Mocomtech CRS-300 operation manual EIA-232/422/V.35 Connector

CRS-300 1:10 Redundancy Switch	Revision 16
Connector Pinouts	MN/CRS300.IOM

6.2TMI User Data Connectors

6.2.1EIA-232/422/V.35 – DB-25F Connector (CRS-316)

TMI User Data Interface connector

Table 6-4indicates the pinout for the DB-25F TMI User Data Interface connector (RS232/422/V.35): J2 on the CRS-316.

Table 6-4. EIA-232/422/V.35 Connector

	Pin	Generic Signal Description		Direction	EIA-422/	V.35		EIA-232		Circuit No.
					RS 530
1		Shield	-		Shield	FG		AA	101
2		Transmit Data A		DTE to Modem	SD A	SD A		BA	103
3		Receive Data A		Modem to DTE	RD A	RD A		BB	104
4		Request to Send A /		DTE to Modem	RS A	RS A
		Ready for Receiving A
6		DCE Ready A		Modem to DTE	DM_A	DM_A
7		Signal Ground	-		SG	SG		AB	102
8		Receiver Ready A		Modem to DTE	RR A	RLSD *		CF	109
9		Receive Clock B		Modem to DTE	RT B	SCR B	-		115
10		Receiver Ready B		Modem to DTE	RR	B	-		109
11		Transmit Clock B		DTE to Modem	TT B	SCTE B	-		113
12		Internal Transmit Clock B		Modem to DTE	ST B	SCT B	-		114
14		Transmit Data B		DTE to Modem	SD B	SD B	-		103
15		Internal Transmit Clock A		Modem to DTE	ST A	SCT A		DB	114
16		Receive Data B		Modem to DTE	RD B	RD B	-		104
17		Receive Clock A		Modem to DTE	RT A	SCR A		DD	115
19		Request to Send B /		DTE to Modem	RS B	RS B
		Ready for Receiving B
22		DCE Ready B		Modem to DTE	DM_B	DM_B
23		Not Used
24		Transmit Clock A		DTE to Modem	TT A	SCTE A		DA	113

Notes:

1.Receiver-Ready is an EIA-232-level control signal on a V.35 interface.

2.'B' signal lines are not used for EIA-232 applications.

3.For X.21 operation, use the EIA-422 pins, but ignore Receive Clock if the modem is DTE, and ignore Transmit clocks if the modem is DCE.

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