3Com S330 manual DCD not used, see Out DCE cable

48CHAPTER 2: INSTALLATION

Table 16 Connector Pinouts for EIA530 DCE cable (60-pin Connector) to DB-25 Female

	Pin # on 60-pin	Pin # on DB-25	Direction (for
Signal Name	Connector	Connector	Serial Port)
Frame GND	46	1
Circuit GND	45	7
RTS	1, 2	4, 19	In
CTS	9, 10	5, 13	Out
DSR	7, 8	6, 22	Out
DCD (not used, see	5, 6	8, 10	Out
DCE cable)
DTR	3, 4	20, 23	In
LL (not used)	29	18	In
SD+	28	2	In
SD-	27	14	In
RD+	11	3	Out
RD-	12	16	Out
SCTE+	26	24	In
SCTE-	25	11	In
SCR+	24	17	Out
SCR-	23	9	Out
SCT+	13	15	Out
SCT-	14	12	Out
Shorting GR 1	47, 48, 49