[Asterisk-video] AMR: WARNING[4493]: translate.c:175 framein: no samples for amrtolin

[Klaus Darilion]

Patrick schrieb:
> Hi,
> 
> I just built asterisk 1.4.21 with AMR from fontventa (svn version 213).
> When I call from my Nokia N95 via GPRS to my Asterisk box or vice versa
> using the AMR codec I see a ton of the following messages in the
> Asterisk console:
> 
> [Jun 19 19:38:16] WARNING[4493]: translate.c:175 framein: no samples for amrtolin

strange. It would be interesting what's the cause of the message. Is 
there a AST_FRAME_AUDIO without payload?
> 
> Is this message an indication of a bug in codec_amr?

Depends on where the log message is located. If the log message happens 
before the AMR frame is sent to the AMR codec (for decoding into linear) 
then it maybe a bug in the h324m gateway, in libh324m or in the phone.

Do you have the same results with another phone?

> 
> There's also a lot of delay (more than 2 seconds) when saying something
> on the N95 and hearing it on the Cisco phone attached to the Asterisk
> box. Strangely saying something on the Cisco phone can be heard almost
> instantaneously on the N95. On the other hand when I talk longer on the

Strange. Usually the SIP->3G direction is more problematic.

Do you also have video? Is video delayed too?

> N95, the delay before hearing it on the Cisco gets longer too up to 4 or
> 5 seconds. Seems like something gets buffered way too much before it is
> sent on.
> 
> I also tested AMR with a Wifi connection on the N95 and that works much
> better although I still see a ton of those messages above in the
> Asterisk console. Using ILBC as the codec has no problems with a GPRS or
> Wifi connection on the N95 so it really seems this issue is AMR related
> (codec or N95).

Is this a pure SIP->SIP call? Then the bug is obviously in the AMR codec 
  or in the phone.

> 
> Would anyone have a suggestion how to fix this?

1. try another phone and see if you have the same results
2. try to increase the log level (logger.conf)
3. review the source code to see when this message is printed


regards
klaus