A breakdown in an international undersea cable network disrupted Internet links to Egypt, India and Gulf Arab countries on Wednesday, and Egypt said it could take several days for its services to return to normal.
It was not immediately possible to gauge the impact of the disruption on financial institutions. Egypt's telecoms ministry said 70 percent of the country's Internet network was down and India initially said it had lost over half its bandwidth.
"This cut has affected Internet services in Egypt with a partial disruption of 70 percent of the network nationwide," the Egyptian ministry said in a statement.
In Cairo, much of the capital city was without access to the Internet for the bulk of the day, frustrating businesses and the professions.
"I can't do anything because I manage all my work by e-mail. It is very frustrating," said Egyptian lawyer Rebecca Mikhail. "As soon as I came in (to work) at 10 a.m. I didn't have access to the Internet ... If it goes into the next working week it is going to be a nightmare."
Residents of Gulf Arab countries also reported a slowdown in Internet connectivity. The Bahrain Telecommunications Co said its services were affected after two undersea cables were cut near Alexandria, on Egypt's north coast.
The Egyptian telecoms ministry said it did not know how the cables were cut or if weather was a factor. Storms had forced Egypt to close the northern mouth of the Suez canal on Tuesday.
Egypt said its call centers saw their services cut by more than 30 percent, and two Egyptian stockbrokers said market transactions were considerably slower and some international trading orders could not go through.
"It (the disruption) had a very negative impact on the stock market today," one Cairo-based trader said, speaking on condition of anonymity because of the sensitivity of the issue. "At times, we were trading blind."
Stock market officials were not available for comment.
Asked about the impact of the disruption on the banking system, Egypt's Deputy Central Bank Governor Tarek Amer said: "We are disappointed (with) the service and will consider alternatives for the banking system if this happens again."
AT&T Inc. said that a cable owned by a consortium of which it is part was affected. "We do know that one cable is disrupted," AT&T spokesman Michael Coe said, adding that the cable in question goes between France and Egypt.
"We are impacted on certain routes to the Middle East. The traffic is being rerouted," Coe said. "Multiple carriers are rerouting so we do expect some congestion."
India also reported serious disruptions to its services. Rajesh Chharia, president of the Internet Service Providers' Association of India, told Reuters: "There has been a 50 to 60 percent cut in bandwidth."
Chharia told the Headlines Today news channel that a "degraded" service would be up and running by Wednesday night, but full restoration would take 10 to 15 days.
"The big operators have transferred their small broadband connectivity through the Pacific route, and that's the reason there's no hue and cry in the country," he said.
One Indian Internet service provider affected by the cut, Videsh Sanchar Nigam Ltd (VSNL), said its service had been "largely restored" by diverting to another cable. Two outsourcing firms in Bangalore reported minimal disruption.
"There has been a small outage in the evening today. But it has been restored now," said a spokesman for Satyam Computer, India's fourth-biggest outsourcing firm.