you could use most GSM test systems for such purpose . on ebay you might find very cheap ones<div>regards<br><br><div class="gmail_quote">On Fri, May 13, 2011 at 2:51 PM, Gianni Tedesco <span dir="ltr">&lt;<a href="mailto:gianni@scaramanga.co.uk">gianni@scaramanga.co.uk</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Hi,<br>
<br>
It seems like a BTS is required in order to really debug anything one<br>
develops with osmocombb. I&#39;m still looking at implementing SMS. However<br>
the only off-the-shelf option seems to be USRP which is about $1,000<br>
right? Is this going to become a very expensive hobby or are there<br>
cheaper options here?<br>
<br>
Is there a way to bypass L1CTL on the phone and feed the data in to,<br>
say, openBTS? If not, it would seem useful to hack such a thing up...<br>
<font color="#888888"><br>
Gianni<br>
<br>
<br>
</font></blockquote></div><br></div>