Dear All, I'm trying to implement the sample PJSIP application mentioned under the following link: http://www.pjsip.org/pjsip/docs/html/page_pjsip_sample_simple_pjsuaua_c.htm Using the application I'm successfully able to test inbound and outbound calls, but the problem is with the audio. I'm not able to hear/speak anything from my application side. In my application I received the following message: sound_port.c EC suspended because of inactivity Can anyone tell me the solution for this problem. Note: I'm using 3cx as the remote end softphone. Server is Asterisk PBX. Thanks & Regards, - Senthil -------------------------------------------------------------------- mail2web LIVE ? Free email based on Microsoft? Exchange technology - http://link.mail2web.com/LIVE