I don't know everything that's going on as someone else has been working on the project, but it hasn't really been going anywhere, so I had some questions. We've got some Snom 320s with Asterisk 1.2.9.1 (I believe). All was well (with a previous release), but the phones started to get real choppy. We are also running a softphone at this location and it was fine. The SIP qualify was returning ping times anywhere from 20 to 70 ms over a sparsely used LAN. Command prompt (ICMP) pings were under 1 ms. No amount of different Asterisk versions or phone firmware revisions seems to solve this. All was well, then (as far as we know) without changes, it crapped out. Any ideas? ---- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20060612/de3f8fb3/attachment.htm
If you ping on the SIP port the message has to go through the application layer - which takes some time considering it is an embedded system with a small CPU. That part should be ok. It the phone becomes choppy, that problem is probably related to the RTP side. Maybe you have different packet sizes for incoming and outgoing traffic. You can get an Ethereal trace from the web interface of the phone which should show you the RTP jitter (PCAP trace). Or use a hub if you don't trust that trace. 6.1 is the latest version if you want to try the latest image (http://www.snom.com/wiki/index.php/Beta_Firmware). Hope that helps, CS ________________________________ From: asterisk-users-bounces@lists.digium.com [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of Mike Hammett Sent: Monday, June 12, 2006 3:01 PM To: asterisk-users@lists.digium.com Subject: [Asterisk-Users] Snom high SIP ping time I don't know everything that's going on as someone else has been working on the project, but it hasn't really been going anywhere, so I had some questions. We've got some Snom 320s with Asterisk 1.2.9.1 (I believe). All was well (with a previous release), but the phones started to get real choppy. We are also running a softphone at this location and it was fine. The SIP qualify was returning ping times anywhere from 20 to 70 ms over a sparsely used LAN. Command prompt (ICMP) pings were under 1 ms. No amount of different Asterisk versions or phone firmware revisions seems to solve this. All was well, then (as far as we know) without changes, it crapped out. Any ideas? ---- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20060612/aa4b6ddf/attachment.htm
Well, it wasn't so much of a command line ping on the SIP port, but the times reported under Status when qualify is set to yes. It should be far less time than that as the time from that PBX up to my server out on the public Internet is only 10 ms away. I have servers in other parts of the country that are only 55 ms away. ---------- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com If you ping on the SIP port the message has to go through the application layer - which takes some time considering it is an embedded system with a small CPU. That part should be ok. It the phone becomes choppy, that problem is probably related to the RTP side. Maybe you have different packet sizes for incoming and outgoing traffic. You can get an Ethereal trace from the web interface of the phone which should show you the RTP jitter (PCAP trace). Or use a hub if you don't trust that trace. 6.1 is the latest version if you want to try the latest image (http://www.snom.com/wiki/index.php/Beta_Firmware). Hope that helps, CS
Mike Hammett wrote:> I don't know everything that's going on as someone else has been > working on the project, but it hasn't really been going anywhere, so I > had some questions. > > We've got some Snom 320s with Asterisk 1.2.9.1 (I believe). All was > well (with a previous release), but the phones started to get real > choppy. We are also running a softphone at this location and it was > fine. The SIP qualify was returning ping times anywhere from 20 to 70 > ms over a sparsely used LAN. Command prompt (ICMP) pings were under 1 > ms. No amount of different Asterisk versions or phone firmware > revisions seems to solve this. All was well, then (as far as we know) > without changes, it crapped out. > > Any ideas? > > > ---- > Mike Hammett > Intelligent Computing Solutions > http://www.ics-il.com > > > ------------------------------------------------------------------------ > > _______________________________________________ > --Bandwidth and Colocation provided by Easynews.com -- > > Asterisk-Users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users >I'm having much the same issues only I'm using Cisco 7960 phones. When I do a 'sip show peers' I'm getting times in excess of 300ms. A soft phone on the same network (x-lite), is reporting times of 4 ms. Related to this (I think), I'm getting audio issues. The person being called can hear the caller fine but the callee's voice drops in and out excessively. I have qualify set to yes in the sip definitions for all the clients (Including the soft phone). Does anyone know what is causing this. I'm not aware what the sip ping times were earlier, but the audio issues seemed to have started spontaneously. Anyone have any idea regarding this?