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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hello All,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I’ve been investigating and playing with asterisk to
see how it would work out as a small-medium business pbx to handle mostly
interoffice/branch communication and a possibly communication out to pstn in
later stages of implementation. (All communication would be VoIP internally
with possibly 4 pstn lines at the HQ with either a TDM04B or spa3000s and 1-2 pstn
lines across 7-8 branches with spa3000s).<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Still evaluating my options about which devices will be
best.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>One thing I’ve been trying to figure out with little
luck is regarding true failover/redundancy design and would like some
suggestions from the list. I’ve looked through <a
href="http://www.voip-info.org/tiki-index.php?page=Asterisk+High+Availability+Solutions">http://www.voip-info.org/tiki-index.php?page=Asterisk+High+Availability+Solutions</a>
and I can understand the high availability solutions. Though there seems to be
several possible solutions for failover but none really seems to be the “recommended”
way to implement. Most seem just another “possible” way. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Since my proposed setup is fairly small 20-40 voip phones max
maybe 12-20 pots lines my main goal is:<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><span
style='mso-list:Ignore'>-<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>2 asterisk boxes, Hopefully possible
to be in different sites <o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><span
style='mso-list:Ignore'>-<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>If box1 fails calls will stay up
(except those that are pots connected off that box)<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><span
style='mso-list:Ignore'>-<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Rest of the VoIP phones will
re-register with <st1:address w:st="on"><st1:Street w:st="on">box</st1:Street>
2</st1:address>. (I noticed the cisco 79xx have backup proxy so this could be
handled by the phones).<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.25in;text-indent:.25in'><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>Or is there some
way to for asterisk <st1:address w:st="on"><st1:Street w:st="on">box</st1:Street>
1</st1:address> to pass registrations to <st1:address w:st="on"><st1:Street
w:st="on">box</st1:Street> 2</st1:address> as well?<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.25in;text-indent:.25in'><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'>What about the
spa3ks how would they handle re-registration to a different ip?<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in;text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><span
style='mso-list:Ignore'>-<font size=1 face="Times New Roman"><span
style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Configs / Voicemails mirrored across
both servers (probably easy done with rsync)<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I took a brief look at proxy with SER but I believe there are
a few things I possibly don’t understand.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>- How does SER determine if an asterisk box is down? Or it
SER only for load balancing?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>- Looks like I would need another box or 2 specifically to
do SER and then well that seems to become a point of failure?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>What are some ways people implement real failover with
asterisk? Or if there are some other resource that I should look at? Please
feel to point out if I’m way off the mark in anything or my expectations.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks for your time<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>John Cianfarani<o:p></o:p></span></font></p>
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