Error - translate.c

Hi There,

I have TC400B Transcoder card in my asterisk server. I see below messages on console, any suggestion?

[Sep 3 13:43:07] WARNING[11802]: translate.c:175 framein: no samples for lintoulaw
[Sep 3 13:43:07] WARNING[11802]: translate.c:175 framein: no samples for lintoulaw
[Sep 3 13:43:07] WARNING[11802]: translate.c:175 framein: no samples for lintoulaw
[Sep 3 13:43:07] WARNING[11802]: translate.c:175 framein: no samples for lintoulaw
[Sep 3 13:43:07] WARNING[11802]: translate.c:175 framein: no samples for lintoulaw

thanks
ldp