Inventor

YI JUNSONG

CN2 patents

Patents

2 patents

US7796743B2Sep 14, 2010

Method and system for implementing ring back tone

HUAWEI TECH CO LTD6 citations60

US7627107B2Dec 1, 2009

Method and system for invoking the service in the intelligent network

HUAWEI TECH CO LTD0 citations46