Hi All, I've a 1.4.15 A*k server supporting several users (approx 80 total, but <10 sim calls usually). I've one user who complains of intermittent bad calls, though I suspect the bad calls are across the board, but intermittent. Inbound calls are via in IAX trunk from Gradwell. CPU stats say that Asterisk never uses more than 4-5% cpu, systems idle besides that. Memory seems ok too. Network utilisation is < 300kbps. The voice network (clients + server) sit on their own dedicated 100Mb switches. Stats from the switch say its lightly loaded. I've turned on voicefile recording. What we hear, when there is a bad call, is stuttered speech, from BOTH sides (so local SIP client, and remote IAX inbound call). Debug from asterisk just shows the call inbound, answered and then hung up as per normal. I'm at a loss of how to debug the voice issue further, without putting a wireshark PC on the switch, port-mirroring the server and then capturing all of the traffic in a round-robin-type capture and even then I'm not sure what that will achieve. I'm going to switch from IAX to SIP for the inbound calls for that user and see if that helps. Any ideas welcome, Thanks Adrian -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20090602/42cc02ed/attachment.htm
On 2 Jun 2009, at 14:14, Adrian Marsh wrote:> Hi All, > > I?ve a 1.4.15 A*k server supporting several users (approx 80 total, > but <10 sim calls usually). I?ve one user who complains of > intermittent bad calls, though I suspect the bad calls are across > the board, but intermittent. > > Inbound calls are via in IAX trunk from Gradwell. CPU stats say that > Asterisk never uses more than 4-5% cpu, systems idle besides that. > Memory seems ok too. Network utilisation is < 300kbps. The voice > network (clients + server) sit on their own dedicated 100Mb > switches. Stats from the switch say its lightly loaded. > > I?ve turned on voicefile recording. What we hear, when there is a > bad call, is stuttered speech, from BOTH sides (so local SIP client, > and remote IAX inbound call). > Debug from asterisk just shows the call inbound, answered and then > hung up as per normal. > > I?m at a loss of how to debug the voice issue further, without > putting a wireshark PC on the switch, port-mirroring the server and > then capturing all of the traffic in a round-robin-type capture and > even then I?m not sure what that will achieve. > > I?m going to switch from IAX to SIP for the inbound calls for that > user and see if that helps. > > Any ideas welcome, >What internet connection do you have...
----- "Steve Howes" <steve at geekinter.net> wrote:> On 2 Jun 2009, at 14:14, Adrian Marsh wrote: > > > Hi All, > > > > I?ve a 1.4.15 A*k server supporting several users (approx 80 total, > > but <10 sim calls usually). I?ve one user who complains of > > intermittent bad calls, though I suspect the bad calls are across > > the board, but intermittent. > > > > Inbound calls are via in IAX trunk from Gradwell. CPU stats say that > > Asterisk never uses more than 4-5% cpu, systems idle besides that. > > Memory seems ok too. Network utilisation is < 300kbps. The voice > > network (clients + server) sit on their own dedicated 100Mb > > switches. Stats from the switch say its lightly loaded. > > > > I?ve turned on voicefile recording. What we hear, when there is a > > bad call, is stuttered speech, from BOTH sides (so local SIP client, > > and remote IAX inbound call). > > Debug from asterisk just shows the call inbound, answered and then > > hung up as per normal. > > > > I?m at a loss of how to debug the voice issue further, without > > putting a wireshark PC on the switch, port-mirroring the server and > > then capturing all of the traffic in a round-robin-type capture and > > even then I?m not sure what that will achieve. > > > > I?m going to switch from IAX to SIP for the inbound calls for that > > user and see if that helps. > > > > Any ideas welcome, > > > > What internet connection do you have... > _______________________________________________ > >Physical or virtualised server ? Best Regards, -- SplatNIX IT Services :: Innovation through collaboration
On 2 Jun 2009, at 14:14, Adrian Marsh wrote:> I?m at a loss of how to debug the voice issue further, without > putting a wireshark PC on the switch, port-mirroring the server and > then capturing all of the traffic in a round-robin-type capture and > even then I?m not sure what that will achieve.Why not just tcpdump on the asterisk box then load it into wireshark?