IBM SG24-4817-00 - Manual (Page 86)

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Figure 29. A Typical A T M WAN M o d u l e Configuration
The scenario depicts a possible client/server environment in which the
workstation must access both servers, and in which both servers must exchange
information such as files and images. The ATM WAN Module allows each site to
access the common backbone network at the most cost-effective speed, from E-3
for the workstation to DS-3/T3 and even STM-1/OC-3 for the servers.
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ATM Workgroup Solutions: Implementing the 8285 ATM Switch