Which type of connector is acceptable between the cable sleeve and the frontal D-ring?

The most appropriate connector between the cable sleeve and the frontal D-ring is the carabiner. Carabiners are designed to securely connect components in various climbing, rigging, and safety applications, providing a reliable coupling that can endure significant loads and resist accidental disengagement. They typically feature a locking mechanism that enhances safety, ensuring that the connection remains intact even under dynamic conditions or during movement.

In telecommunications tower work, where technicians may be exposed to heights and must adhere to strict safety standards, using a carabiner allows for secure attachment while enabling easy and quick connectivity when needed. The specific design of carabiners caters to the needs of workers in such high-risk environments, providing both strength and ease of use.

This makes them a preferred choice over other options. For example, while snap hooks can be used for certain connections, they may not provide the same level of security as a carabiner, especially in high-stress situations. Quick links are usually not as easily removable or re-attachable without tools, which can be impractical in the field. Similarly, a swivel joint, although useful in specific applications where rotation is required, does not serve the same purpose of securely connecting two components for safety practices in climbing or rigging scenarios.