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Other Stuff That Has Little To Do With PLA => General Discussions => Topic started by: Amok on February 28, 2007, 09:57:01 PM

Title: AT&T 123A tone dialer internals
Post by: Amok on February 28, 2007, 09:57:01 PM

The whole thing seems to be driven by a single IC, accompanied by a capacitor and some SMD stuff too.  No crystals like on the Radio Shack models.  (EDIT: legend said that the blue thing near the IC is a crystal, and it is!)

(http://i17.photobucket.com/albums/b72/DanAdamKOF/IMG_1992.jpg)
(http://i17.photobucket.com/albums/b72/DanAdamKOF/IMG_1987.jpg)
(http://i17.photobucket.com/albums/b72/DanAdamKOF/IMG_1988.jpg)
(http://i17.photobucket.com/albums/b72/DanAdamKOF/IMG_1989.jpg)
(http://i17.photobucket.com/albums/b72/DanAdamKOF/IMG_1990.jpg)
(http://i17.photobucket.com/albums/b72/DanAdamKOF/IMG_1991.jpg)

If anyone wants me to get the specific numbers off the SMD stuff let me know.

Title: Re: AT&T 123A tone dialer internals
Post by: Tachyon on February 28, 2007, 10:01:14 PM

That's nifty to be sure, but my mp3 player does me well nowaday, thankee sai.

Title: Re: AT&T 123A tone dialer internals
Post by: legend813 on February 28, 2007, 10:29:13 PM

The blue thing at X1, is not a capacitor it is a crystal. What iz its value?

Title: Re: AT&T 123A tone dialer internals
Post by: Amok on February 28, 2007, 10:31:50 PM

Quote from: legend813 on February 28, 2007, 10:29:13 PM

The blue thing at X1.

Yep, that is indeed a crystal.  And it's the same value as the one found in Radio Shack tone dialers!

Title: Re: AT&T 123A tone dialer internals
Post by: splynt0r on March 01, 2007, 01:29:52 AM

Thats quite a nice model. My dialer doesn't do redial. But it came in a leather case :D

Title: Re: AT&T 123A tone dialer internals
Post by: kelsokid18 on March 01, 2007, 01:11:34 PM

What the hell good does a tone dialer do ya.  Boxing is dead.  Or is it?  Red Boxing is like Elvis.  Is it dead, or is it alive.

Title: Re: AT&T 123A tone dialer internals
Post by: Tachyon on March 01, 2007, 02:12:52 PM

A tone dialer does ya nothing, unless the keypad of your phone has shit on it and you want to dial a number. A redbox on the other hand, is still useful in several circumstances.

Title: Re: AT&T 123A tone dialer internals
Post by: splynt0r on March 02, 2007, 04:54:32 AM

In Luxembourg the phones on the motorway only have the keys 1 2 and 3, so they're useful there.