How to check whether it's wrong or not? Thanks, Yury. --- Timothy McKee <[EMAIL PROTECTED]> wrote:
> sounds like an issue with ztdummy, the timing source > for outbound audio. > > tim mckee > > On Dec 13, 2006, at 10:27 AM, Bruce Robertson wrote: > > > We are trying to solve an issue affecting Astlinux > installed on a > > Soekris 4801-60 (266 MHz, 256MB RAM, booting off a > CF card). We used > > Astlinux as the basis for an IVR application - it > basically plays a > > series of sound files for a caller. Most > everything works great in the > > application, but it is plagued by the sound the > caller hears - the > > sound > > breaks up. It is also playing the sound files, one > after another, more > > slowly than it should. Im hoping someone will > have advice, since > > nothing we try has solved the issues - especially > of the audio > > breaking up. > > > > Were using Astlinux ver 0.3. Running the > application on both a voip > > connection (a byod provider) and on a POTS line > with a handytone 488. > > Sound files are G.711 ulaw. The source files (the > original wav files) > > are good quality (I have a digital recording > studio which is used to > > create telephony audio all day) On the voip > connection, the audio > > quality is very poor, and the call breaks up > rather badly. On the POTS > > connection, using the handytone, the audio quality > is much better, and > > fewer breakups. But that is only when there is one > caller on the > > system. > > If, for example, we call in on both the POTS line > and the voip > > connection simultaneously, BOTH calls break up > badly, and both seem to > > hesitate when going from one sound file to the > next. And we have > > tested > > with only 2 calls at a time. Cant imagine how bad > it would be if > > we had > > 5 callers on the system at once. > > > > net4801 works in "Asterisk-Only mode" with eth0 > connected to internet. > > net4801 uses second ethernet port (eth1) to > connect to Handytone-488, > > which works like a bridge allowing net4801 to > terminate calls from > > PSTN > > line. We bring up eth1 manually using ifconfig > (INTIF is commented out > > in rc.conf), so there is no firewall or dhcp > server running on eth1. > > > > Our first thought was that the voip provider is > poor, we are losing > > packets, the net connection isnt fast enough - > all those things. But > > the problem of breaking up also affects the POTS > call, which has > > nothing > > to do with voip. > > > > It almost seems like the Soekris 4801 isnt > powerful enough to run > > this > > application (which is really nothing but Astlinux > with a bit of > > code on > > the side). But when we check CPU usage while a > call is in progress, it > > shows about 95% of CPU processing UNused. Its > seems like the CPU > > is not > > straining at all to process the call - it just > sounds like it is when > > you hear it on a phone. > > > > By the way, these issues occur on two separate > Soekris 4801's that are > > both running the same application in different > locations. > > > > Can anyone suggest a solution? Thanks! > > > > Bruce Robertson > > _______________________________________________ > > Astlinux-users mailing list > > [email protected] > > > http://lists.kriscompanies.com/mailman/listinfo/astlinux-users > > > > Donations to support AstLinux are graciously > accepted via PayPal to > > [EMAIL PROTECTED] > > ============= > Timothy McKee > VP, Network Services > SDN Global > +1-704-587-4829 work > +1-704-587-4830 NOCC > > > > > _______________________________________________ > Astlinux-users mailing list > [email protected] > http://lists.kriscompanies.com/mailman/listinfo/astlinux-users > > Donations to support AstLinux are graciously > accepted via PayPal to [EMAIL PROTECTED] > ____________________________________________________________________________________ Want to start your own business? Learn how on Yahoo! Small Business. http://smallbusiness.yahoo.com/r-index _______________________________________________ Astlinux-users mailing list [email protected] http://lists.kriscompanies.com/mailman/listinfo/astlinux-users Donations to support AstLinux are graciously accepted via PayPal to [EMAIL PROTECTED]
