Definitions for "HDB3"
A bipolar coding method that does not allow more than 3 consecutive zeroes.
High Density Bipolar Three A line interface standard for E1 which is similar to B8ZS, which eliminates data streams with 8 or more consecutive zeros. Allows for 64Kbps clear channel capacity and still assures a minimum ones density required by E1 lines.
High Density, Bipolar 3 (ISDN)