To ensure a continuing supply of telephone numbers in the San Jose geographic region of northern California, the 669 area code will be added to the area currently served by 408. According to the California Public Utilities Commission, this is known as an area code overlay, and does not require customers to change their existing area code.
Beginning April 21, a new dialing procedure will require callers to dial 1 + area code + telephone number. Alarm and security services and equipment currently located in the 408 area code and programmed to dial only seven digits must be updated or reprogrammed to dial 1+ area code + telephone number for all calls in the 408/669 area code.
Between April 21 and the final implementation date of Oct. 20, customers should begin using the new dialing procedure when placing calls from the 408 area code. If customers forget and use the old dialing procedure of dialing just seven digits, calls will still be completed. However, starting on Oct. 20, customers must use the new dialing procedure for all calls. After this date, if customers do not use the new dialing procedure, calls will not be completed, and a recording will instruct them to hang up and dial again.
Reprogramming of alarm equipment should take place between April 21 and Oct. 20. This period allows either the old or new
dialing procedure to be used to complete calls. All alarm service
providers must make their programming changes during this period.
The price of a call, coverage area, or other rates and services will not change due to the overlay, and what is a local call now will remain a local call regardless of the number of digits dialed. Customers can still dial just three digits to reach 911, as well as 211, 311, 411, 511, 611, 711 and 811.
Questions about the dialing procedure change should be directed to local service providers in northern California.