vstudio3k
vstudio3k
Branch Unspecified
14 Sep 2008

Caller ID Identification with picbasic, help

Hi all,

My group is working on telephone remote control. We built a devices installed in telephone line from residential house that can turn on certain things around the house such as light, tv, etc. We have a few problem right now such as caller ID detection.

We can get signal and decode with (DTMF: MT8870) and microcontroller (PIC16F84A). Our device pickup the phone after 3 rings and able to turn on various things now. We are trying to write a code receive caller ID, so microcontroller can pickup the phone automatically, but we are not able to find any valuable information to finish it.

Please help us
vstudio3k

vstudio3k

Branch Unspecified
23 Sep 2008
I know US use HFK instead of DTMF. I installed one chip "HT9202C operate 4MHz" found from broken phone to use in our device. I captured some binary number (alot ex: 0000000011111110101101010) from pin DOUT, and I have no idea how to decode them. Our microcontroller operate speed chage to 20MHz. I am not able to decode these series numbers on first and second ring with speed operating 5 time faster than the HT9202C. How to decode them. Please help

datasheet HT9202C
https://doc.chipfind.ru/pdf/holtek/ht9202c.pdf

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