[Asterisk-Users] MultiBRI in Australia - found one - maybe

[Craig Guy]

We went to kernel 2.6.15, and at the same time went to mISDN 0.3.0 rc25, we 
haven't had any lockups but users are reporting dropped calls. 
Unfortunately for us this means dropping chan_mISDN in favour of the Cisco 
router containing BRI cards and then SIP from the Cisco to Asterisk.  It may 
still be possible to use chan_capi with the mISDN drivers for the Drayteks 
but for us we've run out of time which is a bit of a bummer.  I believe the 
problem is in chan_mISDN which is admittedly still an experimental driver at 
this stage with release candidates every few days for the past couple weeks.

I'm still interested to know how you guys get along with these adapters.  As 
I said, I think the problem is within chan_mISDN at this stage rather than 
in the USB adapters, so maybe using chan_CAPI on top of mISDN hardware 
drivers or using chan_vISDN would be the way to go until chan_mISDN matures.

Craig

----- Original Message ----- 
From: "James Harper" <james.harper at bendigoit.com.au>
To: "Asterisk Users Mailing List - Non-Commercial Discussion" 
<asterisk-users at lists.digium.com>
Sent: Monday, March 13, 2006 3:16 PM
Subject: RE: [Asterisk-Users] MultiBRI in Australia - found one - maybe


>
> Got my 2 dreytek adapters today...
> Dropped them on to my test system.  After wadding thru my Memory of
how to
> setup mISDN, I had it up and running within about 2 hours.

You might be receiving an email from me shortly then if I get stuck. If
it wasn't for these annoying public holidays (Labour day in Victoria)
mine would probably have arrived today too :)

> Both of them operating in ptmp with no echo cancel turned on at this
> stage.
> Seems to be happy.

That's quite comforting for initial testing.

Could you try some faxing?

And is there any way to measure latency with some hard figures, maybe by
use of a repeater? Maybe something like this:

Echo measurer -> BRI 1 -> BRI2 -> echo responder.

Where the measurer dials the responder, sends out a ping, and measures
the delay in the response.

I find it hard to believe that any USB induced latency could be
measurable in milliseconds...

> Will drop them onto my local production box next week and see how we
go :D

Let us know!

Thanks

James

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