Nortel Networks 553-3001-211 manual Power supply, EIA signals supported, Dce Dte Eia

Page 492 of 894 NT7D16 Data Access card

Power supply

Be sure that all power requirements are met before installing the DAC. Operation may be affected by improper power and environmental conditions.

EIA signals supported

The DAC supports a subset of the standard signals. Only 8 leads can be brought through the backplane connector for each port, totaling 48 leads for each card slot. Table 160 lists the EIA signals supported on this card.

Table 160

EIA signals supported (RS-232-C)

	DB-25	Signal		DCE	DTE
EIA	Pin	abbreviation	Description	mode	mode
BA	2	TD	Transmitted Data	In	Out
BB	3	RD	Received Data	Out	In
CB	5	CTS	Clear To Send	Out	In
CC	6	DSR	Data Set Ready	Out	In
AB	7	GND	Signal Ground	—	—
CF	8	DCD	Carrier Detect	Out	In
CD	20	DTR	Data Terminal Ready	In	Out
CE	22	RI	Ring Indicator	Out	In

Note: RS-422 leads supported are: Tx (transmit) and Rx (receive).

553-3001-211 Standard 2.00 September 2004