1. Home
  2. Electronics Design
  3. MT8880 to detect busy and connection estalishment

MT8880 to detect busy and connection estalishment

Hi,

I used MT8880 to dial a call. But I do not know how to detect busy and connection estalishment?

Thanks!

Reply to
dereklai2k
Loading thread data ...

Some of these chips (which can also receive DTMF) have a call progress mode. In this mode the call progress tones are filtered and presented as a digital signal on a output. If you send this signal through an RC filter, you can use a microcontroller to detect the rithm of the signal and determine which tone you are receiving. Bare in mind that it takes several seconds to determine the signal.

--
Reply to nico@nctdevpuntnl (punt=.)
Bedrijven en winkels vindt U op www.adresboekje.nl
Reply to
Nico Coesel

ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.