There are two kinds of emulators, i.e., the OpenConfig model under directory emulator-oc-cassini and the TAPI model under directory emulator-tapi-2.1. The former describes the line-side and client-side of the terminal device in Open Line System (OLS), and the latter describes the middle components between optical device in OLS.
How to build and run ODTN Emulators?
How to run and provision ONOS Emulators?
Graphical User Interface for ODTN
Notes about modification in Yang files under emulator-oc-cassini directory