I am looking for someone who can tell me if such solution exists, if
exists where. If it does not exist, I am looking for an answer to who
is the best to reliably provide such a solution.


I need to set up a system to do the following:

1.	Receive phone calls and record voice messages over an hour long
form hundreds of unique and repeating callers having in average 10-20
callers online at any given time.
2.	When accepting a phone call, play a common greeting, then ask for a
code (several digits, like a PIN number or a password, like 1234).
Then play back custom greeting for each caller, usually a pre-recorded
name of that caller, so he would know for sure that he did not mistype
someone else?s number by mistake.
3.	While recording let the caller to rewind back and forth, then to
re-play to listen to what he said at any moment of the recording, then
re-record from any point etc.
4.	Record (or convert) messages into MP3 or similar format so that
compression would make files  1/10 of the size of standard WAV format
(or better)
5.	Save messages from each caller into a folder with the same name as
their code (several digits, like a PIN number or a password, like
1234)
6.	Ability for the caller to start a new file without re-dialing.

I already have such a system. It consists of software and hardware
collection from many different vendors and it is really hard to
maintain and to make scalable.

Hardware: I currently use a Windows 2003 Server with analog phone
input cards for a total of 24 ports. I also have 24 regular phone
lines coming into the server.

What I would like to have:

Hardware: 
I would like to get rid of all analog stuff, connect to some VoIP
provider who would terminate phone lines for me and only send me IP
traffic. Then I am not limited anymore to the number of PCI slots,
ridiculous old and very expensive phone cards etc. In order to expand
I would order more lines from my VoIP provider without touching any of
my own hardware. Not to mention that VoIP phone numbers will cost much
less than regular phone lines.

OS:
Preferably Windows, not Linux for some other reasons not mentioned
here. But I would consider very elegant Linux solutions too.

Software: 
Preferably one package that does it all rather than having lots of
programs from different vendors working together. I?d like the package
to work either with VoIP where no phone hardware is required or at
least to have software that would work with most phone cards.

And all that for $5-, all I can say is "Good Luck"!

Unfortunately I think you did not understand the question. 

The question in the very first paragraph says that the payment is not
for providing the solution. It is for telling me if you know about
one's existence of the top of your head. Or if you know someone who is
in expert in these things and you have heard of something similar that
they were involved in. $5 - not bad for a few seconds typing a name or
a web site address of the top of your head.

Or if you happen to be one who can work it out to just say "Yes, I can
do it." So $5 paid to YOU for giving YOU access to a customer who may
hire you to do the real thing without asking you anything in return
other than to confirm that you are the expert who is capable of
grasping it. How many people have paid you before for looking at your
resume?

There is such a beast. It's called WinScribe. Go to www.winscribe.com
and email them as it can do everything on your list plus heaps more.

Look into Asterisk, for Linux.  If you don't like Linux, keep using
your win2k3 solution.

I second that, you should be able to do this with Asterisk, I cannot
think of any other system that will satisfy all the requirments.
Now, as far as price, from what features Asterisk allready has
built-in, it would require substantial hours of additonal development.
But, it cna surly be done in Asterisk.

Good Luck!

Thank you everyone who answered. So who do I pay and how?

This is all possible with Cisco hardware and software.
Cisco provides end to end VoIP solutions. They make incredible VoIP phones.
http://www.cisco.com/en/US/products/hw/phones/ps379/index.html

The phone system is software based running on Windows Server 2000 and
2003 and is called "Cisco Call Manager".
http://www.cisco.com/en/US/products/sw/voicesw/ps556/index.html

The answering system is also software based running on the same
platform like the above and is called "Cisco Unity". There is
scripting that could be done to achieve all the other required
features that you mentioned.
http://www.cisco.com/en/US/products/sw/voicesw/ps2237/index.html

They have software/hardware products to cover even the most complex
VoIP requirements.

If this rises more questions let me know.

In addition to Asterisk and Cisco, I would suggest looking at a few
other vendors.  Aspect and Genesys are good choices and both companies
can provide solutions to your needs with their own hardware.  Also,
telco companies like Time Warner, MCI, etc. are capable of providing
you the IP communications you are looking for.  Good luck.

You need Skype ...
with Spype you can phone for free on Internet,
to record phones and convert to mp3 you can use Nero Burning rome wave
editor, than cd-ex to translate wav in mp3 (Nero can save only 30 mp3
than you have to buy program.. )

As some people said, Asterisk could probably do it.  There is a
special distro built on CentOS made specifically to run an Asterisk
PBX http://asteriskathome.sourceforge.net/