The invention discloses a test device for integration testing service at E1, T1 interfaces. The device includes interface configuration database, error code database of telephone channel, calling service database, load control module, protocol emulation module, protocol monitoring module, speech recognition and telephone channel check module, error code testing module, message encoding module, message decoding module, and interface module. Through cooperation and interaction among above said modules realize following functions and parallel processing: unity of monitor and emulation, interface configuration, protocol stack, different kinds of types speech path test, signaling flow and calling service, DTMF dispatching number, identification of cue tone, and error code testing etc. The invention makes possible to enter performance testing, conformance testing and synthesis aptitude test from single functional test executed at currently.