[Asterisk-Users] Which Wildcard?

Hugh Jackman hijackman at gmail.com
Tue Nov 8 02:34:12 MST 2005


Hi,

Digium have Wildcard for FXO/FXS connections (i.e., telephone lines)
and E1/T1 cards such as the TE110p. There're a few things you might
want to consider:

1) TE110p is much more expensive
2) it is too much for a "small shop". Concurrently supports upto 15
incoming and 15 outgoing calls (or 30 incoming calls). Hence, the
number of clients can be up to 100, depending on your service needs
and configuration.
3) you do need echo cancellation or your VoIP phone users will suffer.
The lastest Digium E1 card support hardware echo cancellation. The
builtin software echo cancellation is quite incapable!

Hope that helps!

H.

On 11/8/05, Dmitry Ivanov <dimss at telecentrs.lv> wrote:
> Hello!
>
> We consider purchasing Digium Wildcard for E1 connectivity. Wildcards
> are pretty expensive pieces of silicon for small shop like ours. And we
> have no previous experience with E1 communications.
>
> What Wildcard do we need? How can we estimate our needs? How many
> clients (approx.) can share one E1 in practice, for example?
>
> What about hardware echo cancelation? Do we really need it?
>
> Thanks!
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