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 sipx-users@list.sipfoundry.org List Archive: http://list.sipfoundry.org/archive/sipx-users/
