With 5 G commercial application

5 G voice service solutions have attracted much attention

the initial solution is EPS FB

which is 5 G falling back to 4 G

and the final solution is Vo NR

a 5 G NR voice solution. Limited by 5 G network coverage and equipment capacity

the main solution is initial solution. In view of 5 G voice fall back scheme

this paper analyzes abnormal problems based on the existing network test and business experience

formulates basic optimization process

summarizes typical problems classifi cation and solutions

and supports 5 G voice perception improvement.