[Bluez-devel] rfcomm error message?

hi!!! :)

i tried using the rfcomm program to test for connections between cellphone and linux pc...

anton@maverick home]rfcomm -i hci0 listen 2
Waiting for connection on channel 1

..when i try to connect the smartphone the program returns and outputs the error message:

"can't create RFCOMM TTY: Operation not supported"

whats wrong with this? do i have to set some configuration files?