The ICC 66 Wiring Block with Telco provides a clear demarcation point between the Telephone Company and customer-owned equipment. The ICC 66 Wiring Block is designed for the quick installation of cables, telephone systems, PBX systems, and other low voltage Telecom equipment. Each Block is pre-terminated and factory tested saving precious installation time and labor hours. Designed for wall installations, the block is pre-mounted on an 89D bracket. The block Includes a hinged cover to protect the terminations from dust and dirt. The block is available in a 25 pair/1-Telco version or a 50 pair/2-Telco version (Available with female connectors only). Includes Cover & 89D bracket.