"There was a technical snag which grounded the switch board unit of BSNL at around 1130 hours today badly affecting the service," a senior BSNL officer said.
"It had totally collapsed. We had to reload the software and operating system and it took some hours," he said adding that the service was made operational by 2030 hours.
In Srinagar, BSNL has a challenging task of diverting the load as two main switch boards were still under flood water, he said.