Which punchdown block is more often used with POTS telephone connections?

The punchdown block that is more often used with POTS (Plain Old Telephone Service) telephone connections is the 66 block. This type of block is designed for connecting and terminating copper telephone wires, making it ideal for traditional telephone services.

66 blocks are typically used in telephone systems and can accommodate low-frequency voice signals. They provide a space-efficient method for organizing and managing multiple telephone lines in central offices or telecommunications closets. The design of the 66 block allows for easy termination of wires, which helps in maintaining structured cabling environments.

In contrast, while the 110 block is more commonly utilized for structured cabling and data networking applications, particularly for Ethernet connections, it is not specifically geared towards POTS applications. Category 6 blocks focus on higher-speed data transmission, and fiber optic blocks are designed for terminating fiber optic cables, which are irrelevant in the context of POTS. Thus, the 66 block stands out as the appropriate choice for POTS telephone connections.