ITU-T F.812

This Recommendation specifies the broadband connectionless data bearer service. This is a public packet-switched service that provides for the transfer of variable-length data units at high speed without the need for call establishment procedures between users. These data units can be transferred from a single source to a single destination, or from a single source to multiple destinations. Each data unit includes a source address validated by the network. One generic feature of a B-ISDN connectionless bearer service is that it may include broadcasting capabilities. The service uses addresses based on the E.164 ISDN numbering plan.