[Cialug] Courier V.everythying modem

[David Bierce]

I'm not sure about using DSL with its latency and jitter, but I have inbound and outbound faxing on my system using asterisk with ~80% success rate on with G711 at 14.4k and +95% when it can use T.38.  When I limit the datarate to 9600 baud G711 is more than 90% successful.

Granted, the line between me and my provider is far, ~30ms, with no meaningful jitter, I couldn't imagine trying to do that on a DSL line or Cable modem.

There are fax services like myfax and eFax that work great.

 
On Feb 23, 2011, at 8:19 PM, Don Ellis wrote:

> On Tue, Feb 22, 2011 at 9:50 PM, Zachary Kotlarek <zach at kotlarek.com> wrote:
>> 
>> On Feb 22, 2011, at 9:42 PM, Scott Prader wrote:
>> 
>>> Now why would you want to go and do a silly thing like that?  USR Courier modems are still supported by Linux and BSD. ;)
>> 
>> 
>> And I still use one.
>> 
>> Some of them support Class 2.0/2.1 faxing. I did not have very good look with Class 1 fax-modems + USB->serial conversion. I'm guessing it's because Class 2.x systems don't have any timing-sensitive host<->modem communications, but I didn't actually do much research to isolate the root cause once I found something that worked.
>> 
>> So that's one potential use, if you still use faxes.
> 
> However, if you're using VOIP for your land line, faxes don't work.
> Need alternate fax methods, which don't use fax modems.
> 
> --Don Ellis
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