[asterisk-users] Asterisk as an analog call recording solution (was: Recording outbound analog calls with X100P)

[Time Bandit]

> Thank you for the confirmation and the warning about disk space.
>
> Now I need to decide between the Sangoma A20202 and the Digium TDM2411.
> I'm leaning heavily toward the Sangoma card for the following reasons:
>
> - It doesn't require a 12V power connector for the operation of FXS modules.
Maybe, never used it so I can't confirm, but I doubt it since I'm
wondering where it would pull the needed power for the FXS (from the
PCI bus ???)

> - It is compatible with 5v and 3.3v PCI buses.
> - It shares PCI interrupts properly.
> - It maintains a single synchronous PCI interface for all FXO/FXS ports
> (additional daughterboards are added to a backplane bus connector)
> - It has a better form factor.
Depends, if you want to put more than 4 ports in a 1U server, should
be easier to put a full-length TDM2400P than try to squeeze 2 A200
cards side-by-side.

> - It is less expensive.
>
> These are rather compelling reasons, but I'd still like some feedback
> from the list prior to making a purchase.
I've seen lots of good comments on the Sangoma cards and on their
support. I never used the A200 but I can confirm that Sangoma say they
support FAX calls, while Digium say that the TDM2400P was only
designed for voice. YMMV

> Both cards offer hardware echo cancellation for an additional cost.  Do
> the benefits of hardware EC justify the expense in this scenario?
Usually when you bridge 2 ZAP channels you don't need echo cancel. I
would buy without the echo canceller and if you really have echo that
you can't get rid of with software echo can, you could add the
hardware echo can after. With Digium's TDM2400P you can add the echo
can after. With Sangoma, I think you have to exchange the card for one
with it. You should call Sangoma to confirm
(http://www.sangoma.com/main/contact)

> Thank you,
You're welcome