Carrier Access AB II manual FXS Lcfo

D4 (SF) Framing Format

	Ringing		0	0
Ground-start	LCF	LO (on hook)	0	1	0	1
signaling (FXO-
FXS)
	LCFO	LC (off hook)	1	1	1	1
	Ringing	RG (service	0	0	0	0
		request)
Ground-start	LCF	LO (on hook)	0	1	0	1
signaling with
RLCF (FXO-FXS)
	RLCF	LC (off hook)	0	1/0	1	1
	LCFO	RG (service	1	1	0	0
		request)
	Ringing		0	0
Loop-reverse-	LO	LCF	0	0	0	0
battery signaling
(DID) (DPO-DPT)
	LC	RLCF	1	1	1	1
Network-provided	LCF (on	LO (on hook)	0	0	0	0
reverse battery	hook)
(enhanced 911
apps) (DPT-DPO)
	RLCF (off	LC (off hook)	1	1	1	1
	hook)
E&M signaling	on hook	on hook	0	0	0	0
	off hook	off hook	1	1	1	1
Subscriber-	LO	LCF	0	1	0	1
provided loop-start
supervision (FXS-
FXO)
	LC	Ringing	1	1	0	0

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