April 2011
Intermediate to advanced
368 pages
11h 36m
English
Content preview from Secure Roaming in 802.11 Networks
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Cellular Telephony: Wireless Roaming Pioneers
To Base
Station
Controller
Operation and
Maintenance
Center
To Home
Location
Register
To Mobile
Switching
Center
Equipment
Identification
Register
To Mobile
Switching
Center
Authentication
Center
Figure 2.7: An Illustration of the Operation Subsystem.
are shown in Figure 2.6. If the MSC is a Gateway MSC (GMSC), it also connects the
wireless network to the PSTN. The MSC reports subscriber activity to the Operation
and Maintenance Center (OMC) in support of billing operations and performs roam-
ing operations with the aid of the two special databases that we describe in the
following text [22].
4. The HLR maintains identification ...
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