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<div class="moz-cite-prefix">On 29/04/15 12:34, Grant Bagdasarian
wrote:<br>
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<p class="MsoNormal"><span style="color:#1F497D">That sounds
possible! Thanks.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">That
does this description mean: “</span><span
style="font-size:9.0pt;font-family:"Helvetica",sans-serif;background:white"
lang="EN-US">Execution time of load_gws() function is O(N) *
O(M), where N is number of different prefix lengths and M is
number of collisions for matching prefix(es) in lcr rules
hash table of the LCR instance.”?<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:9.0pt;font-family:"Helvetica",sans-serif;background:white"
lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">Does
this mean it loads the data from its internal memory or does
it load the data from the database again?</span></p>
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</blockquote>
load_gws() prepares an ordered list of gateways for current
destination. It loads data only from internal in-memory gateways db
(hash table).<br>
<blockquote
cite="mid:d928a593e6d94f229cbc5ece7b0aff55@CM-EX-V01.cm.local"
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<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">How
fast does it select a gateway after load_gws using
next_gw()? Is it O(N) again?</span></p>
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O(1) since load_gws already prepared ordered (by price) list and
next_gw() only takes next gw in a list.<br>
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<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">What
about multiple combinations of capabilities? For example
caller id spoofing and g729 codec, or caller id spoofing and
g711ulaw codec? Etc.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US">Wouldn’t
this cause the data to grow exponentially?
</span></p>
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</blockquote>
It would.<br>
<br>
Another idea:<br>
You can also have only one lcr instance and keep gateways
capabilities in the tag field (serialized somehow). Then you can
just iterate through a list generated by load_gws() skipping
gateways which don't match your criteria and in the end a call will
be routed to the cheapest gateway with proper capabilities.<br>
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cite="mid:d928a593e6d94f229cbc5ece7b0aff55@CM-EX-V01.cm.local"
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<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D" lang="EN-US"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span
style="color:windowtext;mso-fareast-language:NL"
lang="EN-US">From:</span></b><span
style="color:windowtext;mso-fareast-language:NL"
lang="EN-US"> sr-users
[<a class="moz-txt-link-freetext" href="mailto:sr-users-bounces@lists.sip-router.org">mailto:sr-users-bounces@lists.sip-router.org</a>]
<b>On Behalf Of </b>Vitaliy Aleksandrov<br>
<b>Sent:</b> Wednesday, April 29, 2015 10:36 AM<br>
<b>To:</b> <a class="moz-txt-link-abbreviated" href="mailto:sr-users@lists.sip-router.org">sr-users@lists.sip-router.org</a><br>
<b>Subject:</b> Re: [SR-Users] LCR with gateway
capabilities<o:p></o:p></span></p>
</div>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">What about configuring two LCR instances
with different "lcr_id".<br>
The first one can use only gateways with requested
capabilities and the second one all gateways.<br>
Then you can make a decision about which instance to use
during call routing process providing this lcr_id to
load_gws() function.<br>
<br>
<br>
<span style="font-size:12.0pt;mso-fareast-language:NL"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US">Hello,</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">From what I understand
about the LCR module is that the rules have to be
prioritized by the admin, be it manually or automatically
by an application.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Let’s say the LCR
database has 10 gateways, each with their own rules etc.
</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">4 of these gateways
support caller id spoofing and the others don’t.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">But the other 6 are
cheaper and Kamailio has to route a call using a gateway
which support caller id spoofing and is the cheapest of
the 4.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Would it be possible
to tell the LCR module to select a gateway based on
certain capabilities and is the cheapest of the ones which
support a certain capability?</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif;mso-fareast-language:NL"><br>
<br>
<br>
<o:p></o:p></span></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list<o:p></o:p></pre>
<pre><a moz-do-not-send="true" href="mailto:sr-users@lists.sip-router.org">sr-users@lists.sip-router.org</a><o:p></o:p></pre>
<pre><a moz-do-not-send="true" href="http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users">http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users</a><o:p></o:p></pre>
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<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Times New
Roman",serif;mso-fareast-language:NL"><o:p> </o:p></span></p>
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