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Module 1: A Methodology and Tools for Troubleshooting Cisco Unified Communications Systems
Lesson 1: Introducing Cisco Unified Communications Systems Troubleshooting
- Cisco Unified Communications Systems
- Network Infrastructure
- Cisco Unified CallManager
- Cisco Unity
- Voice Clients
Lesson 2: Understanding Troubleshooting Methodology in Cisco Unified Communications Systems
- Preparing Your Network for Troubleshooting and Recovery
- Systematic Troubleshooting Methods
- Define the Problem
- Gather Facts
- Consider Possibilities
- Create Action Plan
- Implement Action Plan
- Observe Results
- Restart the Problem-Solving Process
- Document Results
Lesson 3: Gathering Information for Troubleshooting
- Cisco Unified CallManager Serviceability
- Alarms
- Configuring Trace
- Dialed Number Analyzer
- Controlling Services
- Real-Time Monitoring Tool
- Performance Monitor and Data Logging
- Alerts
- Trace and Log Central
- Trace Output
- Syslog Viewer
- Command-Line Interface
- Sniffer Traces
Module 2: Troubleshoot Cisco Unified CallManager-Related Issues
Lesson 1: Troubleshooting Common Endpoint Registration Issues
- Endpoint Registration Troubleshooting
- Cisco IP Phone Initialization
- Troubleshooting Endpoints with Ping
- Troubleshooting Device Issues
- Troubleshooting Cisco Unified CallManager Issues
- Troubleshooting SIP Endpoints
Lesson 2: Troubleshooting Cisco Unified CallManager Availability Issues
- Cisco Unified CallManager System Stops Responding
- Cisco Unified CallManager Administration Does Not Display
- Slow Web Server Response
Lesson 3: Troubleshooting Cisco Unified CallManager Security Issues
- Securing IP Voice Communication
- Troubleshooting Security on Endpoints
- Troubleshooting Issues with the CAPF Service
- Troubleshooting Authentication String Errors
- Troubleshooting LSC Validation
- Troubleshooting CTL Security Tokens
Lesson 4: Troubleshooting Database Replication Issues
- Database Replication Issues
- Diagnosing Database Replication with CallManager 5.x
- Diagnosing Database Replication with CallManager 4.x
- Resolving Database Replication Issues
- Re-Creating the Subscription of CallManager 5.x
- Re-Creating the Subscription of CallManager 4.x
Lesson 5: Troubleshooting LDAP Replication Issues
- LDAP Synchronization
- Synchronization Issues with the DC-Directory Service
- Reinitializing LDAP Replication
- Resolving Directory Synchronization Issues
- Troubleshooting Microsoft Active Directory Integration
- Directory Synchronization
- Resolving Informix Database Synchronization Issues
- Resolving Synchronization Issues Using Active Directory
Lesson 6: Troubleshooting Common Gateway Registration Issues
- Gateway Registration Issues
- MGCP Gateway Communications
- Verifying Gateway Status and Configuration
- Viewing Event Log Messages
- Troubleshooting Commands for Cisco Gateways
- Cisco IOS MGCP Gateway Troubleshooting
- H.323 and SIP Gateway Communications
Module 3: Troubleshoot Call Setup Issues
Lesson 1: Introducing Call Setup Issues and Causes
- Call Setup Issues
- Single-Site Call Setup Failure
- Intracluster Call Setup Failure
- Intercluster Call Setup Failure
Lesson 2: Troubleshooting On-Premises Single-Site Calling Issues
- Understanding Digit Collection in Cisco Unified CallManager
- On-Premises Call Setup Failure
- Partitions
- Calling Search Space
- Troubleshooting Single-Site Call Setup Failure
- One-Way Calling
- Call-Forwarding Issues
- Forwarding to Voice Mail Issues
Lesson 3: Troubleshooting Offsite Call Issues
- Common Offsite Calling Issues
- Gateway Troubleshooting Checklist
- Digit Collection and Analysis
- Issues with DDI
- Dial Plan Issues
- Troubleshooting Common Voice Issues
Lesson 4: Troubleshooting Intercluster Dial Plan Issues
- Multiple-Site Dial Plan Issues
- Overlapping Dial Plan
- Call Setup to Another Cluster
- Immediate Remote Call Drops
Lesson 5: Troubleshooting Gatekeepers in a Cisco Unified Communications System
- Gatekeeper Overview
- Review of RAS Messages
- Gatekeeper show and debug Commands
- Discovery and Registration Issues
- Gatekeeper Call Admission Issues
- Gatekeeper Clustering and Alternate Gatekeeper Issues
Module 4: Troubleshoot Voice and Video Quality Issues
Lesson 1: Defining Common Voice and Video Quality Issues
- Quality Issues in Cisco Unified Communications Systems
- Lack of Bandwidth
- End-to-End Delay
- Jitter
- Packet Loss
- QoS Requirements
- LAN QoS Considerations
Lesson 2: Troubleshooting VoIP Quality Problems
- Troubleshooting VoIP Quality Overview
- Identifying and Isolating Voice Quality Problems
- Troubleshooting Layer 2 Quality Problems
- Troubleshooting Voice Quality Issues on a Gateway
- QRT for Cisco IP Phones
- Troubleshooting Scenarios
- Voice Activity Detection
Lesson 3: Troubleshooting Echo
- Defining Echo in a Cisco Unified Communications System
- Sources and Types of Echo
- Defining the Echo Canceller
- Measuring Echo in a Cisco Unified Communications System
- Eliminating Echo in a Cisco Unified Communications System
Lesson 4: Troubleshooting Quality Problems of Cisco Unified Video Advantage
- Issues with Cisco Unified Video Advantage
- Verify CPU Speed
- CPU Throttling Solutions
- Cisco Unified CallManager IP Phone Settings
- Setting up a PC to Capture a System Crash
- USB Out of Bandwidth
- Remote Video Loss
- Cisco Audio Session Tunnel Traces
Module 5; Application Integration and Media Resource Issues
Lesson 1: Troubleshooting Common Cisco Unity Integration Issues
- How MWIs Function
- MWI Not Working
- MWI Is Delayed
- Call Transfer Problems
Lesson 2: Troubleshooting CTI Issues
- Computer Telephony Integration
- Cisco Unified CallManager CTI Manager
- Cisco Unified CallManager JTAPI and TSP
- CTI-Controlled Devices
- CTI Quick Buffer Encoding
- CTI Route Points and CTI Ports
- Troubleshooting Cisco Unified CallManager CTI Manager
- Troubleshooting Cisco Unified CallManager JTAPI and TSP
Lesson 3: Troubleshooting Media Resources
- Media Resources Overview
- Hardware-Based Media Resource Issues
- Software-Based Media Resource Issues
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