Also of note, I'm able to reproduce this only because the ISP the calls are behind is having random(but multiple times a day) latency spikes from ~15ms normally up to ~300ms to the first gateway past the modem. William King Senior Engineer Quentus Technologies, INC 1037 NE 65th St Suite 273 Seattle, WA 98115 Main: (877) 211-9337 Office: (206) 388-4772 Cell: (253) 686-5518 william.king@quentustech.com On 06/25/2013 05:13 AM, Nathan Neulinger wrote:
I guess the big question is this:
Is it _supposed_ to recover?
From Tony's notes, it's sounding like it's very critically dependent on the timer in the switch, which very well be the current cause of my issues.
What I probably need to do is have a pair of phones automatically calling each other, and just leaving them up - just to generate a continuous independent background stream. That'll tell me if any glitches are specific to a particular channel, or if they are common across multiple calls - which I'd expect if the timer was swinging.
I don't know where my latency is being introduced unfortunately...
-- Nathan
On 06/25/2013 01:59 AM, Avi Marcus wrote:
It sounds like I saw this on a home internet connection to a public server when the connection had varying latency. Once the call jittered, it never recovered. My stop-gap was to add a small jitter buffer <http://wiki.freeswitch.org/wiki/Jitterbuffer>, e.g. <action application="jitterbuffer" data="100:200:20"/> to the user dialplan. This /seemed /to make FS handle rewriting the timestamps for drift rather than relying on the Linksys ATA to do that.
Probably the wrong solution, but all I had time/understanding for. -Avi
On Tue, Jun 25, 2013 at 4:42 AM, Nathan Neulinger <nneul@mst.edu <mailto:nneul@mst.edu>> wrote:
On 06/24/2013 08:24 PM, Anthony Minessale wrote: > fsctl debug_level 10 > Also make sure ve host has high res timing.
Turned up logging, will wait for next occurrence.
Not sure on the latter - it's a vmware ESXi 5.1 box running FC 17 x86_64 as the guest.
/dev/rtc /dev/rtc0 exist posix and soft timers are loaded in fs
I've got a bunch of unused Dell 1950's on hand, so could use a few of those machines if needed to get vmware out of the picture.
-- Nathan
------------------------------------------------------------ Nathan Neulinger nneul@mst.edu <mailto:nneul@mst.edu> Missouri S&T Information Technology (573) 612-1412 <tel:%28573%29%20612-1412> System Administrator - Architect
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