[Asterisk-Dev] SPAM MESSAGE - [Asterisk-Users] warning message (sound card) - when I run asterisk!!!

[Neo Jia]

All,
   After installing asterisk on Linux, I run "asterisk
-vvvc". But I got the following warning message:

chan_oss.so] => (OSS Console Channel Driver)
May 26 00:37:58 WARNING[-1084845952]: chan_oss.c:980
load_module: XXX I don't work right with non-full
duplex sound cards XXX
  == Registered channel type 'Console' (OSS Console
Channel Driver)
  == Parsing '/etc/asterisk/oss.conf': Found
May 26 00:37:58 WARNING[-1168819280]: chan_oss.c:238
sound_thread: Read error on sound device: Resource
temporarily unavailable
 [chan_phone.so] => (Linux Telephony API Support)
  == Parsing '/etc/asterisk/phone.conf': Found
  == Registered channel type 'Phone' (Standard Linux
Telephony API Driver)

My sound card information:

Vendor : Intel Corp.
Model  : 82801CA/CAM AC'97 Audio Controller
Module : i810_audio

After running 'dial' command under the asterisk
prompt, I got the following message without any sound.

*CLI>     -- Executing Wait("OSS/dsp", "1") in new
stack
    -- Executing Answer("OSS/dsp", "") in new stack
 << Console call has been answered >>
    -- Executing DigitTimeout("OSS/dsp", "5") in new
stack
    -- Set Digit Timeout to 5
    -- Executing ResponseTimeout("OSS/dsp", "10") in
new stack
    -- Set Response Timeout to 10
    -- Executing BackGround("OSS/dsp",
"demo-congrats") in new stack
May 26 00:40:55 WARNING[-1221268560]: chan_oss.c:408
soundcard_setinput: Unable to re-open DSP device:
Device or resource busy
May 26 00:40:55 WARNING[-1221268560]: chan_oss.c:567
oss_write: Unable to set device to input mode
May 26 00:40:55 WARNING[-1221268560]: file.c:537
ast_readaudio_callback: Failed to write frame
    -- Playing 'demo-congrats' (language 'en')
  == Spawn extension (local, s, 5) exited non-zero on
'OSS/dsp'

Is there anyone can give me any hints or help?

Thanks,
Neo