On Jan 30, 2008 5:48 PM, Matthew J. Roth <[EMAIL PROTECTED]> wrote: > Tomasz Zieleniewski wrote: > > I am using Debian OS kernel 2.6.22-3-amd64 > > and zaptel driver 1.4 with ztdummy module for meetme application. > > I use meetme with SIP channels. > > > > I have such problem that when one connects to the conference voice is > > "cut". > > Each voice sequence is disturbed. > > > > Does any one have similar issue and could give me some advice?? > Tomasz, > > Have you run zttest on the system? It verifies the accuracy of your > timing source. Digium recommends an accuracy of at least 99.98%. If > your accuracy is less than that it's probably the source of your problem. >
ztttest results show value below 99,98: [EMAIL PROTECTED]:~/src/zaptel-1.4$ ./zttest -v -c 5 Opened pseudo zap interface, measuring accuracy... 8192 zaptel samples in 4096.232 system clock sample intervals (50.003%) 8192 zaptel samples in 4064.232 system clock sample intervals (49.612%) 8192 zaptel samples in 4096.232 system clock sample intervals (50.003%) 8192 zaptel samples in 4096.240 system clock sample intervals (50.003%) 8192 zaptel samples in 4096.232 system clock sample intervals (50.003%) 8192 zaptel samples in 4096.232 system clock sample intervals (50.003%) 8192 zaptel samples in 4096.232 system clock sample intervals (50.003%) 8192 zaptel samples in 4064.232 system clock sample intervals (49.612%) 8192 zaptel samples in 4096.232 system clock sample intervals (50.003%) 8192 zaptel samples in 4096.232 system clock sample intervals (50.003%) 8192 zaptel samples in 4096.240 system clock sample intervals (50.003%) --- Results after 11 passes --- Best: 50.003 -- Worst: 49.612 -- Average: 49.931827, Difference: 49.931827 > > Luckily, it's a problem with multiple solutions. The following thread > documents some kernel configuration changes that you can make to improve > the quality of ztdummy as a timing source: > > Recommendations for kernel config > <http://lists.digium.com/pipermail/asterisk-users/2007-October/197778.html > > > Do You know how can I check and set kernel timer frequency? > > > My preferred solution is to use an empty TDM400P as a timing source. It > will cost you a little bit of money, but it's an easy way to reliably > solve your problem. You'll find a few posts about it if you search the > list, but this one has most of the information you'll need: > > Empty Wildcard TDM400P as a MeetMe timer. > <http://lists.digium.com/pipermail/asterisk-users/2007-March/182005.html> > > Regards, > > Matthew Roth > InterMedia Marketing Solutions > Software Engineer and Systems Developer > > > _______________________________________________ > -- 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 >
_______________________________________________ -- 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
