On Sat, 01 Apr 2006 07:48:32 +1000, Franc Zabkar
wrote:

On Tue, 28 Mar 2006 18:34:54 -0500, mm put
finger to keyboard and composed:

On Tue, 28 Mar 2006 04:10:17 -0500, "JANA" wrote:

Phones need 48 Volts DC with an in series of 600 to 800 ohm source. The ring
is 96 Volts at 25 Hz.

Thanks a lot.

For the answering machine, if it is a name brand, you should be able to get
the information about how to reset the remote code. If it is a fixed
uninique code, then you have a problem.

It is a fixed code. A friend of mine and I each bought one 21 years
ago, and the code was printed on the box, not on the bottom of the
unit that became more common. I wish it had been on the bottom; we
would still have it! This new one is from the wife of a friend, and
she stopped using it a couple years ago and has forgotten the code.

So you have another identical unit? Is it an analogue type, ie does it
use microcassettes rather than flash memory?

Microcassettes.

If so, then there may be
a small 8-pin serial EEPROM that stores the code and speed dial
numbers (?)

Not important, but it doesn't have a phone attached. That is one of
the reasons my friend doesn't use it anymore.

I will look for the EEPROM.

in which case you could swap the chip between the two
machines. You could also read the chips using a device programmer and
compare the contents, or you could simply duplicate a working chip.

*simply* duplicate? I don't think I can do that. ;-) But the rest
of it sounds possible. Thanks a lot.

- Franc Zabkar