TIA TSB-87-2012

Abstract

<strong>Introduction</strong> <br>This Part specifies the Cellular Digital Packet Data (CDPD) Mobile Data Intermediate System (MD-IS) . <br>The CDPD Network provides data communications services to subscribers over a wide geographic area. The distinctive nature of the CDPD Network lies primarily in the ability to provide this data connectivity to mobile users. The Mobile End System (M-ES) may therefore change its subnetwork point of attachment at will. The CDPD Network thus provides the service of managing the mobile data connectivity of its subscribers. <br>The MD-IS has the primary responsibility for providing this mobile data connectivity management. Within the MD-IS, the Mobility Management function is defined as follows: <br>a. Mobile Home Function (MHF) <br>b. Mobile Serving Function (MSF). <br>The MD-IS participates in the provision of the CDPD Network support services. The support services involving the MD-IS include: <br>a. Network Management Services <br>b. Accounting Services <br>c. Multicast Service <br>d. Broadcast Service <br>e. Subscriber Authentication and Authorization Service <br>f. Subscriber Location Service <br>g. Airlink Encryption Service <br>h. Compression Service. <br>The following sections describe the MD-IS role within each of the functions and services. Section 11 subsequently details the functional and communications protocol profiles for the MD-IS.