[asterisk-users] OT - mISDN and B410P questions

[Darrick Hartman]

Oliver,

I have some comments, but am looking for a good answer to this as well.

1).  2.6.27 kernels to include a version of mISDN v2.0.  It's not as up 
to date as the full version on the mISDN.org site.

2).  From my understanding chan_lcr is the preferred way to connect 
Asterisk to mISDN v2.0.  From what I've read it does require some form 
of the LCR software to function.  It was a whole level of added 
complexity that I didn't want to add to the AstLinux project (unless 
we're forced to do so to support mISDN in Asterisk 1.6+).

 From a project maintainer's point of view, having mISDN functionality 
in dahdi is a total win, provided that enough European ISDN hardware is 
supported.  A more interesting approach are these new ISDN cards that 
appear as a network interface to the system (using a Realtek chip I 
believe).  A few of the ISDN users who use AstLinux are starting to look 
at those cards.

What we've decided to do at this point in the AstLinux project is to 
continue using mISDN v1 with Asterisk 1.4 releases.  We have not been 
successful in building chan_misdn against Asterisk 1.6 (but then again, 
we haven't tried very hard either since we're hoping for a better 
solution as mISDN v1 has more than it's share of issues).

Darrick

Olivier wrote:
> Hello,
> 
> I'm evaluating to possibility to use chan_misdn as a short term 
> workaround, in case latest Dahdi is not stable enough for what we are 
> planning to do (we wish to use Junghanns and Digium BRI hardware with 
> Asterisk 1.6) .
> I've read www.mISDN.org <http://www.mISDN.org> but still have a couple 
> of questions :
> 
> 1. Is correct that in a 2.6.27 (and up) enabled kernel, the "embedded" 
> mISDN version is 2.X ?
> 2. Is it correct that Asterisk MUST use chan-lcr to access this mISDN 
> software or is it still possible to install mISDN 1.X to be able to use 
> chan_misdn ?
> 3. Am I correctly understanding README in Dahdi-linux when I think you 
> can switch Digium B410P support from dahdi to chan_misdn, just editing 
> /etc/dahdi/modules file ?
> 4. Would you trust chan_misdn as a valuable short term solution for ISDN 
> BRI with Asterisk 1.6 ?
> 
> Regards
> 
> 
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