Specifies transmission enabling.
path - Bit 0 for path transmit. When this bit is set
indicates path transmit is enabled; otherwise
path transmit disabled.
idlesignal - Bit 1 for idlesignal transmit. When this bit
is set idlesingal transmit is enabled; otherwise
idlesignal transmit disabled.
testsignal - Bit 2 for testsignal transmit. When this bit
is set testsignal transmit is enabled; otherwise
testsignal transmit disabled.
The value of this object defaults to zero, indicating that none of FDL
transmit methods are enabled.