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Matej<br>
<br>
Yes, that would be useful. I watch for the Ring Indicator to indicate
incoming messages or calls, alternately you can poll the modem on a
regular basis.<br>
<br>
MUX would be best option for interface where you need GPRS/CDMA, SMS
and Data calls all at once. In my case, this isnt required.<br>
<br>
I'll post the changes for the PPP Pause when working but may be more
than a couple of weeks away due to other client commitments. If you
need it now, have a quick look at 3.2.1 NutOS source in CVS, search for
ppp_hackup in the ppp.c, ifconfig.c and pppsm.c. The approach is
likely to be similar.<br>
<br>
Cheers<br>
Brett<br>
<br>
Matej Kupljen wrote:<br>
<blockquote type="cite"
cite="mid9c20df505041402167d6d29bb@mail.gmail.com">
<pre wrap="">Hi
</pre>
<blockquote type="cite">
<pre wrap="">This would be useful.
</pre>
</blockquote>
<pre wrap=""><!---->
Indeed :-)
</pre>
<blockquote type="cite">
<pre wrap="">Most cellular modems have the ability to switch in and out of command
mode (to issue AT commands) using the DTR signal. If youre not using it
for hanging up, you can initialise the modem prior to dialling to
support this option.
</pre>
</blockquote>
<pre wrap=""><!---->
Great. I'll check that.
</pre>
<blockquote type="cite">
<pre wrap="">When you need to issue commands, you can pause PPP, lower DTR, issue
your command, return DTR and then resume PPP. To get PPP paused in
earlier versions of NutOS, you use the ppp_hackup flag. In latest
version you need to make a mod which does the same thing. Im expecting
to implement this shortly by way of issuing a _ioctl command (unless
someone has already done it?)
</pre>
</blockquote>
<pre wrap=""><!---->
Please let me know, how you have done (will do) this.
There is another issue:
Suppose you have a PPP session active over the GPRS.
What happens if the SMS is received or somebody is dialing your modem?
If you use MUX, you get RING or +CNMI on "AT Channel".
Does in this case you get notified by a DTR signal?
BR,
Matej
</pre>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
-----------------------------------------------------------------
Brett Abbott, Managing Director, Digital Telemetry Limited
Email: <a class="moz-txt-link-abbreviated" href="mailto:Brett.Abbott@digital-telemetry.com">Brett.Abbott@digital-telemetry.com</a>
PO Box 24 036 Manners Street, Wellington, New Zealand
Phone +64 (4) 5666-860 Mobile +64 (21) 656-144
------------------- Commercial in confidence --------------------
</pre>
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