[Asterisk-Dev] Channel driver for Unistim...

[James Thompson]

This protocol may be similar to MEGACO however I am pretty sure that
they are not compatible. I believe i200x's use a pc client to act on
non-succession based nortel networks(MGCP).

The dummy server has the ability to connect to phones and have them
call each other using any of the codecs in the phone. So to get it
functional it's only a matter of passing the call requests to and from
asterisk.


On Thu, 16 Dec 2004 23:15:20 -0500, Karl Brose <khb at brose.com> wrote:
> 
>  From what I've read, UNIStim is similar to MEGACO and therefor it might
> be appropriate to start
> with the MGCP driver.  The phone's brochure describes the protocol as a
> subset of UNIStim.
> But I have also seen descriptions of the phones that list it with MGCP
> and H323 protocol.
> Wouldn't it make sense then to load MGCP firmware into these phones
> rather than develop
> UNIStim?   Maybe not.
> If someone can provide one or two Nortel phones for the development, I
> can help you with
> the effort pretty quickly and save a lot of the learning curve.
> I looked at the provided server code, but I am wondering just how well
> understood the protocol really is,
> there are a lot of arrays of binary numbers instead of interpreted
> structures. Has anyone made sense of them?
> What is this server actually capable of at this point?
> Are there some call flow examples already?  It would really be helpful
> if the persons who "cracked"
> the protocol could provide some documentation on the protocol or what
> they learned so far.
> Will Cedric Hans be involved to provide help?
> 
> 
> James Thompson wrote:
> 
> >Cedric Hans has successfully reverse engineered the unistim protocol.
> >See this dummy server at http://www.mlkj.net/UNISTIM/voi.tar.bz2. For
> >those who don't know this is how Nortel's i200x phones communicate to
> >the server.
> >
> >Now that we have a good idea on how the protocol works I think we need
> >to connect it with Asterisk. So where do we start, is there any
> >documentation on channels?
> >_______________________________________________
> >Asterisk-Dev mailing list
> >Asterisk-Dev at lists.digium.com
> >http://lists.digium.com/mailman/listinfo/asterisk-dev
> >To UNSUBSCRIBE or update options visit:
> >   http://lists.digium.com/mailman/listinfo/asterisk-dev
> >
> >
> >
> 
>