bluetooth a2dp & handsfree switch problem

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hello,

I have a wireless stereo headset supporting both a2dp and handsfree
profile.
>>From the windows mobile 5.0, I had paired the device and enable both
services
for use.

While running media player with the a2dp as my audio output device and
an
incoming call is detected, the media player will be paused and I am
alerted of
the call. But once the call is accepted by pressing the wireless
headset button
and an sco connection is being established to the wireless headset, the
hcibcsp
driver will close down due to "tx retry limit reach". After that, I
can no longer
use the bluetooth functionality without doing a reset.

>>From the hcibcsp log, the packet being sent is 2a 20 06 00 02 00 41 00
12 08
as a response to the received packet 2a 20 07 00 03 00 42 00 10 08 04.
During the 20 retries, I am still receving data from the bt chip. Data
received are
usually pure ack packet thru unreliable channel without any payload.
But these
packets are no longer processed because I believe there is no pending
HCI_ReadPacket() from the bluetooth stack.

Has anyone encounter this scenario? What are the factors that will
prevent the
bluetooth stack from calling HCI_ReadPacket()?

thanks in advance

regards,
jing

.

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