GDF / GSS - Text to speech synthesis no audio

[Maharaja Azhagiah]

Hi All,

I am newbie to unimrcp and Google SS and DF. 

I have created unimrcp profiles in Freeswitch and configured unimrcp server. I tried simple TTS using GSS. However, there is no audio in the call. 

Link to logs for  mrcp profiles, dialplan and logs from FS and unimrcp server is here. 

Kindly guide me what's wrong with the configuration or dialplan. 

Thank you in advance

[Maharaja Azhagiah]

Furthermore, I ran a packet capture and can hear audio from unimrcp server to FS. But the same is not being sent to PSTN / caller from FS. 

[Maharaja Azhagiah]

Hi All,

Can anyone help me here?

[Arsen Chaloyan]

Hi Maharaja,

Everything indeed looks good in the server logs. The problem is in your FS which actually did not receive any RTP packets.

Here is the log statement from the UniMRCP server indicating 79 RTP packets were sent.

2023-01-17 23:53:50:631722 [INFO]   Close RTP Transmitter 172.105.15.42:5000 -> 172.105.106.211:5030 [s:79 o:12640]

Nevertheless, the FS received no RTP packets.

2023-01-17 23:53:47.223479 97.03% [INFO] mpf_rtp_stream.c:537 () Close RTP Receiver 172.105.106.211:5030 <- 172.105.15.42:5000 [r:0 l:0 j:0 p:0 d:0 i:0]

Make sure the RTP port range is open in the firewall of your FS server.

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Arsen Chaloyan
Author of UniMRCP
http://www.unimrcp.org