--- a/bluetooth.rst	Sun Apr 12 22:26:28 2009 +0300
+++ b/bluetooth.rst	Sun Apr 12 22:28:55 2009 +0300
@@ -3,11 +3,96 @@
 * Debian.
 
   $ sudo apt-get install bluetooth
+  $ sudo apt-get install bluez-utils
 
 * BlueZ.
 
 BlueZ is official Linux Bluetooth protocol stack.
 
+** How find local bluetooth device?
+
+  $ hcitool dev
+Devices:
+    hci0    00:03:C9:05:65:98
+    hci1    00:1F:81:00:02:5A
+
+or
+
+  $ sudo hciconfig -a
+hci0:   Type: USB
+    BD Address: 00:03:C9:05:65:98 ACL MTU: 1017:8 SCO MTU: 64:0
+    UP RUNNING PSCAN
+    RX bytes:2517 acl:12 sco:0 events:64 errors:0
+    TX bytes:756 acl:12 sco:0 commands:33 errors:0
+    Features: 0xff 0xff 0x8d 0xfe 0x9b 0xfd 0x00 0x80
+    Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
+    Link policy: RSWITCH HOLD SNIFF PARK
+    Link mode: SLAVE ACCEPT
+    Name: 'desktop-0'
+    Class: 0x3e0100
+    Service Classes: Networking, Rendering, Capturing, Object Transfer, Audio
+    Device Class: Computer, Uncategorized
+    HCI Ver: 2.0 (0x3) HCI Rev: 0x2000 LMP Ver: 2.0 (0x3) LMP Subver: 0x415c
+    Manufacturer: Broadcom Corporation (15)
+
+hci1:   Type: USB
+    BD Address: 00:1F:81:00:02:5A ACL MTU: 339:6 SCO MTU: 180:1
+    UP RUNNING PSCAN
+    RX bytes:398 acl:0 sco:0 events:18 errors:0
+    TX bytes:317 acl:0 sco:0 commands:17 errors:0
+    Features: 0xef 0x3e 0x09 0xf0 0x0b 0x08 0x00 0x00
+    Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
+    Link policy: RSWITCH HOLD SNIFF PARK
+    Link mode: SLAVE ACCEPT
+    Name: 'desktop-1'
+    Class: 0x3e0100
+    Service Classes: Networking, Rendering, Capturing, Object Transfer, Audio
+    Device Class: Computer, Uncategorized
+    HCI Ver: 1.2 (0x2) HCI Rev: 0x2 LMP Ver: 1.2 (0x2) LMP Subver: 0x2
+    Manufacturer: not assigned (74)
+
+** How find remote bluetooth device?
+
+  $ hcitool scan
+Scanning ...
+        00:22:66:D1:B7:20       Nokia 5320
+
+** What version of Bluetooth support local device?
+
+  $ sudo hciconfig -a
+hci0:   Type: USB
+...
+    HCI Ver: 2.0 (0x3) HCI Rev: 0x2000 LMP Ver: 2.0 (0x3) LMP Subver: 0x415c
+...
+hci1:   Type: USB
+...
+    HCI Ver: 1.2 (0x2) HCI Rev: 0x2 LMP Ver: 1.2 (0x2) LMP Subver: 0x2
+...
+
+** What support remote device?
+
+  $ sudo sdptool browse  00:22:66:D1:B7:20
+
+Browsing 00:22:66:D1:B7:20 ...
+Service Name: AVRCP Target
+Service Description: Audio Video Remote Control
+Service Provider: Symbian Software Ltd.
+Service RecHandle: 0x10000
+Service Class ID List:
+  "AV Remote Target" (0x110c)
+Protocol Descriptor List:
+  "L2CAP" (0x0100)
+    PSM: 23
+  "AVCTP" (0x0017)
+    uint16: 0x100
+Profile Descriptor List:
+  "AV Remote" (0x110e)
+    Version: 0x0100
+...
+
+00:1b:52:a8:f6:96
+
+
 See
 
   http://www.bluez.org/