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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