Immediately after the earthquake struck, telephone calls to some parts of Eastern Japan, primarily the affected areas, became difficult, but this was resolved by March 12. The day after the incident, NTT West promptly deployed mobile power-supply vehicles to secure the power supply at communication facilities, and assisted in setting up special public telephones using portable satellite mobile phone and other equipment to secure a means of communication for the affected people. At the same time, NTT West continued to work at on-site surveys and restoration of communication cables, etc. with the aim of restoring customer circuits. To date, approximately 1,000 employees have provided this support.