A vertical service code (VSC) is a special code dialed prior to (or instead of) a telephone number that engages some type of special telephone service or feature. Typically preceded with an asterisk, or * (star), key on the touch tone keypad and colloquially referred to as star codes, most are two digits in length; as more services are developed, those that use 2 or 3 as the first digit are sometimes three digits in length. (from Wikipedia)
Verizon Calling Features Activation and Deactivation Codes
Feature | Activate | Deactivate |
*69 | ||
Anonymous Call Rejection | ||
Busy Redial | ||
Call Block* | ||
Call Forwarding | ||
Call Trace | ||
Call Waiting/Cancel Call Waiting | Hookswitch | |
Per Line Blocking | ||
Per Call Blocking | Hang Up | |
Speed Dialing 8 | ||
Speed Dialing 30 | ||
Three-Way Calling | Hookswitch |
* In some areas, press 3 to activate Call Block.
Rotary Instructions for Star Codes
Instructions for FiOS Digital Voice Calling Features