where do we use cross and standard cable
Ethernet crossover cable Intentionally crossed wiring in the crossover cable connects the transmit signals at one end to the receive signals at the other end. Many devices today support Auto MDI-X capability, wherein a patch cable can be used in place of a crossover cable, or vice versa, and the receive and transmit signals are reconfigured automatically within the devices to yield this desired result.
Verizon Fios As described in 2007, Verizon Fios services are delivered over a fiber-to-the-premises network using passive optical network technology. Voice, video, and data travel over three wavelengths in the infrared spectrum. Service is distributed by single-mode optical fiber that extends from an optical line terminal at a Fios central office to the neighborhood, where a passive optical splitter fans out the same signal to up to 32 fibers, thus serving up to 32 subscribers. At the subscriber premises, an optical network terminal (ONT) converts signals to the corresponding in-home copper wiring for telephone, television, and Internet access.[27] Some Fios installations use an Ethernet cable for data and coaxial cable for television, while others use the Multimedia over Coax Alliance (MoCA) protocol for both data and television over a single coaxial cable. Telephone service is provided over existing cabling in the premises.