| ??? 09/30/05 08:17 Read: times |
#101761 - DAA for MT8870 Responding to: ???'s previous message |
Reza, Tell us how you have interfaced MT8870 to telephone line? If it is transformer coupled, then the problem is not ground. If it is differentially coupled, or single ended with bridge then you must use isolated RS-232. |
| Topic | Author | Date |
| MT8870 & MAX232 Compatibility!!! | 01/01/70 00:00 | |
| Ground | 01/01/70 00:00 | |
| Unanimous! | 01/01/70 00:00 | |
| Earthing! | 01/01/70 00:00 | |
| Thanks! | 01/01/70 00:00 | |
| DAA for MT8870 | 01/01/70 00:00 | |
| Thanks Ijaz | 01/01/70 00:00 | |
| Schematic! | 01/01/70 00:00 | |
| To Ijaz | 01/01/70 00:00 | |
| Re: Schematic | 01/01/70 00:00 | |
| Thanks! | 01/01/70 00:00 | |
| Another Question! | 01/01/70 00:00 | |
| The answer is obvious! | 01/01/70 00:00 | |
| Erik,Andy,Ijaz,Russell | 01/01/70 00:00 | |
| Transformer in DAA | 01/01/70 00:00 | |
| Transformer in DAA | 01/01/70 00:00 | |
| Is relay a good choice! | 01/01/70 00:00 | |
| sure, but what would that accomplish? yo | 01/01/70 00:00 | |
| You'll need something like this : | 01/01/70 00:00 | |
| Thanks, | 01/01/70 00:00 | |
| congratulation! | 01/01/70 00:00 | |
| I have used this way too,Reza! | 01/01/70 00:00 | |
similar | 01/01/70 00:00 |