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

[Karl Brose]

 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?
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