[asterisk-users] Dragging the dialup customers along, possible?

[Kevin P. Fleming]

On 08/29/2011 10:32 PM, C F wrote:
> On Mon, Aug 29, 2011 at 4:32 PM, Cary Fitch<caryf at usawide.net>  wrote:
>>
>>
>> -----Original Message-----
>> From: asterisk-users-bounces at lists.digium.com
>> [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of C F
>> Sent: Monday, August 29, 2011 3:18 PM
>> To: tech at ewebforce.net; Asterisk Users Mailing List - Non-Commercial
>> Discussion
>> Subject: Re: [asterisk-users] Dragging the dialup customers along, possible?
>>
>>  From what you are asking it appears that you are trying to run similar
>> to a fax (modulation and demodulation) over VoIP.
>> Try again, the fact that you succeeded twice was pure luck, and as far
>> as I understand that didn't even work out.
>> Switch back to TDM. Your dial up modems want that magic thing called
>> timing and no jitter that only TDM will give you.
>>
>> ===========================
>>
>> This is more of a whimsical statement than a scientific one, but I would
>> think in today's world, there would be a real small box that would take in
>> IP and put out TDM with good timing with a moderate buffering window.
>> Obviously, the IP has to actually get to the box in a timely fashion, like
>> "today" , but a TDM circuit has to be "up" also.
>>
>> A box that would take in IP data..., look for valid "ascii", and otherwise
>> put out TDM modem tones with no data content for "1 second" and then pick up
>> the data as it catches up.
>
> So you want to develop the equivalent of T.38 for dial up?

It already exists; it's called V.150.

-- 
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
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