FIELD: communications engineering. SUBSTANCE: device for interfacing office telephone exchange with ATM network has channel switching part for organizing ATM communication channel and connecting ATM network and subscriber requesting access to ATM network, as well as ATM network switching part for converting signal information and ATM communication channel into respective ATM network location used in ATM network. EFFECT: enhanced reliability of interfacing office telephone exchange with network operating in asynchronous transmission mode. 9 cl, 4 dwg
