Hello Yes I did. It generates two files: ivr-unavailable-8000.wav.0 and ivr-unavailable-8000.wav.8 在 2017-11-16 15:50:05，"Rick Barenthin" <dunst0(a)gmail.com> 写道： Hello, Did you have used the makeann from rtpproxy? Quoting from manual: "Instruct the RTPproxy to stream prompt/announcement pre-encoded with the makeann command from the RTPproxy distribution." Am 15.11.2017 07:59 schrieb "赵国杰" <zhaoguojie2010(a)163.com>om>: Hello guys, I googled the problem and came up with the following solution request_route { ... if (rtpproxy_offer()) t_on_reply("FORCE_RTPPROXY"); rtpproxy_stream2uac("/etc/kamailio/moh/ivr-unavailable-8000.wav", "-1"); t_newtran(); http_async_query("url here", "HTTP_REPLY"); } route[HTTP_REPLY] { ... # forward the invite to ua2 } on rtpproxy server,I got the following log: INFO:siy6BoTWsN-w8cTbn9lRfnQV08Atsp6i:rtpp_stream_handle_play: -1 times playing prompt /etc/kamailio/moh/ivr-unavailable-8000.wav codec 8: SSRC=0x74A2C220, seq=10235 However the caller has no audio, can anyone help? Thanks At 2017-11-14 18:04:13, "赵国杰" <zhaoguojie2010(a)163.com> wrote: Hello guys, I have the following senario: ua1 calls ua2. when the INVITE reaches the kamailio, before foward to ua2, kamailio has to do a http request using “http_async_query”. However, the http request can take a really long time. I want the kamailio start playing music when the http request is sent and stop the music when the http response is received. My config file is like this: request_route { ... t_newtran(); http_async_query("url here", "HTTP_REPLY"); } route[HTTP_REPLY] { ... # forward the invite to ua2 } how do i complete the config? Thanks _______________________________________________ Kamailio (SER) - Users Mailing List sr-users(a)lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users