[Asterisk-Users] LiveVOIP troubleshooting

[geek at mnwifi.net]

switch to real provider


On Mon, 2005-05-02 at 20:21, Luki wrote:
> Hi everyone,
> 
> I need some ideas to troubleshoot this issue: I recently got an 800
> numbers from LiveVOIP and it works but on most calls the caller gets
> hears choppy audio (one drop out per 10 seconds or so).
> 
> I know this isn't LiveVOIP's support forum but I'm sure some here use
> their 800 service and I'm interested in their feedback and ideas. And
> don't get me wrong, LiveVOIP's support has been quite good --
> cooperative, fast response, action taken as requested -- but I do not
> want to try their patience. At this point I am not blaming them for
> this issue either.
> 
> Here's the summary:
> 
> * I'm connected via IAX2 to 
> * The server is in a datacenter with plenty of bandwidth. 
> * Using ulaw with "standard" 20 ms frames. 
> * I hear the caller perfectly fine, caller hears choppy audio.
> * tcpdump shows incoming and outgoing packets right on time,
>   every 20 ms in each direction. 
> * I'm not using trunking for now. 
> * Pings to LiveVOIP are about 35 ms. 
> * iax2 show channels shows 1 ms jitter, 42 ms lag.
> * Drop outs occur on IVR (or audio generated on the server itself) or
> during normal conversation with a SIP client (ATA or phone) connected
> to the server remotely. Connection between server and phones is well
> tested and working fine.
> 
> I have asked LiveVOIP to switch me from their Vancouver node to their
> New York node, which reduced ping times from 50 ms to 35 ms. Less
> chops but still not perfect.
> 
> Note that the same server is already connected to several Broadvoice
> accounts, which work flawlessly.
> 
> Anyway, if anyone has some ideas of what I can try, please let me
> know. I do not want to keep trying all their nodes to find one that
> works for me. I do not necessarily want to use a different codec
> either since I have the bandwidth and I may be receiving faxes, so I
> need ulaw.
> 
> Thanks and sorry for the long-ish post.
> --Luki
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