J jmb4370 New Member Dec 10, 2008 #1 The IC family from California Micro Devices like the CM8870 DTMF Receiver is listed as obsolete. What IC can also be used as a DTMF receiver / decoder (and is readily available)? Last edited: Dec 10, 2008
The IC family from California Micro Devices like the CM8870 DTMF Receiver is listed as obsolete. What IC can also be used as a DTMF receiver / decoder (and is readily available)?
P petrv New Member Dec 11, 2008 #3 I believe your ic is a clone of Mitel (now Zarlink) MT8870 which i believe is still in production.
audioguru Well-Known Member Most Helpful Member Dec 11, 2008 #4 Does anybody play with touch-tones (DTMF) signalling anymore?
P petrv New Member Dec 11, 2008 #5 Why not ? Throw in for example MT8808 and a microcontroller and you have a core of a small PBX just an idea ....
Why not ? Throw in for example MT8808 and a microcontroller and you have a core of a small PBX just an idea ....