Paradyne 336x E1 manual Data Port LEDs, Dtr

Operation

			Table 3-4
			Data Port LEDs
Name	Color		Meaning
DTR	Green	Monitors the state of interchange circuit CD (CCITT 108/1, /2) ± Data Terminal Ready
		received from the synchronous data DTE.
		ON:	DTR is being asserted by the synchronous data DTE.
		OFF:	DTR is not being asserted.
TXD	Yellow	Monitors activity on interchange circuit BA (CCITT 103) ± Transmitted Data. This is the
		data sent from the synchronous data DTE to the data port on the E1 NTU.
		ON:	Ones are being received from the synchronous data DTE.
		OFF:	Zeros are being received from the synchronous data DTE.
		CYCLING:	Both ones and zeros are being received from the synchronous
			data DTE.
RXD	Yellow	Monitors activity on interchange circuit BB (CCITT 104) ± Received Data. This is data
		sent to the synchronous data DTE from the data port on the E1 NTU.
		ON:	Ones are being sent to the synchronous data DTE.
		OFF:	Zeros are being sent to the synchronous data DTE.
		CYCLING:	Both ones and zeros are being sent to the synchronous data DTE.
CTS	Yellow	Monitors the state of interchange circuit CB (CCITT 106) ± Clear-to-Send sent to the
		synchronous data DTE.
		ON:	CTS is being asserted by the E1 NTU.
		OFF:	CTS is not being asserted.
RTS	Yellow	Monitors the state of interchange circuit CA (CCITT 105) ± Request-to-Send received
		from the synchronous data DTE.
		ON:	RTS is being asserted by the synchronous data DTE.
		OFF:	RTS is not being asserted.

3360-A2-GB20-20 December 1996 3-7