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From: George Norton <g.norton@ex.ac.uk>
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Subject: [Bluez-users] Re: Re: Plantronics M2500 recording problem
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Date: Wed, 01 Jun 2005 23:18:17 +0100

Thanks for the quick reply:

george@G0on:~$ hciconfig -a
hci0:   Type: USB
        BD Address: 00:E0:98:D1:B0:5F ACL MTU: 192:8  SCO MTU: 64:8
        UP RUNNING PSCAN ISCAN
        RX bytes:101956 acl:25 sco:1980 events:62 errors:0
        TX bytes:72654 acl:23 sco:1403 commands:29 errors:0
        Features: 0xff 0xff 0x0f 0x00 0x00 0x00 0x00 0x00
        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
        Link policy: RSWITCH HOLD SNIFF PARK
        Link mode: SLAVE ACCEPT
        Name: 'G0on-0'
        Class: 0x000100
        Service Classes: Unspecified
        Device Class: Computer, Uncategorized
        HCI Ver: 1.1 (0x1) HCI Rev: 0x20d LMP Ver: 1.1 (0x1) LMP Subver: 0x20d
        Manufacturer: Cambridge Silicon Radio (10)

george@G0on:~$ hciconfig hci0 revision
hci0:   Type: USB
        BD Address: 00:E0:98:D1:B0:5F ACL MTU: 192:8  SCO MTU: 64:8
        HCI 16.4
        Chip version: BlueCore02
        Max key size: 56 bit
        SCO mapping:  HCI

george@G0on:~$ hcitool info 00:03:89:B6:0D:F8
Requesting information ...
        BD Address:  00:03:89:B6:0D:F8
        Device Name: M2500 by Plantronics
        LMP Version: 1.2 (0x2) LMP Subversion: 0x615
        Manufacturer: Cambridge Silicon Radio (10)
        Features: 0xbc 0xe8 0x01 0x00 0x08 0x08 0x00 0x00
                <encryption> <slot offset> <timing accuracy> <role switch>
                <sniff mode> <SCO link> <HV3 packets> <u-law log> <A-law log>
                <CVSD> <AFH cap. slave> <AFH cap. master>


// While recording in audacity, first recording is normal:
george@G0on:~$ hcidump -X
HCIDump - HCI packet analyzer ver 1.12
device: hci0 snap_len: 1028 filter: 0xffffffff
> HCI Event: Command Status (0x0f) plen 4
  0000: 00 01 07 04                                       ....
> HCI Event: Connect Complete (0x03) plen 11
  0000: 00 2c 00 f8 0d b6 89 03  00 00 01                 .,.........
> HCI Event: Command Status (0x0f) plen 4
  0000: 00 01 06 04                                       ....
> HCI Event: Disconn Complete (0x05) plen 4
  0000: 00 2c 00 16                                       .,..
> HCI Event: Command Status (0x0f) plen 4
  0000: 00 01 07 04                                       ....
> HCI Event: Connect Complete (0x03) plen 11
  0000: 00 30 00 f8 0d b6 89 03  00 00 01                 .0.........
> HCI Event: Command Status (0x0f) plen 4
  0000: 00 01 06 04                                       ....
> HCI Event: Disconn Complete (0x05) plen 4
  0000: 00 30 00 16                                       .0..

// A second recording which is corrupted:

> HCI Event: Command Status (0x0f) plen 4
  0000: 00 01 07 04                                       ....
> HCI Event: Connect Complete (0x03) plen 11
  0000: 00 2c 00 f8 0d b6 89 03  00 00 01                 .,.........
> HCI Event: Command Status (0x0f) plen 4
  0000: 00 01 06 04                                       ....
> HCI Event: Disconn Complete (0x05) plen 4
  0000: 00 2c 00 16                                       .,..

// I attempted to record and got a corrupted recording:
george@G0on:~$ btsco -v 00:03:89:B6:0D:F8
btsco v0.4c
Device is 1:0
Voice setting: 0x0060
RFCOMM channel 1 connected
speaker volume: 7 mic volume: 15
i/o needed: connecting sco...
connected SCO channel
Done setting sco fd
recieved AT+VGS=07
Sending up speaker change 7
speaker volume: 7 mic volume: 15
driver is not in use
disconnected SCO channel

Kernel Version: 2.6.11.11
Distribution: Ubuntu 5.04 (Hoary)

-George



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