This International Standard specifies the 34-pole connector and the assignment of contactnumbers at the interface between data terminalequipment (DTE) and data circuit-terminatingequipment (DCE) where ITU-TRecommendation V.36 or RecommendationX.21bis together with Recommendation V.10and V.11 are applicable.NOTE 1 An interoperation between interfacesdesigned according to electrical characteristicsspecified in ITU-T Recommendation V.36 and thosespecified in ITU-T Recommendation V.11 is, at least toa limited degree, possible. This can be achieved, forexample, by using a passive adaptor which joins theinterface connectors in accordance with ISO/IEC 2593and ISO 4902, or ISO 4903, respectively.This International Standard specifies thedimensions of the connector housing and givesrecommendations for the type of locking device(jack-screw system) and connector shielding.