| ??? 02/11/07 19:50 Read: times |
#132548 - Voice Responding to: ???'s previous message |
This is a little 4-in-1 security system i am implementing that i think is quite common nowadays. I have successfully implemented the sensor and alarm section and the enhancement that i want to implement is to cause the system to dial up automatically to the pre-set telephone number (e.g: house owner) to alert him/her. This alert can be in form of recorded voice message using an ISD chip. However, since i do not have an ISD chip with me now, the only way i can test the voice/audio transmission is by using the microphone as the input. It is just for testing purpose to make sure that the most basic function (i.e : dial up using DTMF -> detect receiver off-hook -> transmitting voice -> hang up) is working properly. |
| Topic | Author | Date |
| Interfacing 8051 to Voice Modem | 01/01/70 00:00 | |
| DTMF | 01/01/70 00:00 | |
| 56k Modem vs MT8880+TEA1062 | 01/01/70 00:00 | |
| external modem and voice? | 01/01/70 00:00 | |
| It's a voice modem | 01/01/70 00:00 | |
| Interfacing to modem | 01/01/70 00:00 | |
| Voice | 01/01/70 00:00 | |
| Line Interface | 01/01/70 00:00 | |
| Thanks for the head-up | 01/01/70 00:00 | |
| RS232 + AT commands? | 01/01/70 00:00 | |
| http://members.aol.com/cpu8052/modem1.html | 01/01/70 00:00 | |
| Rgd the schematic | 01/01/70 00:00 | |
| Yup, just be carefull... | 01/01/70 00:00 | |
| Even better! | 01/01/70 00:00 | |
| Heads up on the schematic | 01/01/70 00:00 | |
| Will do, big thanks | 01/01/70 00:00 | |
| Unusable code? | 01/01/70 00:00 | |
| Code is usable. (Modem1.asm) | 01/01/70 00:00 | |
| So you should know better! | 01/01/70 00:00 | |
have you not heard of 'reading the manual'? | 01/01/70 00:00 | |
| A Project of two halves! | 01/01/70 00:00 |