Historical
ANSI T1.304-1997
Ambient Temperature and Humidity Requirements for Network Equipment in Controlled Environments
This standard provides the ambient air temperatures and relative humidities for operation of all telecommunications equipment deployed in telephone central offices. Ambient temperatures and relative humidities for short-term emergencies are also described. Industrial instrumentation and environmental chamber testing procedures are defined for evaluating the functionality of the equipment at the thermal limits specified.
Alliance For Telecommunications Industry Solutions [atis]