GLOSSARY100V.32An ITU-T standard for modemcommunications at 9600 bps and 4800 bps.V.32 modems fall back to 4800 bps when linequality is impaired.V.32 bisAn ITU-T standard that extends the V.32connection range: 4800, 7200, 9600, 12,000,and 14,400 bps. V.32 bis modems fall back tothe next lower speed when line quality isimpaired, fall back further as necessary, andalso fall forward (switch back up) when lineconditions improve (see online fall back/fallforward).V.34An ITU-T standard that currently allows datarates as high as 28,800 bps.V.34+An enhancement to V.34 that enables datatransfer rates as high as 33,600 bps.V.42An ITU-T standard for modemcommunications that defines a two-stageprocess of detection and negotiation forLAPM error control.V.42 bisAn extension of ITU-T V.42 that defines aspecific data compression scheme for useduring V.42 connections.
