Nortel Networks NB5PLUS4/W ユーザーズマニュアル

between a single sender and multiple receivers on a network. It is used when data 

needs to be sent from one to many devices. Typical uses might include the updat-

ing of mobile personnel from a home office or the periodic publishing of an online 

newsletter. Multicasting provides efficiencies which enable it to use less network 

bandwidth than the sending of the same data by other means [e.g. SMTP].

To access Multicasting, click on Advanced>Multicast.