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Frequently Asked Questions
Question 6: What are Handshake Lines?
Answer: Handshake Lines are used to control the direction of data flow between DTE and DCE. They are: RTS (Request to Send) - Asserted by DTE to prepare DCE to receive data. CTS (Clear to Send) - RTS Acknowledgment by DCE to allow DTE to transmit. DTR (Data Terminal Ready) - Asserted by DTE to indicate that it is ready to be connected. DSR (Data Set Ready) - Indicates an active connection by DCE. DCD (Data Carrier Ready) - Used by modem when a connection has been established with remote equipment. RI (Ring Indicator) - Used by the modem to indicate a ring signal from telephone line
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