Call Progress Tone Generation & Detection



	M-980-02P R3
	M-980-02S R3
	M-980-02T R3
	M-982-02P R4
	* M-982-02S R4
	* M-982-02T R4

	M-991 R1
	M-991-01SM R1


* Not Recommended for new designs. Contact local sales office for product availability AN-128: M-980 - Algorithm for Call Progress Signal Detection AN-129: M-991 - Call Progress Tone Generator AN-130: Call Progress Tone Standards AN-138: M-980 - Call Progress Tone Detector Applications