[Asterisk-Users] How can i test a modem with Asterisk?

[Julio Arruda]

Fabrício Zimmerer Murta wrote:
> Oh, friend... I have realised just yesterday that's impossible to use
> regular modems (say hayes/v90 33.6 or 56k) to plug asterisk to the world. I
> can't figure out why. But they simply don't support it.
>   If you want to use your isdn modem to plug * to the world, it's OK.
> Else... Only just one modem kind is supported and, surprisingly it's a
> winmodem, from Intel. It's Intel 537 w/ chipset MD32000. That's the sole
> only modem supported to be used as a * node to link to the PSTN (telco) and
> start to make calls from within the VoIP network (or whatever that passes
> throught asterisk).
>   I'm thinking in sending a mail for asking WHY THE HELL they can't support
> bare modems, even if they have voice support (I have an USR w/ voice, 56k
> and ISA kind, and I simply can't use it for testing an * box).
>   Also, I think that with that computer you can gladly test you *
> implementation as long as you don't use much concurrent connections.
> 
> - Fabrício

Google is your friend, as well as the wiki, don't leave home without it 
: :-)

http://www.voip-info.org/tiki-index.php?page=Asterisk%20hardware

As someone else mentioned, the winmodem will pass all the info to the 
host CPU, while a "regular" modem will not.

In .br you will find vendors for these cards, from what I understand, 
few have pointed even some stores (SP, St Efigenia) that sell these.
 From what I can see in the asterisk-br, just found a RJ address:

"LE Compustore
Placa Modem Intel com chip MD3200
Procurar : Aline Compustore 21 2262-7169
Av. Rio Branco 156 Loja 301"

On the Why the heck :-) part, I guess that you can try to fund any other 
development you may need, keep in mind that, while the "Hayes/V90, USR 
w/voice" and etc would not work, maybe others winmodems can have a 
driver developed ?
I've tested (and keep using at home) the Sipura 3000, seems to work well 
enough, and I may even get rid of my FXO card, just need to understand 
clearly the timing gotcha x conference (the FXO does timing to merge the 
audio streams AFAIK).