prs configuration. This can all be done directly through an OMC-R Win- dow. PCUSN configuration can be done from a UNIX background menu on the workstation screen. The interface is shown in Figure 4-17. Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website. Function of GPRS Elements Chapter 4 Figure 4-16 3rd Party OSS Domain Management. OMC-R OMC-S OMC-D SS7 SIG Network Agprs PCUSN GPRS Gn Figure 4-17 PCUSN OAM BSS OA&M Workstation OAM Management. Server OMC-R PCUSN PCUSN Alarms+Counters Configuration Ethernet Ethernet/X.25 Agprs configuration PCUSN OMC-D Architecture OMC-D device support provides for fault management, configuration man- agement, performance management, and security management for the fol- lowing devices as shown in Figure 4-18: Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website. Function of GPRS Elements Function of GPRS Elements Figure 4-18 The GGSN. Desktop SUN E3500 Interface OMC-D GPRS Core Network DNS/DHCP Radius ATM Switch CES 4500 SUN U10 SUN U10 HP 9000 Policy Servers (PSs) (such as DNS/DHCP) RADIUS The OMC-D Core Management Client hosts many of the software releases for the management systems. OMC-D Core Management Servers typically use Sun servers and are usually deployed in mated pairs (a primary-server operation is normal; a secondary-server operation is a warm backup). A Management Data Provider (MDP) server collects raw performance data from the SGSN and other network devices to provide statistical per- formance records (by the external OSSs). A Service Management Reporter (SMR) hosts the network performance information databases and provides an SQL interface to reporting tolls residing on the SMR client (PC). Having looked at the various nodes and i