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<p>Hello!</p>
<p>Could you help me with Asterisk 11.21.2 and AsteriskNow platform.</p>
<p>The problem is:</p>
<p>My Asterisk PBX has SIP (chan_sip) trunk to provider.</p>
<p>Asterisk periodically loses trunk registratrion:</p>
<p><b>sip show registry:</b></p>
<p><i>Host dnsmgr Username
Refresh State Reg.Time </i><i><br>
</i><i>X.X.X.X:5060 N <LOGIN>
105 Unregistered </i><b><br>
</b></p>
<p>This happens sometimes once per 4 hours, sometimes once per a
week.</p>
<p>I don't see any patterns.</p>
<p><b>sip.conf:</b></p>
<p>registerattempts=0</p>
<p>registertimeout=20</p>
<p><b>peer confifuration:</b><br>
</p>
<p>[XXXX-friend]<br>
disallow=all<br>
host=192.168.1.1<br>
defaultuser=<phone number><br>
fromuser=<phone number><br>
callerid=<phone number><br>
secret=<ISP secret><br>
type=friend<br>
qualify=yes<br>
allow=ulaw<br>
allow=alaw<br>
nat=no<br>
rtpkeepalive=10<br>
dtmfmode=rfc2833<br>
insecure=port,invite<br>
context=from-trunk-ISP1<br>
fromdomain=<ISP domain><br>
</p>
<p><b>registration string:</b></p>
<p>register=<phone number>:<ISP secret>@<ISP
domain>/<phone number></p>
<p><b>where:</b></p>
<p><phone number> is our ISP-provided phone number</p>
<p><ISP secret> is our ISP-provided SIP secret</p>
<p><ISP domain> is our ISP SIP server IP address</p>
<p>I don't have NAT between the ISP and my server (the ISP server IP
address is in Asterisk's sip.conf Localnet scope) but as I can see
there is ISP's routers between my Asterisk and the ISP SIP server.<br>
</p>
<p>There is not any firewall between the ISP and my Asterisk. The
firewall rules on Asterisk host allow any traffic from host to the
ISP and allow 5060/UDP from ISP to Asterisk host.</p>
<p><br>
</p>
<p>When I restart Asterisk I can see successful registration to the
ISP. And it works. I can make calls in any direction but after
some time I have the "Unregistered" status and calls don't work.</p>
<p>When I make tcpdump I can see about 40-60% failed REGISTER
attempts (401 forbidden) and 100% failed OPTIONS attempts (is it
qualify packets?) with 401 forbidden.</p>
<p>The interesting thing is: the last REGISTER packet from my
Asterisk to the ISP has "OK" response and there was not any
REGISTER attempts after this packet, only OPTIONS packets.<br>
</p>
<p>The second interesting thing is: this ISP has been working for
about 6 or even 12 months before this problem happened.</p>
<p><br>
</p>
<p>What should I check to understand and solve my problem?</p>
<p><br>
</p>
<p>P.S. I'm sorry for my bad English(<br>
</p>
<pre class="moz-signature" cols="72">--
Dmitriy Ermakov</pre>
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