ZyXEL Communications omni series user manual ATX0, ATX1, ATX2 ATX3 ATX4

Command	bit	dec	hex	Function and description				Ref.
		8	8	According to CCITT (see also				&S1
				S44.4, S41.5).
	4	0	0	CD always On.				&C0
		16	10	CD tracks presence of data				&C1
				connection (see also S38.3).
	6-7	0	0	Assume DTR always On.				&D0
		64	40	108.1, DTR Off-On transition				&D1
				causes dial of the default
				number.
		128	80	108.2 Data Terminal Ready,				&D2
				DTR Off causes the TA to hang
				up and return to command
				state.
		192	C0	108.2, DTR off causes the TA				&D3
				to hang up and reset the TA to
				profile #0 after DTR dropped.
S23=	bit	dec	hex	Bit mapped register.				+105
	0	0	0	Command echo disabled.				E0
		1	1	Command echo enabled.				E1
	2	0	0	Insertion is not allowed during
				a phone call.
		4	4	Insertion is allowed during a
				phone call.
	3-5	0	0	ATX0	(See result code table).
		8	8	ATX1	dec	hex	AT
		16	10	ATX2	40	28	X5
		24	18	ATX3	48	30	X6
		32	20	ATX4	56	38	X7
	6	0	0	Display result code in numeric				V0
				format (see S35.7).
		64	40	Display result code in verbose				V1
				format.
	7	0	0	TA returns result code.				Q0

130 Status Registers and Result Codes