Socket Mobile Cordless Serial Adapter - Manual (Page 41)

devices to interoperate in serial communications, both
devices must have this profile
service class The type of service that a Bluetooth enabled device can
provide to other Bluetooth enabled devices
stop bit In serial communications, where each bit of the message
is transmitted in sequence, stop bits are extra "1" bits
which follow the data and any parity bit. They mark the
end of a unit of transmission (normally a byte or
character)
APPENDIX C: GLOSSARY 41