Wednesday evening July 4, there will be maintenance on central RU network equipment. From 22:00 hours, central RU applications and network will not be available most of the time. For telephones no disturbance is expected. For the C&CZ services there is a possibility of disruptions: no Internet connection for some time. Please think which processes depend on connectivity to RU central services and prepare for this possible outage if necessary. Future maintenance windows can be seen on the ISC website.