7 Electrical Man Machine Interface (EMMI)

34.1093GPPRelease 17Special conformance testing functionsTerminal logical test interfaceTS

The EMMI is used for automation of conformance testing. The commands used on the EMMI by the System Simulator, shall be limited to the AT commands specified in TS 27.005 [15], TS 27.007 [16] and TS 27.060 [17]. The EMMI and its use for automation of signalling testing are illustrated in figure 7.1 as an example.

At the System Simulator side, a logical EMMI using AT commands shall interface with the TTCN test cases. A physical EMMI interface may be a standard RS232 interface towards the UE. Other interfaces shall not be precluded.

At the UE side the physical interface may be of various types, and an adapter may be provided by the UE manufacturer for converting the AT commands between the System Simulator interface into the UE manufacturer specific interface and format.

The use of EMMI is optional for the UE.

Figure 7.1: An example of EMMI and its use for automation of signalling testing