INTRODUCTION The standards included in Part 1 are for Terminating and Signaling equipment to be used in Telephone Service. Subsequent parts will cover such services as Data Transmission@ Remote Control@ Teletype@ Facsimile@ and so on. Because there are so many accepted practices in the telephone industry@ each devised to meet pertinent requirements in specific situations@ it is difficult to reduce these practices to a single standard for Terminating and Signaling equipment for Telephone Service. Where it appears impractical to establish a numerical value for a Standard@ examples of current practices@ or informative notes on relative importance@ have been given. One of the most important considerations is the achievement of a common acceptance of terms and their definitions. Wherever possible@ terminology already established by recognized organizations have been used. Where no previously accepted terms and definitions were available@ they were prepared by the cognizant EIA Engineering Committee. A list of applicable terms@ their sponsors and reference@ is included in this Standard.