Service Name: Hands-Free Audio Gateway
Channel: 1

Service Name: Headset Audio Gateway
Channel: 2

Service Name: Dial-Up Networking
Channel: 3

Service Name: OBEX Object Push
Channel: 9

Service Name: OBEX File Transfer
Channel: 10

Service Name: SyncMLClient
Channel: 11

Service Name: Nokia OBEX PC Suite Services
Channel: 12

Service Name: Imaging
Channel: 15

Output of my rfcomm.conf:
harsh@qwerty-workstation:~$ cat /etc/bluetooth/rfcomm.conf
#
# RFCOMM configuration file.
#

#rfcomm0 {
#       # Automatically bind the device at startup
#       bind no;
#
#       # Bluetooth address of the device
#       device 11:22:33:44:55:66;
#
#       # RFCOMM channel for the connection
#       channel 1;
#
#       # Description of the connection
#       comment "Example Bluetooth device";
#}

rfcomm0 {
        bind yes;
        device 00:12:62:FD:53:53;
        channel 12;
        comment "Nokia OBEX PC Suite Services";
        }

rfcomm1 {
        bind yes;
        device 00:12:62:FD:53:53;
        channel 10;
        comment "OBEX file transfer";
        }

rfcomm2 {
        bind yes;
        device 00:12:62:FD:53:53;
        channel 9;
        comment "OBEX file push";
        }

rfcomm3 {
        bind yes;
        device 00:12:62:FD:53:53;
        channel 1;
        comment "Dial-up networking";
        }

rfcomm4 {
        bind yes;
        device 00:12:62:FD:53:53;
        channel 11;
        comment "SyncML Client Service";
        }