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Author Topic: AT&T 123A tone dialer internals  (Read 3178 times)

Offline Amok

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AT&T 123A tone dialer internals
« 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!)








If anyone wants me to get the specific numbers off the SMD stuff let me know.
« Last Edit: March 01, 2007, 10:33:03 AM by Amok »
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Offline Tachyon

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Re: AT&T 123A tone dialer internals
« Reply #1 on: February 28, 2007, 10:01:14 PM »
That's nifty to be sure, but my mp3 player does me well nowaday, thankee sai.
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Offline legend813

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Re: AT&T 123A tone dialer internals
« Reply #2 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?
« Last Edit: February 28, 2007, 11:34:32 PM by legend813 »
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Offline Amok

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Re: AT&T 123A tone dialer internals
« Reply #3 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!
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Offline splynt0r

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Re: AT&T 123A tone dialer internals
« Reply #4 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
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kelsokid18

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Re: AT&T 123A tone dialer internals
« Reply #5 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.
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Offline Tachyon

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Re: AT&T 123A tone dialer internals
« Reply #6 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.
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Offline splynt0r

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Re: AT&T 123A tone dialer internals
« Reply #7 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.
« Last Edit: March 02, 2007, 10:08:44 AM by splynt0r »
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