[BUG] Using bluez 5.5 & pulseaudio a bluetooth headset cannot be used as a recording device.

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> It seems the SCO link (the actual audio stream) is up but there's no
> audio flowing.
>
> That's what I am saying. I presume the headset needs a RING AT command, then
> listen for the accept button to be pressed on the headset then initiate the
> audio connection. But as i said, play() doesn't work with python like my
> stackoverflow example shows.

This is from a manual

http://i.imgur.com/4mzT81w.jpg

What does that tell you?
> Which hardware are you testing this on? You mentioned you're using a
> raspberry pi, which I believe doesn't have a built-in bluetooth chip.
> Are you using some conventional USB dongle?
>
> An expensive belkin bluetooth 4.0+ adapter.
Rasperry Pi
>
>
> I ask this because the hardware could be set up for SCO over PCM (as
> opposed to SCO over HCI) which would lead to the described behavior.
>
> Otherwise, assuming it's SCO over HCI, the hcidump above would be
> pretty bad. I haven't seen this before but it's definitely possible
> that the headset doesn't send any audio unless it receives some, which
> is not happening in this case.
>
> You should be able to confirm this by sending some audio to the
> headset with paplay during the recording, and checking if parecord
> works during this time. hcidump would be interesting here too.
>
> This is what I did
>
> hcidump > ausgabehci.txt &
> Without sudo?
I did it again with sudo and starting the headset, the recording 
sequence and I got this:

HCI sniffer - Bluetooth packet analyzer ver 2.4
device: hci0 snap_len: 1028 filter: 0xffffffff
 > HCI Event: Connect Request (0x04) plen 10
     bdaddr 00:1A:7D:11:C0:66 class 0x240404 type ACL
< HCI Command: Accept Connection Request (0x01|0x0009) plen 7
     bdaddr 00:1A:7D:11:C0:66 role 0x00
     Role: Master
 > HCI Event: Command Status (0x0f) plen 4
     Accept Connection Request (0x01|0x0009) status 0x00 ncmd 1
 > HCI Event: Role Change (0x12) plen 8
     status 0x00 bdaddr 00:1A:7D:11:C0:66 role 0x00
     Role: Master
 > HCI Event: Connect Complete (0x03) plen 11
     status 0x00 handle 11 bdaddr 00:1A:7D:11:C0:66 type ACL encrypt 0x00
< HCI Command: Read Remote Supported Features (0x01|0x001b) plen 2
     handle 11
 > HCI Event: Command Status (0x0f) plen 4
     Read Remote Supported Features (0x01|0x001b) status 0x00 ncmd 1
 > HCI Event: Max Slots Change (0x1b) plen 3
     handle 11 slots 5
 > HCI Event: Read Remote Supported Features (0x0b) plen 11
     status 0x00 handle 11
     Features: 0xff 0xfe 0x0f 0xc6 0x8b 0xef 0x59 0x83
< HCI Command: Read Remote Extended Features (0x01|0x001c) plen 3
     handle 11 page 1
 > HCI Event: Command Status (0x0f) plen 4
     Read Remote Extended Features (0x01|0x001c) status 0x00 ncmd 1
 > HCI Event: Read Remote Extended Features (0x23) plen 13
     status 0x00 handle 11 page 1 max 1
     Features: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00
< HCI Command: Remote Name Request (0x01|0x0019) plen 10
     bdaddr 00:1A:7D:11:C0:66 mode 2 clkoffset 0x0000
 > ACL data: handle 11 flags 0x02 dlen 12
     L2CAP(s): Connect req: psm 1 scid 0x0040
 > HCI Event: Command Status (0x0f) plen 4
     Remote Name Request (0x01|0x0019) status 0x00 ncmd 1
< ACL data: handle 11 flags 0x00 dlen 16
     L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 1 status 0
       Connection pending - No futher information available
< ACL data: handle 11 flags 0x00 dlen 10
     L2CAP(s): Info req: type 2
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
 > ACL data: handle 11 flags 0x02 dlen 16
     L2CAP(s): Info rsp: type 2 result 0
       Extended feature mask 0x0000
< ACL data: handle 11 flags 0x00 dlen 16
     L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 0 status 0
       Connection successful
< ACL data: handle 11 flags 0x00 dlen 12
     L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 0
 > ACL data: handle 11 flags 0x02 dlen 16
     L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 4
       MTU 48
< ACL data: handle 11 flags 0x00 dlen 18
     L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 4
       MTU 48
 > ACL data: handle 11 flags 0x02 dlen 14
     L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 0
       Success
 > ACL data: handle 11 flags 0x02 dlen 24
     L2CAP(d): cid 0x0040 len 20 [psm 1]
         SDP SSA Req: tid 0x1 len 0xf
           pat uuid-32 0x111f (Handsfree AG)
           max 38
           aid(s) 0x0004 (ProtocolDescList)
           cont 00
 > HCI Event: Remote Name Req Complete (0x07) plen 255
     status 0x00 bdaddr 00:1A:7D:11:C0:66 name 'Iqua Slim'
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
< ACL data: handle 11 flags 0x00 dlen 33
     L2CAP(d): cid 0x0040 len 29 [psm 1]
         SDP SSA Rsp: tid 0x1 len 0x18
           count 21
           record #0
               aid 0x0004 (ProtocolDescList)
                  < < uuid-16 0x0100 (L2CAP) > <
                  uuid-16 0x0003 (RFCOMM) uint 0xd > >
           cont 00
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
 > ACL data: handle 11 flags 0x02 dlen 12
     L2CAP(s): Disconn req: dcid 0x0040 scid 0x0040
< ACL data: handle 11 flags 0x00 dlen 12
     L2CAP(s): Disconn rsp: dcid 0x0040 scid 0x0040
 > HCI Event: Link Key Request (0x17) plen 6
     bdaddr 00:1A:7D:11:C0:66
< HCI Command: Link Key Request Reply (0x01|0x000b) plen 22
     bdaddr 00:1A:7D:11:C0:66 key 4118887B24F8519BEBF20B626C48413E
 > HCI Event: Command Complete (0x0e) plen 10
     Link Key Request Reply (0x01|0x000b) ncmd 1
     status 0x00 bdaddr 00:1A:7D:11:C0:66
 > HCI Event: Encrypt Change (0x08) plen 4
     status 0x00 handle 11 encrypt 0x01
 > ACL data: handle 11 flags 0x02 dlen 12
     L2CAP(s): Connect req: psm 3 scid 0x0041
< ACL data: handle 11 flags 0x00 dlen 16
     L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0041 result 0 status 0
       Connection successful
< ACL data: handle 11 flags 0x00 dlen 16
     L2CAP(s): Config req: dcid 0x0041 flags 0x00 clen 4
       MTU 1013
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
 > ACL data: handle 11 flags 0x02 dlen 16
     L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 4
       MTU 895
< ACL data: handle 11 flags 0x00 dlen 18
     L2CAP(s): Config rsp: scid 0x0041 flags 0x00 result 0 clen 4
       MTU 895
 > ACL data: handle 11 flags 0x02 dlen 18
     L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 4
       MTU 1013
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
 > ACL data: handle 11 flags 0x02 dlen 8
     L2CAP(d): cid 0x0040 len 4 [psm 3]
       RFCOMM(s): SABM: cr 1 dlci 0 pf 1 ilen 0 fcs 0x1c
< ACL data: handle 11 flags 0x00 dlen 8
     L2CAP(d): cid 0x0041 len 4 [psm 3]
       RFCOMM(s): UA: cr 1 dlci 0 pf 1 ilen 0 fcs 0xd7
 > ACL data: handle 11 flags 0x02 dlen 18
     L2CAP(d): cid 0x0040 len 14 [psm 3]
       RFCOMM(s): PN CMD: cr 1 dlci 0 pf 0 ilen 10 fcs 0x70 mcc_len 8
       dlci 26 frame_type 0 credit_flow 15 pri 0 ack_timer 0
       frame_size 126 max_retrans 0 credits 0
< ACL data: handle 11 flags 0x00 dlen 18
     L2CAP(d): cid 0x0041 len 14 [psm 3]
       RFCOMM(s): PN RSP: cr 0 dlci 0 pf 0 ilen 10 fcs 0xaa mcc_len 8
       dlci 26 frame_type 0 credit_flow 14 pri 0 ack_timer 0
       frame_size 126 max_retrans 0 credits 7
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
 > ACL data: handle 11 flags 0x02 dlen 8
     L2CAP(d): cid 0x0040 len 4 [psm 3]
       RFCOMM(s): SABM: cr 1 dlci 26 pf 1 ilen 0 fcs 0xe7
< HCI Command: Authentication Requested (0x01|0x0011) plen 2
     handle 11
 > HCI Event: Command Status (0x0f) plen 4
     Authentication Requested (0x01|0x0011) status 0x00 ncmd 1
 > HCI Event: Link Key Request (0x17) plen 6
     bdaddr 00:1A:7D:11:C0:66
< HCI Command: Link Key Request Reply (0x01|0x000b) plen 22
     bdaddr 00:1A:7D:11:C0:66 key 4118887B24F8519BEBF20B626C48413E
 > HCI Event: Command Complete (0x0e) plen 10
     Link Key Request Reply (0x01|0x000b) ncmd 1
     status 0x00 bdaddr 00:1A:7D:11:C0:66
 > HCI Event: Auth Complete (0x06) plen 3
     status 0x00 handle 11
< HCI Command: Set Connection Encryption (0x01|0x0013) plen 3
     handle 11 encrypt 0x01
 > HCI Event: Command Status (0x0f) plen 4
     Set Connection Encryption (0x01|0x0013) status 0x00 ncmd 1
 > HCI Event: Encryption Key Refresh Complete (0x30) plen 3
     status 0x00 handle 11
 > HCI Event: Encrypt Change (0x08) plen 4
     status 0x00 handle 11 encrypt 0x01
< ACL data: handle 11 flags 0x00 dlen 8
     L2CAP(d): cid 0x0041 len 4 [psm 3]
       RFCOMM(s): UA: cr 1 dlci 26 pf 1 ilen 0 fcs 0x2c
< ACL data: handle 11 flags 0x00 dlen 12
     L2CAP(d): cid 0x0041 len 8 [psm 3]
       RFCOMM(s): MSC CMD: cr 0 dlci 0 pf 0 ilen 4 fcs 0xaa mcc_len 2
       dlci 26 fc 0 rtc 1 rtr 1 ic 0 dv 1 b1 1 b2 0 b3 0 len 6
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
 > ACL data: handle 11 flags 0x02 dlen 12
     L2CAP(d): cid 0x0040 len 8 [psm 3]
       RFCOMM(s): MSC CMD: cr 1 dlci 0 pf 0 ilen 4 fcs 0x70 mcc_len 2
       dlci 26 fc 0 rtc 1 rtr 1 ic 0 dv 0 b1 1 b2 0 b3 0 len 6
< ACL data: handle 11 flags 0x00 dlen 12
     L2CAP(d): cid 0x0041 len 8 [psm 3]
       RFCOMM(s): MSC RSP: cr 0 dlci 0 pf 0 ilen 4 fcs 0xaa mcc_len 2
       dlci 26 fc 0 rtc 1 rtr 1 ic 0 dv 0 b1 1 b2 0 b3 0 len 6
 > ACL data: handle 11 flags 0x02 dlen 12
     L2CAP(d): cid 0x0040 len 8 [psm 3]
       RFCOMM(s): MSC RSP: cr 1 dlci 0 pf 0 ilen 4 fcs 0x70 mcc_len 2
       dlci 26 fc 0 rtc 1 rtr 1 ic 0 dv 1 b1 1 b2 0 b3 0 len 6
< ACL data: handle 11 flags 0x00 dlen 9
     L2CAP(d): cid 0x0041 len 5 [psm 3]
       RFCOMM(d): UIH: cr 0 dlci 26 pf 1 ilen 0 fcs 0x22 credits 33
 > ACL data: handle 11 flags 0x02 dlen 9
     L2CAP(d): cid 0x0040 len 5 [psm 3]
       RFCOMM(d): UIH: cr 1 dlci 26 pf 1 ilen 0 fcs 0xf8 credits 15
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
 > ACL data: handle 11 flags 0x02 dlen 19
     L2CAP(d): cid 0x0040 len 15 [psm 3]
       RFCOMM(d): UIH: cr 1 dlci 26 pf 0 ilen 11 fcs 0xe4
< ACL data: handle 11 flags 0x00 dlen 22
     L2CAP(d): cid 0x0041 len 18 [psm 3]
       RFCOMM(d): UIH: cr 0 dlci 26 pf 0 ilen 14 fcs 0x3e
< ACL data: handle 11 flags 0x00 dlen 14
     L2CAP(d): cid 0x0041 len 10 [psm 3]
       RFCOMM(d): UIH: cr 0 dlci 26 pf 0 ilen 6 fcs 0x3e
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
 > ACL data: handle 11 flags 0x02 dlen 19
     L2CAP(d): cid 0x0040 len 15 [psm 3]
       RFCOMM(d): UIH: cr 1 dlci 26 pf 1 ilen 10 fcs 0xf8 credits 2
< ACL data: handle 11 flags 0x00 dlen 134
     L2CAP(d): cid 0x0041 len 130 [psm 3]
       RFCOMM(d): UIH: cr 0 dlci 26 pf 0 ilen 126 fcs 0x3e
< ACL data: handle 11 flags 0x00 dlen 14
     L2CAP(d): cid 0x0041 len 10 [psm 3]
       RFCOMM(d): UIH: cr 0 dlci 26 pf 0 ilen 6 fcs 0x3e
< ACL data: handle 11 flags 0x00 dlen 14
     L2CAP(d): cid 0x0041 len 10 [psm 3]
       RFCOMM(d): UIH: cr 0 dlci 26 pf 0 ilen 6 fcs 0x3e
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
 > ACL data: handle 11 flags 0x02 dlen 18
     L2CAP(d): cid 0x0040 len 14 [psm 3]
       RFCOMM(d): UIH: cr 1 dlci 26 pf 1 ilen 9 fcs 0xf8 credits 3
< ACL data: handle 11 flags 0x00 dlen 32
     L2CAP(d): cid 0x0041 len 28 [psm 3]
       RFCOMM(d): UIH: cr 0 dlci 26 pf 0 ilen 24 fcs 0x3e
< ACL data: handle 11 flags 0x00 dlen 14
     L2CAP(d): cid 0x0041 len 10 [psm 3]
       RFCOMM(d): UIH: cr 0 dlci 26 pf 0 ilen 6 fcs 0x3e
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
 > ACL data: handle 11 flags 0x02 dlen 28
     L2CAP(d): cid 0x0040 len 24 [psm 3]
       RFCOMM(d): UIH: cr 1 dlci 26 pf 1 ilen 19 fcs 0xf8 credits 2
< ACL data: handle 11 flags 0x00 dlen 14
     L2CAP(d): cid 0x0041 len 10 [psm 3]
       RFCOMM(d): UIH: cr 0 dlci 26 pf 0 ilen 6 fcs 0x3e
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
 > ACL data: handle 11 flags 0x02 dlen 19
     L2CAP(d): cid 0x0040 len 15 [psm 3]
       RFCOMM(d): UIH: cr 1 dlci 26 pf 1 ilen 10 fcs 0xf8 credits 1
< ACL data: handle 11 flags 0x00 dlen 14
     L2CAP(d): cid 0x0041 len 10 [psm 3]
       RFCOMM(d): UIH: cr 0 dlci 26 pf 0 ilen 6 fcs 0x3e
 > ACL data: handle 11 flags 0x02 dlen 12
     L2CAP(s): Connect req: psm 1 scid 0x0042
< ACL data: handle 11 flags 0x00 dlen 16
     L2CAP(s): Connect rsp: dcid 0x0041 scid 0x0042 result 0 status 0
       Connection successful
< ACL data: handle 11 flags 0x00 dlen 12
     L2CAP(s): Config req: dcid 0x0042 flags 0x00 clen 0
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
 > ACL data: handle 11 flags 0x02 dlen 16
     L2CAP(s): Config req: dcid 0x0041 flags 0x00 clen 4
       MTU 48
< ACL data: handle 11 flags 0x00 dlen 18
     L2CAP(s): Config rsp: scid 0x0042 flags 0x00 result 0 clen 4
       MTU 48
 > ACL data: handle 11 flags 0x02 dlen 14
     L2CAP(s): Config rsp: scid 0x0041 flags 0x00 result 0 clen 0
       Success
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
 > ACL data: handle 11 flags 0x02 dlen 19
     L2CAP(d): cid 0x0040 len 15 [psm 3]
       RFCOMM(d): UIH: cr 1 dlci 26 pf 1 ilen 10 fcs 0xf8 credits 1
 > ACL data: handle 11 flags 0x02 dlen 24
     L2CAP(d): cid 0x0041 len 20 [psm 1]
         SDP SSA Req: tid 0x1 len 0xf
           pat uuid-32 0x111f (Handsfree AG)
           max 38
           aid(s) 0x0009 (BTProfileDescList)
           cont 00
< ACL data: handle 11 flags 0x00 dlen 14
     L2CAP(d): cid 0x0041 len 10 [psm 3]
       RFCOMM(d): UIH: cr 0 dlci 26 pf 0 ilen 6 fcs 0x3e
< ACL data: handle 11 flags 0x00 dlen 29
     L2CAP(d): cid 0x0042 len 25 [psm 1]
         SDP SSA Rsp: tid 0x1 len 0x14
           count 17
           record #0
               aid 0x0009 (BTProfileDescList)
                  < < uuid-16 0x111e (Handsfree) uint 0x105 > >
           cont 00
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
 > ACL data: handle 11 flags 0x02 dlen 12
     L2CAP(s): Disconn req: dcid 0x0041 scid 0x0042
< ACL data: handle 11 flags 0x00 dlen 12
     L2CAP(s): Disconn rsp: dcid 0x0041 scid 0x0042
 > ACL data: handle 11 flags 0x02 dlen 30
     L2CAP(d): cid 0x0040 len 26 [psm 3]
       RFCOMM(d): UIH: cr 1 dlci 26 pf 1 ilen 21 fcs 0xf8 credits 1
< ACL data: handle 11 flags 0x00 dlen 17
     L2CAP(d): cid 0x0041 len 13 [psm 3]
       RFCOMM(d): UIH: cr 0 dlci 26 pf 0 ilen 9 fcs 0x3e
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
< ACL data: handle 11 flags 0x00 dlen 12
     L2CAP(s): Connect req: psm 25 scid 0x0041
 > ACL data: handle 11 flags 0x02 dlen 16
     L2CAP(s): Connect rsp: dcid 0x0043 scid 0x0041 result 1 status 2
       Connection pending - Authorization pending
 > ACL data: handle 11 flags 0x02 dlen 16
     L2CAP(s): Connect rsp: dcid 0x0043 scid 0x0041 result 0 status 0
       Connection successful
< ACL data: handle 11 flags 0x00 dlen 12
     L2CAP(s): Config req: dcid 0x0043 flags 0x00 clen 0
 > ACL data: handle 11 flags 0x02 dlen 16
     L2CAP(s): Config req: dcid 0x0041 flags 0x00 clen 4
       MTU 895
< ACL data: handle 11 flags 0x00 dlen 18
     L2CAP(s): Config rsp: scid 0x0043 flags 0x00 result 0 clen 4
       MTU 895
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
 > ACL data: handle 11 flags 0x02 dlen 14
     L2CAP(s): Config rsp: scid 0x0041 flags 0x00 result 0 clen 0
       Success
< ACL data: handle 11 flags 0x00 dlen 12
     L2CAP(s): Connect req: psm 23 scid 0x0042
< ACL data: handle 11 flags 0x00 dlen 6
     L2CAP(d): cid 0x0043 len 2 [psm 25]
       AVDTP(s): Discover cmd: transaction 0 nsp 0x00
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
 > ACL data: handle 11 flags 0x02 dlen 16
     L2CAP(s): Connect rsp: dcid 0x0044 scid 0x0042 result 1 status 2
       Connection pending - Authorization pending
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 1
 > ACL data: handle 11 flags 0x02 dlen 8
     L2CAP(d): cid 0x0041 len 4 [psm 25]
       AVDTP(s): Discover rsp: transaction 0 nsp 0x00
         ACP SEID 1 - Audio Sink
< ACL data: handle 11 flags 0x00 dlen 7
     L2CAP(d): cid 0x0043 len 3 [psm 25]
       AVDTP(s): Capabilities cmd: transaction 1 nsp 0x00
         ACP SEID 1
 > ACL data: handle 11 flags 0x02 dlen 20
     L2CAP(d): cid 0x0041 len 16 [psm 25]
       AVDTP(s): Capabilities rsp: transaction 1 nsp 0x00
         Media Transport
         Media Codec - SBC
           16kHz 32kHz 44.1kHz 48kHz
           Mono DualChannel Stereo JointStereo
           4 8 12 16 Blocks
           4 8 Subbands
           SNR Loudness
           Bitpool Range 2-53
         Content Protection
           02 00
 > ACL data: handle 11 flags 0x02 dlen 16
     L2CAP(s): Connect rsp: dcid 0x0044 scid 0x0042 result 0 status 0
       Connection successful
< ACL data: handle 11 flags 0x00 dlen 12
     L2CAP(s): Config req: dcid 0x0044 flags 0x00 clen 0
 > ACL data: handle 11 flags 0x02 dlen 16
     L2CAP(s): Config req: dcid 0x0042 flags 0x00 clen 4
       MTU 895
< ACL data: handle 11 flags 0x00 dlen 18
     L2CAP(s): Config rsp: scid 0x0044 flags 0x00 result 0 clen 4
       MTU 895
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
 > ACL data: handle 11 flags 0x02 dlen 14
     L2CAP(s): Config rsp: scid 0x0042 flags 0x00 result 0 clen 0
       Success
< HCI Command: Write Scan Enable (0x03|0x001a) plen 1
     enable 0
 > HCI Event: Command Complete (0x0e) plen 4
     Write Scan Enable (0x03|0x001a) ncmd 1
     status 0x00
< HCI Command: Read Scan Enable (0x03|0x0019) plen 0
 > HCI Event: Command Complete (0x0e) plen 5
     Read Scan Enable (0x03|0x0019) ncmd 1
     status 0x00 enable 0
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 1
< ACL data: handle 11 flags 0x00 dlen 12
     L2CAP(s): Disconn req: dcid 0x0043 scid 0x0041
< ACL data: handle 11 flags 0x00 dlen 12
     L2CAP(s): Disconn req: dcid 0x0044 scid 0x0042
 > HCI Event: Number of Completed Packets (0x13) plen 5
     handle 11 packets 2
 > ACL data: handle 11 flags 0x02 dlen 12
     L2CAP(s): Disconn rsp: dcid 0x0043 scid 0x0041
 > ACL data: handle 11 flags 0x02 dlen 12
     L2CAP(s): Disconn rsp: dcid 0x0044 scid 0x0042
< HCI Command: Write Class of Device (0x03|0x0024) plen 3
     class 0x4a0100
 > HCI Event: Command Complete (0x0e) plen 4
     Write Class of Device (0x03|0x0024) ncmd 1
     status 0x00
< HCI Command: Write Extended Inquiry Response (0x03|0x0052) plen 241
     fec 0x00
     Unknown type 0x45 with 8 bytes data
     Unknown type 0x2d with 2 bytes data
 > HCI Event: Command Complete (0x0e) plen 4
     Write Extended Inquiry Response (0x03|0x0052) ncmd 1
     status 0x00
< HCI Command: Write Class of Device (0x03|0x0024) plen 3
     class 0x4e0100
 > HCI Event: Command Complete (0x0e) plen 4
     Write Class of Device (0x03|0x0024) ncmd 1
     status 0x00
< HCI Command: Setup Synchronous Connection (0x01|0x0028) plen 17
     handle 11 voice setting 0x0060 ptype 0x003f
 > HCI Event: Command Status (0x0f) plen 4
     Setup Synchronous Connection (0x01|0x0028) status 0x00 ncmd 1
 > HCI Event: Synchronous Connect Complete (0x2c) plen 17
     status 0x00 handle 6 bdaddr 00:1A:7D:11:C0:66 type eSCO
     Air mode: CVSD
< ACL data: handle 11 flags 0x00 dlen 18
     L2CAP(d): cid 0x0041 len 14 [psm 3]
       RFCOMM(d): UIH: cr 0 dlci 26 pf 0 ilen 10 fcs 0x3e
< ACL data: handle 11 flags 0x00 dlen 19
     L2CAP(d): cid 0x0041 len 15 [psm 3]
       RFCOMM(d): UIH: cr 0 dlci 26 pf 0 ilen 11 fcs 0x3e
< SCO data: handle 6 flags 0x00 dlen 48
< SCO data: handle 6 flags 0x00 dlen 48
< HCI Command: Write Scan Enable (0x03|0x001a) plen 1
     enable 3
 > HCI Event: Command Complete (0x0e) plen 4
     Write Scan Enable (0x03|0x001a) ncmd 1
     status 0x00
< HCI Command: Read Scan Enable (0x03|0x0019) plen 0
 > HCI Event: Command Complete (0x0e) plen 5
     Read Scan Enable (0x03|0x0019) ncmd 1
     status 0x00 enable 3
 > HCI Event: Mode Change (0x14) plen 6
     status 0x00 handle 11 mode 0x02 interval 160
     Mode: Sniff



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