AT&T 555-230-894 manual September 1995 Issue 1 H-15

Synchronous 212AR Modem Option Settings

Table H-12. Option Switch Settings for Synchronous 212AR

Modem

Switch Setting

S1 Switch Contacts

Feature	Option	Description	1	2	3
Tip, Ring,	E*	OUT	O	--	--
Make Busy
Country Code	ZF*	ON	--	--	X

(CC)Indication for Analog Loop

									Switch Contacts
										S2						S5
					1	2	3	4		5	6	7	8	9	1		2
Speed Control		XK*	HS BUTTON		X	--	--	--		--	--	--	--	--
Interface-		YE	IN		--	O	--	--		--	--	--	--	--
Controlled
Make Busy/
Analog
Loop-CN
Transmitter		YD	EXTERNAL		--	--	O	X		--	--	--	--	--
Timing
1200-bps		YH*	SYNCHRONOUS		--	--	--	--		X	--	--	--	--	X		X
Operation
Character		YJ*	10-BIT		--	--	--	--		--	X	--	--	--
Length (Use
With YG)
Receiver		YK*	IN		--	--	--	--		--	--	O	--	--
Responds to
Digital Loop
Interface		XL	IN		--	--	--	--		--	--	--	X	--
Controlled
Remote Digital
Loop
									S3 Switch Settings
					1	2	3	4		5	6	7	8
Loss of Carrier		S*	IN		X	--	--	--		--	--	--	--
Disconnect
Receive Space		V*	IN		--	X	--	--		--	--	--	--
Disconnect
*	= Factory furnished		X	= Contact closed
O	= Contact open		--	= Contact not applicable

Continued on next page

September 1995 Issue 1 H-15