Thanks guys for your help
 
I've been using OpenBTS too long and assumed setting up asterisk with the nanoBTS with NITB would operate with similar configurations. I couldnt quite understand why there was no pairing of IMSI's in the asterisk configs but that is all self explanitory now and thus I now have calls routing through (all be it with no audio yet!) but I am sure that will be solved easily.
 
I am mainly wanting to use Asterisk integration so I can use this to inject SMS's and have full control of the entire PDU to send different types of SMS. I chose Asterisk purely because I have a set up to do this with openBTS but wanting to upgrade to nanoBTS.
 
Maybe I am trying to create something that has no doubt been done before but I can't find any documentation on how send a full SMS-Deliver PDU in to the nanoBTS.  Any knowledge or pointers here would be great, this is something that I wouldnt mind to contribute to if there is not this type of capability already available.
 
Regards

Adam
 
> From: alexander.chemeris@gmail.com
> Date: Fri, 5 Jul 2013 17:18:48 +0400
> Subject: Re: Help with Asterisk setup to stop Openbsc registering handsets
> To: boardsofcanada@live.co.uk
> CC: openbsc@lists.osmocom.org
>
> Adam,
>
> On Fri, Jul 5, 2013 at 2:47 PM, Adam B <boardsofcanada@live.co.uk> wrote:
> > Anyway my problem is that I don't know how to prevent OpenBSC from using its
> > own HLR and instead forward all phones that want to register to my nanoBTS
> > to do so via Asterisk.
>
> Unfortunately, NITB doesn't have an external interface for
> registrations yet and thus LCR can't forward them to SIP.
>
> We use Freeswitch instead of Asterisk and there we configure
> Freeswitch in "gateway" mode. In this mode where FS doesn't take
> decision about a user availability bu itself, it just forwards all
> calls to relevant interface (LCR SIP interface in this case).
>
> Adding an external interface for user registration to NITB and
> converting it to SIP would be a great step towards a more SIP-friendly
> architecture. Feel free to contribute ;)
>
> --
> Regards,
> Alexander Chemeris.
> CEO, Fairwaves LLC / ïïï õÍòÁÄÉÏ
> http://fairwaves.ru
>