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Polycom RealPresence Collaboration Server (RMX) 1500/2000/4000 Administrator’s Guide
16-72 Polycom, Inc.
NAT (Network Address Translation) Traversal
NAT Traversal is a set of techniques enabling participants behind firewalls to connect to
conferences, hosted on the RMX, remotely using the internet.
Session Border Controller (SBC)
All signaling and media for both SIP and H.323 will be routed through an SBC.
The following SBC environments are supported:
• SAM - a Polycom SBC
• Acme Packet - a 3rd party SBC
• VBP - Polycom Video Border Proxy
Deployment Architectures
The following NAT Traversal topologies are given as examples. Actual deployments will
depend on user requirements and available infrastructure:
Remote Connection Using the Internet
The following Remote Connection call flow options are supported:
Table 16-40 Remote Connection
Enterprise Client CMA Client
Environment Registered SBC Registered Environment
SIP / H.323 Yes SAM / Acme Packet
Yes SIP
SIP / H.323 No SAM / Acme Packet
No SIP