[Freeswitch-users] Audio problems with unimrcp and Vestec ASR

[Peter Steinbach]

I have an Audio problem with unimrcp and Vestec ASR with mrcp v1.

This seems to be a similar problem to thread: "ASR from Freeswitch to MS 
Speech Server [using MRCP Connector] - Audio Problem"

What does work:

    * MRCP command are passed successsfull in both ways on port 1554
      (vestec mrcp server)
    * Grammar is accepted and recognition is started
    * I can see RTP stream (wireshark) from FS port 400x to the mrcp server
    * Result (002 no-input-timeout) is sent back to Freeeswicth and is
      processed by FS successfully.

What does NOT work:

    * RTP stream is always empty (silence), i grepped this on the
      network with ngrep, RTP data is empty, there is no change in the
      audio data when I speak.
    * so voice recognition will always time out (002 no-input-timeout)


Here are my configs:
unimrcp.conf.xml
<configuration name="unimrcp.conf" description="UniMRCP Client">
<settings>
<param name="default-tts-profile" value="unimrcpserver-mrcp1"/>
<param name="default-asr-profile" value="unimrcpserver-mrcp1"/>
<param name="log-level" value="DEBUG"/>
<param name="enable-profile-events" value="false"/>

<param name="max-connection-count" value="100"/>
<param name="offer-new-connection" value="1"/>
</settings>
<profiles>
<X-PRE-PROCESS cmd="include" data="../mrcp_profiles/*.xml"/>
</profiles>
</configuration>

unimrcpserver-mrcp-v1.xml
<include>
<!-- UniMRCP Server MRCPv1 -->
<profile name="unimrcpserver-mrcp1" version="1">
<param name="server-ip" value="192.168.178.180"/>
<param name="server-port" value="1554"/>
<param name="resource-location" value=""/>
<param name="speechsynth" value="speechsynthesizer"/>
<param name="speechrecog" value="speechrecognizer"/>
<param name="rtp-ip" value="auto"/>
<param name="rtp-port-min" value="4000"/>
<param name="rtp-port-max" value="5000"/>
<param name="codecs" value="PCMU PCMA L16/96/8000"/>
<synthparams>
</synthparams>
<!-- Add any default MRCP params for RECOGNIZE requests here -->
<recogparams>
<!--param name="start-input-timers" value="false"/-->
</recogparams>
</profile>
</include>

See logs here
http://pastebin.freeswitch.org/18570

Any help is appreciated.

Best egards
Peter

-- 
With kind regards
Peter Steinbach

Telefaks Services GmbH
mailto:lists (att) telefaks.de
Internet: www.telefaks.de


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