User's Manual Part 1

24 APCD-LM043-8.0 (DRAFT C)
3: Detailed Description
3.3 Basic Data Transmission
This section describes how an EUM registers, and once it is registered, how data traffic flows
from the Internet to the end-user PC and from the end-user PC to the Internet. The process in
both directions involves CCU and EUM data tables, which are described in more detail in
Appendix G on page 231. The description of basic data transmission is divided into the
following sections:
• EUM Registration on page 24
• Internet to End-user Computer Data Transmission using Routed Mode on page 26
• End-user Computer to Internet Data Transmission using Routed Mode on page 26
• Internet to End-user Computer Data Transmission using Switched Ethernet Mode or
Through Only Mode on page 27
• End-user Computer to Internet Data Transmission using Switched Ethernet Mode on
page 28
• End-user Computer to Internet Data Transmission using Through Only Mode on page
29
• RADIUS Authorization on page 29
• RADIUS Accounting on page 30
3.3.1 EUM Registration
An EUM must register with the CCU before user traffic can pass between the LMS4000 900
MHz Radio Network and the end-user. The heart of EUM registration is the Authorization
Table, discussed in Authorization Table (CCU only) on page 239. If your LMS4000 system
includes a RADIUS server, it can manage EUM registration by maintaining the Authorization
Table. The CCU restricts the maximum number of EUMs that can be registered at any one
time to 300.
Before installing an EUM, you must configure a grade of service for that EUM, which can be
done one of three ways:
• Add an entry to the Authorization Table (see Authorization Table (CCU only) on page
239).
• Add an entry in a RADIUS database and manage the Authorization Table with a
RADIUS server.
• Use the default grade of service.
EUM Registration Process
The following steps describe the EUM registration process:
1. On power up, the EUM sends a Registration Request message containing its EUMID
to the CCU.
2. The CCU looks for an Authorization Table entry for the EUM to obtain a grade of
service. If there is no entry, it obtains the default grade of service.