Mobile station function testing apparatus

摘要

The appts. uses a system simulator connected to the mobile station via an interface. An external interface box is coupled via a standard-serial interface to the mobile station. The interface box is connected to an interface within the mobile station, between the signal processor and transducer. During audio tests, data are transferred from the interface box to the transducer and vice versa by means of a software routine in the signal processor of the mobile appts. Audio function testing of the signal processor may be performed by pre- and post-processing the transducer data before transferring to the interface box. The interface box is pref. connected to a free serial interface of the signal processor. For voice coder tests, data are exchanged exclusively between the signal processor and the interface box.