ARI Playback failing - sometimes


I am using ARI to play a message and the playback audio is fine most of the time. However every once in a while I get a playback failed.

I can download the audio file with no issues. So there has to be something else in asterisk going on that I am trying to narrow down but cant figure out how to.

[Dec 3 12:08:03] WARNING[3291407]: res_stasis_playback.c:276 playback_final_update: chan-9c210832: Playback failed for sound:

Any help on troubleshooting this would be helpful.



Some more info all channels are ULAW no g729/g722. Calls are on a SIP trunk out to a voip provider.

TCP Dump show the server checking to see if the file changed, so using local asterisk cache

HEAD /audio_cache/recording.wav HTTP/1.1
User-Agent: asterisk-libcurl-agent/1.0
Accept: /
If-None-Match: “124ad4-5b553ee254ecd”

HTTP/1.1 304 Not Modified
Date: Thu, 03 Dec 2020 18:06:33 GMT
Server: Apache/2.4.41 (Ubuntu)
ETag: “124ad4-5b553ee254ecd”

Sox info
sox --info recording.wav

Input File : ‘recording.wav’
Channels : 1
Sample Rate : 8000
Precision : 16-bit
Duration : 00:01:14.92 = 599380 samples ~ 5619.19 CDDA sectors
File Size : 1.20M
Bit Rate : 128k
Sample Encoding: 16-bit Signed Integer PCM

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