In telecommunication, an address message is a message sent in the forward direction that contains (a) addressinformation, (b) the signaling information required to route and connect a call to the called line, (c) service-class information, (d) information relating to user and network facilities, and (e) call-originator identity or call-receiver identity.
... the major German railway company
DB is the abbreviation of Dominion Breweries[?], a major beer brewing company of New Zealand.
This is a disambiguation page; that ...