Public Switched Telephone Network (PSTN) - Subscriber Line Protocol Over the Local Loop for Display (and Related) Services - Part 2: Off-Hook Data Transmission
Definition of the protocol for off hook data transmission on analogue lines required to support display services such as Calling Line Identification Presentation for the PSTN.
Environmental Conditions and Environmental Tests for Telecommunications Equipment - Part 2-5: Specification of Environmental Tests - Ground Vehicle Installations
Equipment Engineering - Environmental Conditions and Environmental Tests for Telecommunications Equipment - Part 2-4: Specification of Environmental Tests; Stationary use at Non-Weatherprotected Locations