CTS: Clear To Send
From Network Dictionary Wiki
Clear To Send (CTS) is a signalling message transmitted from the data communications equipment (DCE) indicating to the data terminal equipment (DTE) that it may begin data transmission. For example, a networking equipment such as IEEE 802.11 wireless station may send a CTS in response to an RTS (Request to Send) message. The CTS message silences all wireless stations in its vicinity to avoid collision and enables the sender of the RTS message to begin data transfer.
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