On Sun, 2009-09-13 at 19:24 +0800, Cuneyt M wrote: > Hi Bernardo and Michael, > > We use that model of switches too as well as the latest 48-port model. > > I think whatever the problem is, it has almost the same pattern > somewhere. We are also using Polycom 330s. > Same firmware and ROM version (beside almost all version pair tests > that end up with same freezing) > > Interestingly using 2.2.2 with 4.x ROM was stable. But any version in > SIP 3.x ends-up with frequent freezes and users have to unplug-n-plug > manually (somewhat alienates the end-user). > > Now I am running 4.0.2, i dont think i can switch back to SIP 2.2.2 > due to the config files being generated by SIP server(?) > The version number for Polycom 330 phone profile is not shown anymore > as it did in earlier versions. > > Bernardo, what do you mean by the following comment (Wins record > relating to freeze)? > Can you please elaborate in details if possible? I can test the > pattern you found here since the issue is very similar. > > My dhcpd.conf looks like this; > range 192.168.1.40 192.168.1.246; > default-lease-time 86400; > max-lease-time 99999; > option routers 192.168.1.1; > option subnet-mask 255.255.255.0; > option domain-name ""; > option tftp-server-name "sipx.company.com"; > option sip-servers-name "sipx.company.com:12000/cmcprov/login$ > option domain-name-servers 192.168.1.2, 165.21.83.88, > 165.21.100.11; > option ntp-servers pool.ntp.org; > > > I have checked with Linksys and Polycom. Polycom 330 is a class 2 PoE > phone and Linksys provides class 2 PoE in those models (24 and 48 > ports). Taking into account they also sell these switches to Linksys > SPA phones with PoE, I believe they are not 'so' bad. Unfortunately I > didnt have a say in the purchase of the equipment and replacing them > with new (HP Procurve) is not very practical at this stage. > Therefore I am very much interested to find out what might be causing > this and how it can be addressed by other means. > > With limited options, i am trying to get my hands on to a HP Procurve > switch (they are pricey for a trial test run for sure). But that won't > be happening very soon... > > So any feedback or findings you might have will be highly appreciated.
I have not seen this problem (just seen it discussed a lot on the list), but it does sound like it's probably POE related. It seems reasonable to me that different software loads would have different power profiles. I've seen problems with POE when cable lengths or the number of phones on a switch were greater than what the switch could really drive, and if the phone is getting power that's not quite up to spec it could be causing the freeze. I've seen a LAN analyzer from Fluke that had some very nice POE tests in it (sorry - I don't remember the model, but it shouldn't be hard to find) - perhaps you could rent one? _______________________________________________ sipx-users mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipx-users Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-users sipXecs IP PBX -- http://www.sipfoundry.org/
