[asterisk-users] IAXy device

[Matthew Fredrickson]

Mojo with Horan & Company, LLC wrote:
> Sean Dennis wrote:
>> bilal ghayyad wrote:
>>   
>>> Hi All;
>>>
>>> I have been chocked just when I saw some posts talking
>>> about how much the IAXy is bad :) - 
>>>
>>> So I would like to ask, did any one try it later and
>>> wether it is good or not? I am asking this because I
>>> need to use it as it is NAT Transparent (as I read
>>> also, and I did not try it to see how much it is
>>> transparent).
>>>
>>> What about codec? Why it is only support g711 and does
>>> not support compressed codec? And what about the IP
>>> address and the DNS usage and the DDNS usage?
>>>
>>> What main porblems contain and any advise?
>>>
>>> Regards
>>> Bilal
>>>
>>>
>>>       ____________________________________________________________________________________
>>>   
>>>     
>> The device has no echo cancellation and sounds horrible (lots of echo) 
>> on about half of the analog phones I tried it on.  I wouldn't recommend 
>> it unless you absolutely need IAX. It's also very expensive for a 1 port 
>> ATA.
>>
>>
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> 
> Echo may be the result of latency on the network.  I've not had any echo 
> problems that I remember with my IAXy and I make ten calls a day, five 
> days a week, for the last few years, to all sorts of numbers/areas.  I 
> know that this isn't representative of typical business use, but 
> residential use, but I've been using in my business and have never been 
> disappointed :)
> 
> I will agree that's is fairly expensive, but I WOULD recommend it to 
> people who are on the go often. After setup, it really is plug-n-play IMO.

Just to put out some official word on the matter, the IAXy does indeed 
have some echo cancellation built in.  It has to since it interacts with 
a phone via a 2 wire to 4 wire conversion with a hybrid.

-- 
Matthew Fredrickson
Software/Firmware Engineer
Digium, Inc.