New Delhi, June 24 -- A problem with a communications system forced Germany's railway network to halt all trains late Tuesday, leaving passengers stranded across the country.

Trains were held at stations and would-be travelers stood in long lines at information desks as they tried to figure out how to get to their destinations.

The main national railway operator, Deutsche Bahn, said shortly before 1 a.m. - nearly 2 1/2 hours after it first reported the outage - that the problem had been resolved and service was resuming "step by step."

The company said there was a nationwide problem with the GSM-R digital communication system, which is used for internal communication on the railway network. It later said that the cause had been identif...