Dear all, I am in the process of developing IVR. So just planned to convert my application to handle the TTS voice engine which is supported by FreeSWITCH. Got the mod_unimrcp module which is used to recognize the speech and synthesize the text to voice. For building the mod_unimrcp modules done the following steps. Uncomment the mod_unimrcp line in the modules.conf file in the FreeSWITCH source Given make mod_unimrcp-install command. In modules.conf.xml uncomment the <load modue="mod_unimrcp"/> Configured the following dial plan <extension name="unimrcp"> <condition field="destination_number" expression="^4922$"> <action application="answer"/> <action application="set" data="tts_engine=unimrcp:nuance5-mrcp1"/> <action application="set" data="tts_voice=awb"/> <action application="speak" data="This is our Text to speech on FreeSWITCH"/> --> <action application="sleep" data="500"/> </condition> </extension> While making the call to 4922 got the following error in the FreeSWITCH console. [INFO] mod_dialplan_xml.c:418 Processing thangappan->4922 in context default [NOTICE] mod_dptools.c:717 Channel [sofia/internal/1012@192.168.1.222] has been answered [INFO] mod_unimrcp.c:1499 speech_handle: name = unimrcp, rate = 8000, speed = 0, samples = 160, voice = , engine = unimrcp, param = nuance5-mrcp1 [INFO] mod_unimrcp.c:1502 voice = awb, rate = 8000 [NOTICE] mrcp_client.c:549 Create MRCP Handle 0x8b02400 [nuance5-mrcp1] [INFO] mrcp_client_session.c:142 Create Channel 0x8b02400 <new> [INFO] mrcp_client_session.c:398 Receive App Request 0x8b02400 <new> [2] [NOTICE] rtsp_client.c:255 Create RTSP Handle 0x8b04408 [INFO] mrcp_client.c:901 Add MRCP Handle 0x8b02400 [NOTICE] mrcp_client_session.c:718 Add Control Channel 0x8b02400 <new@speechsynth> [INFO] mrcp_client_session.c:420 Send Offer 0x8b02400 <new> [c:0 a:1 v:0] *[ERR] mod_unimrcp.c:965 (TTS-0) Timed out waiting for channel to be ready [ERR] switch_ivr_play_say.c:2104 Invalid TTS module!* [NOTICE] switch_core_state_machine.c:185 sofia/internal/1012@192.168.1.222 has executed the last dialplan instruction, hanging up. [NOTICE] switch_core_state_machine.c:187 Hangup sofia/internal/1012@192.168.1.222 [CS_EXECUTE] [NORMAL_CLEARING] [NOTICE] switch_core_session.c:1179 Session 1 (sofia/internal/1012@192.168.1.222) Ended [NOTICE] switch_core_session.c:1181 Close Channel sofia/internal/1012@192.168.1.222 [CS_DESTROY] [NOTICE] switch_channel.c:669 New Channel sofia/internal/1012@192.168.1.222 [49ed5afa-79f0-11df-b531-3553f3a65c3c] So need to find a solution for that. -- Regards, Thangappan.M