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Subject: [Bluez-devel] SCO transparent transmission
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Date: Tue, 4 Apr 2006 19:44:37 +0200

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Hi.

I'm trying to write an app for voice transmission between two laptops. When
using CVSD, the communication performs ok. However, I would need to transmi=
t
the PCM samples in a transparent mode, for after receiving a voice frame, I
must process the samples.

I have read in Bluetooth 2.0 specification that this can be done, for
example, with 0x0063 as voice settings. I have tried it with my Bluetooth
2.0+EDR dongles but it doesn't work properly. I transmit continuously a
frame with values 0x01 through 0x30, but in the receiver side and using
hcidump, I see that a brust of 0 is inserted in the middle of some frames
and there are hops in the sequence. For instance, I send 0x00 0x01 0x02 0x0=
3
0x04 .... 0x29 0x30, but I receive 0x2e 0x2f 0x30 0x00 0x01 0x02 0x2f 0x30
0x00 0x01.....

Have any of you tested it? Is there any solution to make what I try?

Thanks.

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Hi.<br>
<br>
I'm trying to write an app for voice transmission between two laptops.
When using CVSD, the communication performs ok. However, I would need
to transmit the PCM samples in a transparent mode, for after receiving
a voice frame, I must process the samples.<br>
<br>
I have read in Bluetooth 2.0 specification that this can be done, for
example, with 0x0063 as voice settings. I have tried it with my
Bluetooth 2.0+EDR dongles but it doesn't work properly. I transmit
continuously a frame with values 0x01 through 0x30, but in the receiver
side and using hcidump, I see that a brust of 0 is inserted in the
middle of some frames and there are hops in the sequence. For instance,
I send 0x00 0x01 0x02 0x03 0x04 .... 0x29 0x30, but I receive 0x2e 0x2f
0x30 0x00 0x01 0x02 0x2f 0x30 0x00 0x01.....<br>
<br>
Have any of you tested it? Is there any solution to make what I try?<br>
<br>
Thanks. <br>

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