Cisco 3545 PRI Installation And Upgrade Manual page 44

Serial Gateway Cable Connections and Pin-outs
DB-37 Connector
Figure 2-17
Figure 2-17
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Installation and Upgrade Guide for Cisco Unified Videoconferencing 3545 PRI Gateway and 3545 Serial Gateway Releases 5.6 and 5.7
2-24
shows the DB-37 pin layout.
DB-37 Pin Layout
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Chapter 2 Installing the Cisco Unified Videoconferencing 3545 Gateway
OL-17011-01