GSM basic station Glossary Fraidoon Mazda MPhil DFH DMS MBIM CEng FIEE Northern Telecom Contents 62.1 Introduction 62/3 62.2 Acronyms 62/3 62.3 Glossary of terms 62/18 This page intentionally left blank Introduction 62/3 62.1 Introduction Automatic Intercept System. (System which is pro- grammed to automatically provide information to a Acronyms and glossary of terms are given in the sections below. telephone caller, who has been intercepted and Generally the terms are not repeated in the two sections, unless they routed to it.) are equally well known by their acronym and their full description. Arithmetic Logic Unit. Where the letters within an acronym can have slightly different Advanced Mobile Phone System. (Or American interpretations, these are given within the same entry. If the acronym Mobile Phone Standard. Analogue cellular radio stands for completely different terms then these are listed separately. standard.) Amplitude Modulation. (Analogue signal trans- mission encoding technique.) Automatic Message Accounting. (Ability within an 62.2 Acronyms office to automatically record call information for accounting purposes. See also CAMA.) All Area Networking. (Networking covering local Alternate Mark Inversion. (Line code system.) ANBFM and wide areas. Also used to imply combined use of Adaptive Narrow Band Frequency Modulation. American National Bureau of Standards. LAN and WAN.) Asynchronous Balanced Mode. Architecture Neutral Distribution Format. (Scheme ABSBH Average Busy Season Busy Hour. (Denotes the three from OSF to enable software to be produced in months in the year having the highest average traffic single code to run on any hardware.) during the busy hour. Special days, such as American National Standards Institute. Christmas, are excluded from the calculations.) Automatic Number Identification. (Feature for auto- Acknowledgement. (Control code sent from a re- matically determining the identity of the caller.) ceiver to a transmitter to acknowledge the receipt of Alternate Operator Services. (Comp