hi, Have you configured the config_site.h according to your device ?? if so then there should not be any prob for echo but the delay of max 5 seconds can be there. Please find the file attached. --- On Thu, 28/1/10, Re Mo <remo9071 at gmail.com> wrote: From: Re Mo <remo9071@xxxxxxxxx> Subject: Echo & Delay on VoIP call To: pjsip at lists.pjsip.org Date: Thursday, 28 January, 2010, 10:21 PM Hi all I am using PJSIP on Windows Mobile PPC/SMP phones, and I noticed that when making a VoIP call there is a substantial echo & delay heard byboth sides, but mostly on the destination side. I have already set the following parameters: media_cfg.ec_tail_len = 0 media_cfg.no_vad = true media_cfg.quality = 10 I would appreciate your advice on this.? Thx Remo -----Inline Attachment Follows----- _______________________________________________ Visit our blog: http://blog.pjsip.org pjsip mailing list pjsip at lists.pjsip.org http://lists.pjsip.org/mailman/listinfo/pjsip_lists.pjsip.org Your Mail works best with the New Yahoo Optimized IE8. Get it NOW! http://downloads.yahoo.com/in/internetexplorer/ -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20100129/b7364c06/attachment.html> -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: config_site.h URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20100129/b7364c06/attachment.h>