| ??? 02/24/08 15:26 Read: times |
#151367 - This Is Why... Responding to: ???'s previous message |
This is why the typical broader view implementation used a bandpass filter to detect presence of frequencies in the general range of the tones and then uses firmware to detect the cadence of the tone. The cadence is as much an indication of the CP state as the tone frequency itself.
Michael Karas |
| Topic | Author | Date |
| call progress tone detection by MT8880C | 01/01/70 00:00 | |
| Before You Start - The usual warnings | 01/01/70 00:00 | |
| The MT8880 cannot detect all possible CP tones | 01/01/70 00:00 | |
| This Is Why... | 01/01/70 00:00 | |
| Do I have this right? | 01/01/70 00:00 | |
I did not look at this data sheet.... | 01/01/70 00:00 | |
| still i don\'t know what to do | 01/01/70 00:00 |