![C-SGN Emulator](https://d27wgn5g4t3wja.cloudfront.net/img/2e957178-1422-08df-aacd-62aa8b9cf9e0/240637.png)
C-SGN Emulator
The C-SGN Emulator combines the MME, SGW, and PGW functions, simulating the optimized EPC network required for CIoT. As part of the NetTest suite, the C-SGN Emulator creates an end-to-end lab environment for testing functions and features that characterize enhanced Machine Type Communication (eMTC) and Narrow Band Internet of Things (NB-IoT) implementations. In order to reduce complexity in the setup of a test environment, it also supports simulation of SMS Central Function (SMS-SC) and the Service Capability Exposure Functions (SCEF).