Hi Tamer,<div><br></div><div>Many thanks for your comments, really your comments are useful. And finally I think using dahdi instead of mISDN is better. <br><br><div class="gmail_quote">On Wed, Sep 21, 2011 at 3:10 AM, Tamer Higazi <span dir="ltr"><<a href="mailto:th982a@googlemail.com">th982a@googlemail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Am 20.09.2011 19:47, schrieb Gopal krishnan:<br>
<div class="im">> What is the difference between using mISDN for BRI and using Dahdi<br>
<br>
</div>mISDN was at 1st done for ISDN Services and channel driver as I know. It<br>
supported like call routing (switch based, not your side on the pbx level).<br>
<br>
<br>
> without mISDN?<br>
<br>
you can use DAHDI without ISDN, for other related telephony interfaces.<br>
Like analogue cards. and if there are other telephony hardware<br>
interfaces that has nothing common todo you can use it too.<br>
<br>
and genereal:<br>
DAHDI is the native digium hardware telephony interface. Beside mISDN<br>
you have the native support for an echo cancellor you could use.<br>
<br>
<br>
<br>
for example: oslec or the hpec (high performance echo cancellor) which<br>
you can't make use of it natively with mISDN.<br>
<br>
<br>
<br>
As long you have no hardware interface boards as PCI modules, and you<br>
connect only throug the network to your enddevices, there is no need to<br>
startup dahdi at all.<br>
<br>
end beside: dahdi is an extra service that starts up, mISDN is a channel<br>
driver you must activate in the modules.conf.<br>
<br>
<br>
Are all your question answered that far?!<br>
<br>
><br>
> Regards<br>
><br>
><br>
Tamer<br>
<br>
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