Following the attack, calls to Verizon's networks reached twice the normal daily volumes of 115 million calls in New York City and 35 millions calls in the nation's capital, said the company. On a normal business day Verizon handles 1.5 billion calls, it said. … Read more Cingular: Nationwide call volume up 20% nationally Cingular said its network continues to operate normally, with approximately a 20-percent increase in attempted calls nationwide. There are no blockages or network outages. Cingular is working to increase network capacity in the Washington, D.C., areas by deploying additional Cells on Wheels (COWs). Cingular said it is deploying six COWS in Washington. Four are already in place. Cingular Interactive lost telephony to eight cell sites in lower Manhattan as a result of a power outage that occurred about Tuesday evening. …