Verizon Communications Inc.
Next generation to VoLTE fallback for voice calls

Abstract:

A network device receives, from a user equipment (UE), a Fifth Generation (5G) New Radio (NR) network attach request, wherein the 5G NR network attach request includes a Voice over Long Term Evolution (VoLTE) network attach request. The network device initiates attachment procedures, in response to receipt of the 5G NR network attach request and the VoLTE network attach request, to attach the UE to the 5G NR network and to a VoLTE network, and initiates establishment of a connection between the 5G NR network and the UE.