OpenEPC 7 has brought the LTE core into production level.
The LTE core includes: MME, SPGW and HSS
The OpenEPC 7 MME has passed more than 450 test-cases provided by a Tier 1 operator and with their own testing tool.
The OpenEPC 7 SPGW has passed more than 400 test-cases provided by a Tier 1 operator with their own testing tool and a performance test done in standard COTS blades which demonstrated readiness to support over 2 Million subscribers (the test was using DPDK for packet forwarding optimizations).
The OpenEPC 7 HSS has passed a VoLTE PoC with a Tier 1 operator.
Look in the specific page of each of the functions to understand more about its features.