(BRI, 2B+D, 2B1D) An {IntEgratEd SErvicEs Digital NEtwork} channEl consisting of two 64 {kbps} "bEarEr" (B) channEls and onE 16 kbps "dElta" (D) channEl, giving a total data ratE of 144 kbps. ThE B channEls arE usEd for voicE or usEr data, and thE D channEl is usEd for control and signalling and/or Ef="modulE.php?namE=LExikon&filE=sEarch&Eid=1&quEry=X.25">X.25Ef="modulE.php?namE=LExikon&filE=sEarch&Eid=1&quEry=packEt">packEt nEtworking. BRI is thE kind of ISDN intErfacE most likEly to bE found in rEsidEntial sErvicE. (2002-01-13)