----- Original Message ----- From: "Nic Bellamy" <[EMAIL PROTECTED]> To: "Asterisk Users Mailing List - Non-Commercial Discussion" <[email protected]> Sent: Thursday, February 15, 2007 8:53 PM Subject: Re: [asterisk-users] The High Performance Echo Canceller (HPEC)
> Wireless wrote: > > Does anyone know if the HPEC will work on a Sangoma A200 / 2 port FXO card? > > (I'm assuming so as it still uses Zapel) I've 2 PSTN lines one of which I > > cannot get rid of the echo, I've tried a 2GHz machine as apposed to my > > normal P3 650MHz and this made no difference. Would the 650Mhz be enough to > > run HPEC on one line (I assume only needing one licence) > > > It should work, providing all the Wanpipe stuff is ready to work with > Zaptel 1.2.13. > > As far as performance, you should be able to get one, maybe two channels > of 1024 tap cancellation on the P3, but I'd advise careful testing, > perhaps even using oprofile for a while to keep an eye on what's using what. > > You also have to watch out extra carefully due to the following: HPEC > works in "sparse" mode, meaning it can cover 1024 taps, but just cancels > echo in the parts where there is echo - hence CPU usage will likely > change quite a bit with different echo paths - ie. a simple single > reflection path will use less CPU than a complicated path with more than > one reflection. > > Cheers, > Nic. > > -- > Nic Bellamy, > Head Of Engineering, Vadacom Ltd - http://www.vadacom.co.nz/ > Thanks Nic, I have bought a couple of HPEC channel licences from Digium and been trying to get them working, all seems fine until I get to 9 and 10 of this doc ftp://ftp.digium.com/pub/telephony/hpec/README - at which point Asterisk is not running and I've issued a: "wanrouter start" command and all looks good. 9 says type [EMAIL PROTECTED] ~]# modprobe zaptel which returns nothing... when I run 10 [EMAIL PROTECTED] ~]# ./zaphpec_enable I get - No valid licenses for HPEC found. If anyone can shed I bit of light on how to register my licence I'd be very greatful, I've checked in /var/lib/digium/licenses and there is a licence there. Thanks Harvey _______________________________________________ --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
