This attribute shall indicate the number of octets in an PSDU, below which an RTS/CTS handshake shall not be performed, except as RTS/CTS is used as a cross modulation protection mechanism as defined in 9.10. An RTS/CTS handshake shall be performed at the beginning of any frame exchange sequence where the PSDU is of type Data or Management, the PSDU has an individual address in the Address1 field, and the length of the PSDU is greater than this threshold. (For additional details, refer to Table 21 in 9.7.) Setting this attribute to be larger than the maximum PSDU size shall have the effect of turning off the RTS/CTS handshake for frames of Data or Management type transmitted by this STA. Setting this attribute to zero shall have the effect of turning on the RTS/ CTS handshake for all frames of Data or Management type transmitted by this STA. The default value of this attribute shall be 65535.