A calling window is the range of local hours during which a telemarketing call may lawfully be placed. In the United States the federal window is generally 8am to 9pm in the called party's own time zone, and some states set a shorter window or limit how many calls may be made each day.
The window is evaluated against the consumer's time zone, not the call center's, the single most common compliance error on offshore floors.
The time zone math from Lahore and Noida
Pakistan is five hours ahead of UTC and India is five and a half hours ahead. During US daylight saving time, 8am on the US East Coast is 5pm in Lahore and 5:30pm in Noida, while 8am on the West Coast is 8pm in Lahore and 8:30pm in Noida. When the US goes back to standard time in November, every one of those shifts by an hour. Hawaii and Alaska sit further behind again.
That is why a night shift in South Asia can be legal for New York and illegal for California at the same moment. The dialer has to decide per lead, not per campaign.
How the window is enforced in the dialer
ViciDial has a local call time setting that uses each lead's time zone, worked out from the area code or postal code, to decide whether a number can be dialed right now. Convoso and other dialers have similar controls. Set the window at the campaign level, then check that state-specific restrictions are applied too. Florida, for example, has its own hours and limits on call frequency.
Common mistakes
Trusting area codes for mobile numbers. People keep their numbers when they move, so a 212 number may be in Los Angeles. Where the postal code is known, use it.
Forgetting the daylight saving switch in March and November.
Treating callbacks as exempt. A callback is still a call. Rules change, so confirm state windows with counsel.