moOde BT dump - Android vs Echo

(Bluetooth spec abbreviations:
 AVDTP = audio/video distribution transport protocol
 INT = initiator; e.g., the remote device
 ACP = acceptor; here, the moOde Bluetooth stack
 SEID = stream endpoint identifier
 SBC = subband codec
)

(RTP abbreviations:
 ver = version
 cc = contributing source count (?)
 pt = payload type
 seqn = sequence number
 ssrc = synchronization source identifier
)

(hcidump nomenclature:
 ">" denotes packets coming into local device (e.g., moOde)
 "<" denotes packets going out of local device
 cmd = command
 rsp = response
)

======================
Connect from Android 7
======================

pi@moode43c:~ $ sudo hcidump avdtp
HCI sniffer - Bluetooth packet analyzer ver 5.43
device: hci0 snap_len: 1500 filter: 0x400
> AVDTP(s): Discover cmd: transaction 0 nsp 0x00
< AVDTP(s): Discover rsp: transaction 0 nsp 0x00
    ACP SEID 1 - Audio Source
    ACP SEID 2 - Audio Sink
    ACP SEID 3 - Audio Sink
> AVDTP(s): All Capabilities cmd: transaction 1 nsp 0x00
    ACP SEID 2
< AVDTP(s): All 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 2-64
    Delay Reporting
> AVDTP(s): All Capabilities cmd: transaction 2 nsp 0x00
    ACP SEID 3
< AVDTP(s): All Capabilities rsp: transaction 2 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 2-64
    Delay Reporting
> AVDTP(s): Set config cmd: transaction 3 nsp 0x00
    ACP SEID 2 - INT SEID 1
    Media Transport
    Media Codec - SBC
      44.1kHz
      JointStereo
      16 Blocks
      8 Subbands
      Loudness
      Bitpool Range 2-53
< AVDTP(s): Set config rsp: transaction 3 nsp 0x00
> AVDTP(s): Open cmd: transaction 4 nsp 0x00
    ACP SEID 2
< AVDTP(s): Open rsp: transaction 4 nsp 0x00
> AVDTP(s): Start cmd: transaction 5 nsp 0x00
    ACP SEID 2
< AVDTP(s): Start rsp: transaction 5 nsp 0x00
> AVDTP(m): ver 2 cc 0 pt 96 seqn 1 time 0 ssrc 0
^C

========================
Connect from Amazon Echo
========================

HCI sniffer - Bluetooth packet analyzer ver 5.43
device: hci0 snap_len: 1500 filter: 0x400
> AVDTP(s): Discover cmd: transaction 10 nsp 0x00
< AVDTP(s): Discover rsp: transaction 10 nsp 0x00
    ACP SEID 1 - Audio Source
    ACP SEID 2 - Audio Sink
    ACP SEID 3 - Audio Sink
> AVDTP(s): Capabilities cmd: transaction 11 nsp 0x00
    ACP SEID 1
< AVDTP(s): Capabilities rsp: transaction 11 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 2-64
> AVDTP(s): Capabilities cmd: transaction 12 nsp 0x00
    ACP SEID 2
< AVDTP(s): Capabilities rsp: transaction 12 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 2-64
> AVDTP(s): Capabilities cmd: transaction 13 nsp 0x00
    ACP SEID 3
< AVDTP(s): Capabilities rsp: transaction 13 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 2-64
> AVDTP(s): Set config cmd: transaction 14 nsp 0x00
    ACP SEID 2 - INT SEID 1
    Media Transport
    Media Codec - SBC
      48kHz
      JointStereo
      16 Blocks
      8 Subbands
      Loudness
      Bitpool Range 2-51
< AVDTP(s): Set config rsp: transaction 14 nsp 0x00
> AVDTP(s): Open cmd: transaction 15 nsp 0x00
    ACP SEID 2
< AVDTP(s): Open rsp: transaction 15 nsp 0x00
> AVDTP(s): Start cmd: transaction 0 nsp 0x00
    ACP SEID 2
< AVDTP(s): Start rsp: transaction 0 nsp 0x00
> AVDTP(m): ver 2 cc 0 pt 1 seqn 0 time 0 ssrc 1
^C