hciconfig
# will show you if the device has been spotted.
hciconfig hci0 up
# should show that the device is up.

II. Tool usage:
1. Searching for devices:

a.: P800 - felfedezheto
b.:
hcitool scan
hcitool inq
will search for devices (e.g. the P800) and show the required Bluetooth
Device address (BD addr)

2. Information gathering about a specific device
a.: P800 - Be/felfedezhet
b.:
hcitool info <BD addr>

3. Service Descovery Protocol
a.: P800 - Be/felfedezhet
b.:
sdptool search --bdaddr <BD addr> SERVICE
will show the service parameters
Possible services in P800:
SP - serial port
DUN - dial up network
HSET - voice gateway (headset)
OPUSH - OBEX Object Push

Other services:
LAN - LAN
FAX - FAX
FTRN - ?
NAP - ?
GN - ?
HID - ?
CIP - ?
CTP - ?

c.:
sdptool browse <BD addr>
will show all the stuff

4. Ping
a.: P800 - Be/felfedezhet
b.:
hcitool cc --role=m <BD addr>
l2ping <BD addr>
hcitool dc

5. OBEX Push from PC to ME
a.: P800 - Be/felfedezhet
b.:
export LD_LIBRARY_PATH=/usr/local/lib
obextool push <file> <BD addr> <channel>

channel used to be 1 or 5?

6. OBEX Push from ME to PC
a.: P800 - Be
b.:
opd --mode OBEX [--path <path>] --channel 4 --sdp [--daemonize]
will accept objects sent by the ME to the PC and save them to /tmp (to
path if included)