A data communication system consists of.
A data communication system consists of DTE,DCE and Medium.
A modem is a typical example of data communications equipment. ... DCE generates internal clock signals, while DTE works with externally provided signals. Without employing a modem, the DCE and DTE can be connected through a crossable cable medium like a null modem for Ethernet or typical RS-232 serial line.
These can also be called tail circuits. A DTE device communicates with the data circuit-terminating equipment (DCE). The DTE/DCE classification was introduced by IBM. ... Usually, the DTE device is the terminal (or a computer emulating a terminal), and the DCE is a modem or another carrier-owned device.
A data circuit-terminating equipment (DCE) is a device that sits between the data terminal equipment (DTE) and a data transmission circuit. It is also called data communication(s) equipment and data carrier equipment. Usually, the DTE device is the terminal (or computer), and the DCE is a modem.