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300-820 Exam Topics and Domains
300-820 is organized into 4 weighted domains. Expect to work with Certificate management, DNS servers, ICE, SIP trunk diagnostics, and more.
Key Concepts
Describe the complications of NAT in a Collaboration environment
- NAT traversal
- One-way audio issues
- Media path optimization
- Signaling complications
- NAT types and their impact
- Common NAT-related issues
- Troubleshooting NAT problems
- Cisco Expressway
- TURN
- STUN
- ICE
Understand NAT complications in collaboration environments
Describe the purpose of ICE, TURN and STUN
- Interactive Connectivity Establishment
- STUN server functionality
- TURN relay
- NAT traversal techniques
- When to use TURN vs STUN
- ICE negotiation process
- Server requirements
- ICE
- TURN servers
- STUN servers
Understand NAT traversal technologies and their applications
Describe Expressway media traversal
- Media paths
- Traversal zones
- RTP/RTCP handling
- Firewall traversal
- Media flow through Expressway
- Port requirements
- Bandwidth management
- Cisco Expressway-E
- Cisco Expressway-C
Understand how Expressway handles media traversal
Describe protocol interworking on the Expressway
Configure and troubleshoot protocol interworking
Describe Expressway Licensing
Understand and implement Expressway licensing models
Describe SIP media encryption mode
Configure appropriate SIP media encryption modes
Describe Expressway Core dial plan elements
Design and implement Expressway dial plans
Describe key Expressway settings
Configure essential Expressway settings
Describe Expressway backup and restore procedure
- Backup strategies
- Restore procedures
- Cluster backup
- Standalone backup
- Backup best practices
- Restore scenarios
- Cluster considerations
Expressway backup/restore
Implement backup and restore procedures for Expressway
Initial Expressway Configurations
Configure key Expressway settings
Implement key Expressway configurations
Configure Expressway Core dial plan elements
Build effective dial plans for Expressway Core
Configure toll fraud prevention on Expressway series
- Fraud prevention rules
- Call blocking
- Pattern restrictions
- Authentication requirements
- Prevention strategies
- Rule implementation
- Testing procedures
- Toll fraud prevention
- CPL scripts
Implement toll fraud prevention without custom CPL scripts
Configure a Business to Business (B2B) collaboration solution
Deploy complete B2B collaboration solutions
Troubleshoot a Business to Business (B2B) collaboration solution
Troubleshoot B2B collaboration deployments effectively
Mobile and Remote Access
Configure a Mobile and Remote Access (MRA) solution
Deploy complete MRA solutions for remote workers
Troubleshoot a Mobile and Remote Access (MRA) solution
Effectively troubleshoot MRA deployments
Cisco Webex Technologies
Describe the signaling and media flows used in a Cisco Webex Video Mesh deployment
- Cascade connections
- Media optimization
- Signaling paths
- Local breakout
- Call flow scenarios
- Media optimization
- Deployment architectures
- Webex Video Mesh
- Video Mesh Node
Understand Webex Video Mesh architecture and flows
Configure Webex Hybrid Services
Deploy and configure Webex Hybrid Services
Describe Webex architecture components
Understand Webex platform architecture
Describe the administration functions in Webex
Administer Webex organizations effectively
Configure user management integrations
Implement user management integrations
Describe Webex calling
Understand Webex Calling deployment options
How do I earn this certification?
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How to study for this exam?
Use the official PlanetCert Practice Test alongside the study plan below to prepare efficiently for 300-820.
What's changed on this exam?
Who should take this exam?
This exam is typically taken by Network Engineers and Collaboration Engineers.
- 3-5 years of experience implementing and operating Cisco collaboration solutions
- Familiarity with Cisco Expressway configurations
- Understanding of Cisco Webex technologies
- Knowledge of collaboration cloud and edge solutions
- Experience with Cisco Unified Communications Manager