What does UBR stand for?

What does UBR mean?

UBR	Unspecified Bit Rate Computing » Networking
UBR	Unspecified Bit Rate Computing » Telecom
UBR	Unspecified Bit Rate Computing » Security
UBR	Universal Broadband Router Computing » Networking
UBR	UDDI Business Registry Business » General
UBR	Uniform Business Report Business » General
UBR	University of Buffalo Robotics Academic & Science » Universities
UBR	Universal Broadband Routers Miscellaneous » Unclassified
UBR	User Business Requirement Business » General
UBR	Uniform Business Rate (alternative name for NNDR) Medical » British Medicine