Vanguard Managed Solutions 6500 PLUS installation manual Function/Signal Pin, Name Position

EIA 232-D Signals (Standalone, Modulus 8/18, and 9/21 Enclosures)

Pin		DCE	Function/Signal	Pin	DTE	Function/Signal
		Position	Name		Position	Name
1	---------------		Shield/Frame Ground	1	---------------	Shield/Frame Ground
2	<-------------		TXD	2	------------->	TXD
3	-------------	>	RXD	3	<-------------	RXD
4	<-------------		RTS	4	------------->	RTS
5	-------------	>	CTS	5	<-------------	CTS
6	-------------	>	DSR	6	<-------------	DSR
7	---------------		Signal Ground	7	---------------	Signal Ground
8	---------------		DCD	8	<-------------	DCD
14	<-------------		DATA RESTRAINT	14	------------->	DATA RESTRAINT
15	-------------	>	TRANSMIT CLOCK	15	<-------------	TRANSMIT
			or V.54 Loop 3 *			CLOCK
16	-------------	>	STANDBY	16	<-------------	STANDBY
			INDICATOR			INDICATOR
17	-------------	>	RECEIVE CLOCK	17	<-------------	RECEIVE CLOCK
18	<-------------		EXTERNAL	18	------------->	EXTERNAL
			RECEIVE CLOCK			RECEIVE CLOCK
						or V.54 Loop 3 *
20	<-------------		DTR	20	------------->	DTR
21	-------------	>	V.54 Loop 2	21	------------->	V.54 Loop 2
22	<-----------	>	RI/TM *	22	NC	(No Connection)
24	<------------		EXTERNAL TRANS-	24	------------->	EXTERNAL
			MIT CLOCK			TRANSMIT
						CLOCK
25	<-------------		TEST MODE	25	<-------------	MAKE BUSY
* Pin assigned double function as follows:

Pin 15: Outputs TRANSMIT CLOCK if the port is configured for internal clocks. Otherwise it acts as a V.54 Loop 3 signal when connected to a modem.

Pin 22: Used as the Ring Indicator output if the port is configured to emulate a dial modem. For this to work properly, the RI/TM switch of the port must be set to RI. When the RI/TM switch is set to TM, this pin acts as an input, and the TM output from the attached modem (pin 25 on the modem) comes into the 6500 on this pin.

A-2 Cables