Hi, Please check whether macro PJMEDIA_RTP_PT_TELEPHONE_EVENTS & PJMEDIA_RTP_PT_TELEPHONE_EVENTS_STR (payload type definition for DTMF) are set to non-zero, and then make sure there is rtpmap "telephone-event/8000" in the SDP negotiated. The macro is set to 101 by default in pjmedia/config.h. Regards, nanang 2008/6/25 vopjessie <jessievop at hotmail.com>: > Hi all, when i run pjsua.exe as two different clients and try to send dtmf > to each other by following steps: > - run pjsua.exe > - type in(on both clients): Cp > - type in(on both clients): PCMU 200 > - type in(on one client): # > - type in(on one client): 123 > > then i get the following message: > pjsua_app.c Unable to send DTMF: Remote does not support RFC 2833 > (PJMEDIA_RTP_EREMNORFC2833) [status=220107] > > Could someone tell me what goes wrong here, and how to fix it? > > thanks in advance! > > -Jessica > > > ------------------------------ > "?????????" ????? <http://get.live.cn> > > _______________________________________________ > 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 > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20080625/515400a6/attachment-0001.html