I have successfully integrated voiceage g729 with pjsip. But, there is a problem. A is pjusa, B is another sip phone. A is talking with B, B press hold key, then A start to listen to hold music. After a while, B press unhold key, music stop. Then B can hear A's voice, but A can not hear B's voice. What's the problem? -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20080403/eca85a79/attachment.html