Service Provider Modules

Figure 3-13 shows the modules within the Service Provider functional area. The enterprise itself does not implement these modules; however, they are necessary to enable communication with other networks, using a variety of WAN technologies, and with Internet service providers (ISP). The modules within the Service Provider functional area are as follows:

Figure 3-13

Internet Service Provider module

PSTN module

Frame Relay/ATM module

Service Provider Functional Area

The following sections describe each of these modules.

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