This is a bit off topic, because I 'think' it isn't an Asterisk problem. However I'm not sure and anyhow I'm hoping someone may recognize the symptom. We moved offices a month ago. Our trusty SNOM190s (all between 3 and 5 years old) were packed up for the move, then unpacked a couple of weeks later. On unpacking them and connecting them to the new network, several of them didn't work well. The symptom is that outgoing RTP audio is garbled - like the packets are pulsed. Inbound is fine. This isn't true for all of the phones, just some of them. (The all run the same SNOM firmware) To be fair, they are on a new network, so it could be the cables or new 1Gb switches, except that the problem moves with the phone if you relocate it from one desk to another. I've tried a fresh asterisk install, but that didn't help either. So I am forced to conclude that something went 'bad' in those (old) phones while they were switched off. Has anyone got any clues for me? Thanks! Tim. Tim Panton - Web/VoIP consultant and implementor www.westhawk.co.uk -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/pkcs7-signature Size: 2419 bytes Desc: not available Url : http://lists.digium.com/pipermail/asterisk-users/attachments/20090509/20ae0b8c/attachment.bin
Because the phone is a digital system, I would suspect that it is a problem with the switch. Run a quick PCAP trace to see where the jitter comes from. Depending on the firmware version, you can do that from the web interface. CS -----Urspr?ngliche Nachricht----- Von: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] Im Auftrag von Tim Panton Gesendet: Samstag, 9. Mai 2009 11:46 An: Asterisk Users Mailing List - Non-Commercial Discussion Betreff: [asterisk-users] Rusting Snoms? This is a bit off topic, because I 'think' it isn't an Asterisk problem. However I'm not sure and anyhow I'm hoping someone may recognize the symptom. We moved offices a month ago. Our trusty SNOM190s (all between 3 and 5 years old) were packed up for the move, then unpacked a couple of weeks later. On unpacking them and connecting them to the new network, several of them didn't work well. The symptom is that outgoing RTP audio is garbled - like the packets are pulsed. Inbound is fine. This isn't true for all of the phones, just some of them. (The all run the same SNOM firmware) To be fair, they are on a new network, so it could be the cables or new 1Gb switches, except that the problem moves with the phone if you relocate it from one desk to another. I've tried a fresh asterisk install, but that didn't help either. So I am forced to conclude that something went 'bad' in those (old) phones while they were switched off. Has anyone got any clues for me? Thanks! Tim. Tim Panton - Web/VoIP consultant and implementor www.westhawk.co.uk
On Sat, 9 May 2009, Tim Panton wrote:> This is a bit off topic, because I 'think' it isn't an Asterisk problem. > However I'm not sure and anyhow I'm hoping someone may recognize the symptom. > > We moved offices a month ago. Our trusty SNOM190s (all between 3 and 5 years > old) > were packed up for the move, then unpacked a couple of weeks later. > > On unpacking them and connecting them to the new network, several of them > didn't work well. The symptom is that outgoing RTP audio is garbled - like > the > packets are pulsed. Inbound is fine. This isn't true for all of the phones, > just some of them. (The all run the same SNOM firmware)I didn't experience these problems, even when not using the phones for more than a year. The Snom 190s are pretty well built though, unlike the 360's that are just a piece of crap. Did you check the network settings, maybe there is still some NAT stuff present in the phones? I would do a factory reset on the phone and try again. I bought 30 Snom 360's in 2005, since then 12 of them have been showing problems, an absolutely unacceptable mortality rate for a business phone. I had 4 power supplies gone dead, of 4 phones the display went dead and i had about 7 phones where the receiver hook switch broke off inside the case (if you open the phone you see that the receiver hook switched is locked in between to tiny pieces of plastic). The hook switch even broke in my phone and i am very careful with it, i don't handle it rough... (i'm not counting the power supplies among broken phones) So far Snom repaired 2 batches under warranty, one after the warranty expired, the 3rd batch of 4 phones if waiting to be sent to them, will wait to see their reply, the fail rate is unacceptable and way beyond normal.
It could be that the PCAP resolution is 10 ms. The phones don't have a real-time clock... But 50 ms is definitively not okay. CS -----Urspr?ngliche Nachricht----- Von: Tim Panton [mailto:thp at westhawk.co.uk] Gesendet: Dienstag, 19. Mai 2009 13:46 An: Asterisk Users Mailing List - Non-Commercial Discussion; Christian Stredicke Betreff: Re: [asterisk-users] Rusting Snoms? Christian, thanks, I'd never run pcap in a phone before - cool. The trace shows jitter - but in a weird way. some of the packets have delta's of > 20 ms but always a multiple of 10 so 50 and 30 occur, as do 10 and 0. Is that normal ? Tim. On 9 May 2009, at 11:04, Christian Stredicke wrote:> Because the phone is a digital system, I would suspect that it is a > problem with the switch. Run a quick PCAP trace to see where the > jitter comes from. Depending on the firmware version, you can do > that from the web interface. > > CS > > -----Urspr?ngliche Nachricht----- > Von: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com > ] Im Auftrag von Tim Panton > Gesendet: Samstag, 9. Mai 2009 11:46 > An: Asterisk Users Mailing List - Non-Commercial Discussion > Betreff: [asterisk-users] Rusting Snoms? > > This is a bit off topic, because I 'think' it isn't an Asterisk > problem. > However I'm not sure and anyhow I'm hoping someone may recognize the > symptom. > > We moved offices a month ago. Our trusty SNOM190s (all between 3 and > 5 years old) were packed up for the move, then unpacked a couple of > weeks later. > > On unpacking them and connecting them to the new network, several of > them didn't work well. The symptom is that outgoing RTP audio is > garbled - like the packets are pulsed. Inbound is fine. This isn't > true for all of the phones, just some of them. (The all run the same > SNOM firmware) > > To be fair, they are on a new network, so it could be the cables or > new 1Gb switches, except that the problem moves with the phone if > you relocate it from one desk to another. > > I've tried a fresh asterisk install, but that didn't help either. > > So I am forced to conclude that something went 'bad' in those > (old) phones while they were switched off. Has anyone got any clues > for me? > > Thanks! > > Tim. > > Tim Panton - Web/VoIP consultant and implementor www.westhawk.co.uk > > > > > _______________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-usersTim Panton - Web/VoIP consultant and implementor www.westhawk.co.uk
With cheap PoE devices Ethernet can easily get "on the edge" - or over the edge. If you have another switch/different model, a quick try will help isolating the problem. CS -----Urspr?ngliche Nachricht----- Von: Tim Panton [mailto:thp at westhawk.co.uk] Gesendet: Dienstag, 19. Mai 2009 13:46 An: Asterisk Users Mailing List - Non-Commercial Discussion; Christian Stredicke Betreff: Re: [asterisk-users] Rusting Snoms? On further investigation - it may well be that the switch doesn't like the phones (or vice-versa) I tried daisy-chaining one phone off the second port of the other and got distinctly better audio. It's a new netgear fvs 318 with autosensing 100/10 ports. Any clues ? Thanks. Tim On 9 May 2009, at 11:04, Christian Stredicke wrote:> Because the phone is a digital system, I would suspect that it is a > problem with the switch. Run a quick PCAP trace to see where the > jitter comes from. Depending on the firmware version, you can do > that from the web interface. > > CS > > -----Urspr?ngliche Nachricht----- > Von: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com > ] Im Auftrag von Tim Panton > Gesendet: Samstag, 9. Mai 2009 11:46 > An: Asterisk Users Mailing List - Non-Commercial Discussion > Betreff: [asterisk-users] Rusting Snoms? > > This is a bit off topic, because I 'think' it isn't an Asterisk > problem. > However I'm not sure and anyhow I'm hoping someone may recognize the > symptom. > > We moved offices a month ago. Our trusty SNOM190s (all between 3 and > 5 years old) were packed up for the move, then unpacked a couple of > weeks later. > > On unpacking them and connecting them to the new network, several of > them didn't work well. The symptom is that outgoing RTP audio is > garbled - like the packets are pulsed. Inbound is fine. This isn't > true for all of the phones, just some of them. (The all run the same > SNOM firmware) > > To be fair, they are on a new network, so it could be the cables or > new 1Gb switches, except that the problem moves with the phone if > you relocate it from one desk to another. > > I've tried a fresh asterisk install, but that didn't help either. > > So I am forced to conclude that something went 'bad' in those > (old) phones while they were switched off. Has anyone got any clues > for me? > > Thanks! > > Tim. > > Tim Panton - Web/VoIP consultant and implementor www.westhawk.co.uk > > > > > _______________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-usersTim Panton - Web/VoIP consultant and implementor www.westhawk.co.uk
I would not do a firmware upgrade from such an old version. That will probably mean a lot of (more) trouble. "Never touch a running system"... New firmware might have the option to set the link speed, but IMHO it is easier to do that on the switch. CS -----Urspr?ngliche Nachricht----- Von: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] Im Auftrag von Tim Panton Gesendet: Dienstag, 19. Mai 2009 15:46 An: Christian Stredicke Cc: Asterisk Users Mailing List - Non-Commercial Discussion Betreff: Re: [asterisk-users] Rusting Snoms? It isn't POE - its using the original power brick that came with the phone. Swapping to a dumb hub (without uplink-autosensing) seems to fix it. Would a firmware upgrade (from 3,56m 6154) help ? Tim. On 19 May 2009, at 13:28, Christian Stredicke wrote:> With cheap PoE devices Ethernet can easily get "on the edge" - or over > the edge. If you have another switch/different model, a quick try will > help isolating the problem. > > CS > > -----Urspr?ngliche Nachricht----- > Von: Tim Panton [mailto:thp at westhawk.co.uk] > Gesendet: Dienstag, 19. Mai 2009 13:46 > An: Asterisk Users Mailing List - Non-Commercial Discussion; Christian > Stredicke > Betreff: Re: [asterisk-users] Rusting Snoms? > > On further investigation - it may well be that the switch doesn't like > the phones (or vice-versa) I tried daisy-chaining one phone off the > second port of the other and got distinctly better audio. > > It's a new netgear fvs 318 with autosensing 100/10 ports. > > Any clues ? > > Thanks. > Tim > > On 9 May 2009, at 11:04, Christian Stredicke wrote: > >> Because the phone is a digital system, I would suspect that it is a >> problem with the switch. Run a quick PCAP trace to see where the >> jitter comes from. Depending on the firmware version, you can do that >> from the web interface. >> >> CS >> >> -----Urspr?ngliche Nachricht----- >> Von: asterisk-users-bounces at lists.digium.com >> [mailto:asterisk-users-bounces at lists.digium.com >> ] Im Auftrag von Tim Panton >> Gesendet: Samstag, 9. Mai 2009 11:46 >> An: Asterisk Users Mailing List - Non-Commercial Discussion >> Betreff: [asterisk-users] Rusting Snoms? >> >> This is a bit off topic, because I 'think' it isn't an Asterisk >> problem. >> However I'm not sure and anyhow I'm hoping someone may recognize the >> symptom. >> >> We moved offices a month ago. Our trusty SNOM190s (all between 3 and >> 5 years old) were packed up for the move, then unpacked a couple of >> weeks later. >> >> On unpacking them and connecting them to the new network, several of >> them didn't work well. The symptom is that outgoing RTP audio is >> garbled - like the packets are pulsed. Inbound is fine. This isn't >> true for all of the phones, just some of them. (The all run the same >> SNOM firmware) >> >> To be fair, they are on a new network, so it could be the cables or >> new 1Gb switches, except that the problem moves with the phone if you >> relocate it from one desk to another. >> >> I've tried a fresh asterisk install, but that didn't help either. >> >> So I am forced to conclude that something went 'bad' in those >> (old) phones while they were switched off. Has anyone got any clues >> for me? >> >> Thanks! >> >> Tim. >> >> Tim Panton - Web/VoIP consultant and implementor www.westhawk.co.uk >> >> >> >> >> _______________________________________________ >> -- Bandwidth and Colocation Provided by http://www.api-digital.com -- >> >> asterisk-users mailing list >> To UNSUBSCRIBE or update options visit: >> http://lists.digium.com/mailman/listinfo/asterisk-users > > Tim Panton - Web/VoIP consultant and implementor www.westhawk.co.uk > > >Tim Panton - Web/VoIP consultant and implementor www.westhawk.co.uk