What is a common feature of effective communication devices in correctional facilities?

Effective communication devices in correctional facilities are crucial for maintaining safety and order. The reason why instant communication among staff is significant lies in the dynamic and often unpredictable nature of correctional environments. Such devices enable rapid coordination and response to incidents, whether they are emergencies, routine operations, or security matters. This capability helps ensure that staff can quickly share vital information, respond to threats, or manage situations involving inmates, thus contributing to overall safety and operational efficiency.

In contrast, while communication might occur only during emergencies in some contexts, limiting usage in that way undermines the overall safety management required in a correctional facility. Providing communication devices to inmates primarily for personal calls would not align with the objectives of security and safety within these institutions. Lastly, if these devices were designed mainly for entertainment, they would not fulfill the critical need for effective communication among officers and staff, which is a core component of ensuring safety and order in correctional settings.