Bad connection diagnostics?
Hi, I have a client who has been working fine for months, but as of late they are reporting connections where the audio only works in one direction or neither and "terrible echo". I know they had some issues with their local Cable Connection, but they are supposedly resolved. Results from "ping -n 50 -l 256 " and "tracert" are virtually identical to mine from here and I have no issues. Are there some diagnostics I could run to try and pin this down. The phones are all cisco 504Gs, the server is a VPS from synapseglobal. Thanks for any ideas you may have. Sean
I would like an answer to this, too. However, here's a place to start: you have 2 legs - you to their VPS, and their VPS to their office phones. Perhaps there's an issue with the VPS. Can you get their VPS to playback a file and do an echo test? E.g. MOH or similar and call it directly and see if any of the same issues persist. Either way, you've narrowed down where the issue is... -Avi On Tue, Nov 6, 2012 at 6:41 PM, Sean Devoy <sdevoy@bizfocused.com> wrote:
Hi,****
I have a client who has been working fine for months, but as of late they are reporting *connections where the audio only works in one direction or neither and “terrible echo”.*****
** **
I know they had some issues with their local Cable Connection, but they are supposedly resolved. Results from “ping –n 50 –l 256 ” and “tracert” are virtually identical to mine from here and I have no issues. Are there some diagnostics I could run to try and pin this down. The phones are all cisco 504Gs, the server is a VPS from synapseglobal.****
** **
Thanks for any ideas you may have.****
Sean****
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Thanks for the response AVI. I should have been more clear. This is a multi-tenant box. We use it for my 3 offices too. That is sort of why I mentioned ping and tracert results were the same, so I should have filled in the rest. The other tenants have no reported problems, and none of our 3 sites (7 phones) seem to have these issues currently. I have had all of these issues at one time or another, but write it off to temporary internet throughput variability issues/problems. I hate to use that excuse even when I truly think it is the problem. But when the problems are persistent (not constant) I am at a loss what to capture/track/test. They are looking to me to at least identify the problem and hopefully get it resolved. I do have the FS logs from at least one of these calls that had one way audio, but I am not proficient enough to spot any audio channel problems. I can hang in there through dialplan issues and sofia connections/errors and maybe even codec mismatches, but the audio connection information is still one step too far for me. Should I post those logs or can you offer another plan? Sean From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Avi Marcus Sent: Tuesday, November 06, 2012 12:18 PM To: FreeSWITCH Users Help Subject: Re: [Freeswitch-users] Bad connection diagnostics? I would like an answer to this, too. However, here's a place to start: you have 2 legs - you to their VPS, and their VPS to their office phones. Perhaps there's an issue with the VPS. Can you get their VPS to playback a file and do an echo test? E.g. MOH or similar and call it directly and see if any of the same issues persist. Either way, you've narrowed down where the issue is... -Avi On Tue, Nov 6, 2012 at 6:41 PM, Sean Devoy <sdevoy@bizfocused.com> wrote: Hi, I have a client who has been working fine for months, but as of late they are reporting connections where the audio only works in one direction or neither and "terrible echo". I know they had some issues with their local Cable Connection, but they are supposedly resolved. Results from "ping -n 50 -l 256 " and "tracert" are virtually identical to mine from here and I have no issues. Are there some diagnostics I could run to try and pin this down. The phones are all cisco 504Gs, the server is a VPS from synapseglobal. Thanks for any ideas you may have. Sean _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
One way audio will usually be due to NAT problems. Eg the IP in the SDP is an internal IP so it can send audio but the remote end doesn't know where to send audio to in the other direction. Echo on a VoIP call would be due to one of the endpoints. Sent from my iPad On 6 Nov 2012, at 16:41, "Sean Devoy" <sdevoy@bizfocused.com> wrote:
Hi, I have a client who has been working fine for months, but as of late they are reporting connections where the audio only works in one direction or neither and “terrible echo”.
I know they had some issues with their local Cable Connection, but they are supposedly resolved. Results from “ping –n 50 –l 256 ” and “tracert” are virtually identical to mine from here and I have no issues. Are there some diagnostics I could run to try and pin this down. The phones are all cisco 504Gs, the server is a VPS from synapseglobal.
Thanks for any ideas you may have. Sean _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
Incidentally you may also get timing issues on a VPS since other guests/the host can unpredictably steal CPU time away from your guest, so it's harder to get reliable timings. That'd most likely present itself as lags or audio glitches where frames are dropped. Shouldn't cause one way audio or echo though. Sent from my iPad On 6 Nov 2012, at 16:41, "Sean Devoy" <sdevoy@bizfocused.com> wrote:
Hi, I have a client who has been working fine for months, but as of late they are reporting connections where the audio only works in one direction or neither and “terrible echo”.
I know they had some issues with their local Cable Connection, but they are supposedly resolved. Results from “ping –n 50 –l 256 ” and “tracert” are virtually identical to mine from here and I have no issues. Are there some diagnostics I could run to try and pin this down. The phones are all cisco 504Gs, the server is a VPS from synapseglobal.
Thanks for any ideas you may have. Sean _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com
Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
AH HA! Thanks Steve. They also reported “huge laaaaaaaagggg” on one instance. That makes perfect sense for that. However, I find NAT issue questionable in this case since they have been working for so long and the network hardware has not changed. From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Steven Ayre Sent: Wednesday, November 07, 2012 11:53 AM To: FreeSWITCH Users Help Cc: <FreeSWITCH-users@lists.freeswitch.org> Subject: Re: [Freeswitch-users] Bad connection diagnostics? Incidentally you may also get timing issues on a VPS since other guests/the host can unpredictably steal CPU time away from your guest, so it's harder to get reliable timings. That'd most likely present itself as lags or audio glitches where frames are dropped. Shouldn't cause one way audio or echo though. Sent from my iPad On 6 Nov 2012, at 16:41, "Sean Devoy" <sdevoy@bizfocused.com> wrote: Hi, I have a client who has been working fine for months, but as of late they are reporting connections where the audio only works in one direction or neither and “terrible echo”. I know they had some issues with their local Cable Connection, but they are supposedly resolved. Results from “ping –n 50 –l 256 ” and “tracert” are virtually identical to mine from here and I have no issues. Are there some diagnostics I could run to try and pin this down. The phones are all cisco 504Gs, the server is a VPS from synapseglobal. Thanks for any ideas you may have. Sean _________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com FreeSWITCH-powered IP PBX: The CudaTel Communication Server http://www.cudatel.com Official FreeSWITCH Sites http://www.freeswitch.org http://wiki.freeswitch.org http://www.cluecon.com FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
participants (3)
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Avi Marcus
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Sean Devoy
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Steven Ayre