[Techtalk] Does asterisk need a modem card?

[mgmonza at svalbard.freeshell.org]

On Wed, 17 Jun 2009, Daniel Pittman wrote:

> Date: Wed, 17 Jun 2009 16:29:12 +1000
> From: Daniel Pittman <daniel at rimspace.net>
> To: techtalk at linuxchix.org
> Subject: Re: [Techtalk] Does asterisk need a modem card?
> 
>
> OK.  *If* that will talk to a standard SIP server, which it probably will[1],
> then it should work fine with Asterisk.
>

I've tried it with a variety of VoIP providers, and it works with those.
If those are SIP servers, I should be OK.

> No, you don't.  You /do/ need a source for a 1000Hz clock tick, which can come
> from Zaptel supported hardware, or from the kernel RTC.  I use the later, in a
> machine that definitely has no modem cards, and it works fine.
>

Good to know.


> Generally speaking, a "generic" modem card isn't going to work with Asterisk
> anyhow.  A very limited subset of Intel software modems could be used as POTS
> adapters, but they are vanishingly rare.  Everything else is dedicated
> hardware.
>

Also good to know.

> Footnotes:
> [1]  ...but I am too lazy to Google it up and check.
>

Google is starting to scare me anyway.