
Chapter 1 Functionality
About Cisco Unified Videoconferencing 3545 Gateway Applications and Topologies
About Gateway Encryption
The serial gateway enables encrypted videoconferencing between H.323 endpoints on the IP network and endpoints on remote sites by connecting to external encryption/decryption devices via serial interfaces (as shown in Figure 
| Figure  | 
| H.323 | 
| endpoint | 
| H.323 | 
| endpoint | 
| Figure  | 
Encrypted Videoconferencing
IP network
Isolator
IMUX
ISDN
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gateway
Encrypted Videoconferencing via Satellite
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| H.323 | 
| endpoint | 
| H.323 | 
| endpoint | 
IP network
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| Cisco | Satelite | |
| access | ||
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| gateway | 
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 | Installation and Upgrade Guide for Cisco Unified Videoconferencing 3545 PRI Gateway and 3545 Serial Gateway Release 5.5 | 
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