa.
It is needed because you need to reverse the signals of a transmit line to a receive signal line. This is what network connectivity devices do, such as hubs, switches, etc. If you aren't using a connection device then the cable has to do that job.
The ODU and IDU are connected through a cable called the IF cable. They are both needed for digital microwave communications.
fiberoptic cable
in put means that data goes through device from cable while out put means reverse of this.
The device is called a coaxial cable.