Recent Case Study of Fault in IP Phone User System
NTT technical review · 2016
This article describes a problem a customer was having with disconnects in inter-office calling using IP-VPN (Internet protocol virtual private network) services and how we rectified it.This is the thirtysixth article in a series on telecommunication technologies.This month's contribution is from the Network Interface Engineering Group, Technical Assistance and Support Center, Maintenance and Service Operations Department, Network Business Headquarters, NTT EAST.