Have you tried capturing the traffic between sites and measuring it rather than just assuming what's going on?
On Tue, Apr 24, 2012 at 6:00 AM, Claas Hilbrecht < [email protected]> wrote: > Hello, > > I'm sorry to warm up this thread again, but I think I just went into the > same pit and need some advice. > > We're facing voice stuttering or disruption since ever (it just happens one > or two times a week) but it is getting worse since 3-4 weeks I think. After > digging the mailling list I think the cause is our setup. > > We have a HA setup with split DNS (as described here > < > http://wiki.sipfoundry.org/display/sipXecs/Location+based+DNS+views+for+sipXecs+using+BIND > >) > at two locations with a low end (1Mbit/s) openvpn tunnel between. We're > start using sipXecs since 4.2.1 and I updated to 4.4 as it becomes > available. We're now running sipXconfig(4.4.0- 2012-04-13EDT09:33:36 > ip-10-72-10-163). > > Site A has 3 PolyCom 650 phones each with 2 expansion modules that monitors > 24 other lines. At Site B there are 8 polycom 650 phones each with 2 > expansion modules that also monitors 24 other lines. I choose this setup to > see who's talking on each line. This helps to improve manual call transfer > to other persons a lot. > > Using the low end (DSL based) VPN to talk to each site is not a problem but > since 3-4 weeks we're facing voice problems on active calls when some > "event" occur. The event could be an external or internal call or anything > that seems to change "state" on the phones. After an event is trigged the > ping between both sites went up to 1000ms-1500ms for 3-4 seconds and it > takes about 10 seconds to get the ping low to ~60ms. Watching an iftop on > the VPN interface I see that the VPN is at 100% for 3-4 seconds at the same > time the ping time rises. > > I don't know why the problem is getting worser since 3-4 weeks, maybe an > update make the situation even more worse than before. Looking at the > ChangeLog I can't something that is realted to BLF, but maybe I'm wrong. > > So my question is what I can do to "fix" the situation? > > And are there any plans to change the needed bandwith with sipXecs 4.6? > > > Am I correct to assume that having many monitored speed dials will > > greatly increase bandwidth consumption? > > Is there any way to calculate the required bandwith? > > -- > Claas Hilbrecht > http://www.jucs-kramkiste.de > > _______________________________________________ > sipx-users mailing list > [email protected] > List Archive: http://list.sipfoundry.org/archive/sipx-users/ > -- Michael Picher, Director of Technical Services eZuce, Inc. 300 Brickstone Square**** Suite 201**** Andover, MA. 01810 O.978-296-1005 X2015 M.207-956-0262 @mpicher <http://twitter.com/mpicher> www.ezuce.com ------------------------------------------------------------------------------------------------------------ There are 10 kinds of people in the world, those who understand binary and those who don't.
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