CLLI™ Code

A CLLI™ Location Identification Code is an eleven-character alphanumeric descriptor used to identify switches, points of interconnection, and other categories of telephony network elements and their locations. Companies that are licensees of Telcordia COMMON LANGUAGE® Products can refer questions to their company’s COMMON LANGUAGE Coordinator. (COMMON LANGUAGE is a registered trademark and CLLI is a trademark of Telcordia Technologies, Inc.)