Story:

ONAP CCSDK/SDNC/SDN-R can be connected to different network functions (3gpp:managed elements; onf:control-construct) of different technologies. All those network functions expose different technology specific APIs (yang modules) - e.g. 3gpp, ietf, ITU-T, TAPI, onf:microwave, OpenROADM....

To allow µServices and an end-to-end view across technologies an abstracted topology and a "mapping" to technology specific topology models would be useful.

A first idea for an abstracted topology model and an implementation could be:

https://wiki.onap.org/display/DW/ODLUX+NetworkApp+Model