The basic applications of this cable are: It is mainly used in simple data-transfer network connections.Ī serial data communication is directly made between two computers using the RS-232 serial cable. This communication method is temporarily used to make a connection between a laptop computer and a desktop device. Now, in our experiment we are not going to use any DCE to make the connection between the DTEs, we would be using a RS-232 serial cable. DCE is a device that sits between two DTEs, and communicates with it using the standards which is primarily RS-232. A DTE is a device, which communicates with DCE, and provides data communication control functions, which is to be executed according to the link protocols, by converting the user information to signals. Two DTEs (computers) can be interconnected with this specially designed cable without the use of DCEs (Data Circuit-terminating Equipment) i.e modem. When such a cable is employed, to establish a connection between two DTEs, both the DTEs are made to believe that, they are connected through modems. Read on to learn how to build a null modem cable.Ī null modem cable (RS-232 serial cable) is used when one needs to connect a DTE (Data Terminal Equipment) to another via their communication ports. Null modem cable is used to directly connect two systems, and establish an Internet connection between the computers.
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