Reveals the methodology you need to resolve complex problems in an IP telephony network
IP telephony represents the future of telecommunications: a converged data and voice infrastructure boasting greater flexibility and more cost-effective scalability than traditional telephony. The ability to troubleshoot an IP telephony environment and the underlying network infrastructure is vitally important, just as it is in any complex system.
Troubleshooting Cisco IP Telephony teaches the troubleshooting skills necessary to identify and resolve problems in an IP telephony solution. This book provides comprehensive coverage of all parts of a Cisco IP Telephony (CIPT) solution, including CallManager, IP phones, gateways, analog devices, database and directory replication, call routing, voice mail, applications, network infrastructure, and more. You'll learn how to read trace files, determine when to turn on tracing and Cisco IOS(r) Software voice debugging, and how to troubleshoot voice quality issues.
Troubleshooting Cisco IP Telephony shows you how to break down problems to find the root cause. Descriptions of each part of the CIPT solution help you understand the functionality of each part of the solution and how each part interacts with other parts of the solution. You'll then learn what steps to take and tools to use to identify and resolve the cause of the problem.
Caution: These tools are not officially supported by Cisco Systems. If you download, install, or use these tools, you do so at your own risk. Cisco Systems, Inc. is not responsible for correcting problems that may arise as a result of using this unsupported tool.
Q.931 Translator 22.214.171.124
The Q.931 Translator utility decodes Q.931 and H.225 messages from a CallManager CCM trace file. Refer to Chapter 3, "Understanding the Troubleshooting Tools" for more information on using the Q.931 Translator tool.
CCEmail allows you to set up e-mail or pager alerts based on the values of performance counters available in Microsoft Performance (PerfMon). Refer to Chapter 3, "Understanding the Troubleshooting Tools," for more information on using CCEmail and PerfMon.
CDR Time Converter
This utility converts the timestamps from CallManager call detail records (UNIX Epoch Time) to standard date/time format. Refer to Chapter 3 for more information using the CDR Time Converter utility.
Dick Tracy Utility
Dick Tracy is an advanced troubleshooting tool for the WS-X6608 and WS-X6624 voice gateways. For detailed information on using the Dick Tracy utility, refer to Chapter 3 and Chapter 6, "Voice Gateways."
Download - 59 KB -- Troubleshooting Tips (Word doc)
Tech Tips & Training feature from Packet® magazine
Download - 332 KB -- "IP Telephony Detective" by Paul Giralt (PDF)
Download - 760 KB -- Chapter 1: Troubleshooting Methodology and Approach
1. Troubleshooting Methodology and Approach.
Developing a Troubleshooting Methodology or Approach. Production Versus Nonproduction Outages. Step 1: Gathering Data About the Problem. Step 2: Analyzing the Data Collected About the Problem. Case Study: Resolving a Problem Using Proper Troubleshooting Methodology. Summary.
Network Infrastructure. IP Telephony Infrastructure. Cisco AVVID IP Telephony Applications. Summary.
Time Synchronization. Reading CCM Traces. Reading SDL Traces. Microsoft Performance (PerfMon). CCEmail. CallManager Serviceability. Call Detail Records (CDR) and the CDR Analysis and Reporting (CAR) Tool. CDR Time Converter. Event Viewer. Q.931 Translator and Enhanced Q.931 Translator. Dick Tracy. Sniffer Traces. Voice Codec Bandwidth Calculator. Bug Toolkit (Formerly Bug Navigator). Remote Access Tools. Websites and Further Reading. Best Practices. Summary.
Troubleshooting Inline Power. Troubleshooting Network Connectivity and Skinny Registration. Additional Tools for Troubleshooting Skinny Client Registration Problems. Best Practices. Summary.
Understanding IP Phone Behavior. Troubleshooting IP Phone Problems. 79xx Series IP Phone 3-port Switch Operation. Best Practices. Summary.
Cisco IOS Voice Gateways. Understanding Dial Peer Matching in Cisco IOS Software. Troubleshooting TDM Interfaces on Cisco IOS Gateways. Understanding the FXO Disconnect Problem. Troubleshooting Digital Interfaces. Understanding MGCP. Cisco IOS MGCP Gateways. Cisco IOS Gateways Using the H.323 Protocol. Troubleshooting Problems with Ringback and Other Progress Tones. Intercluster Trunks. Troubleshooting the WS-X6608 and WS-X6624 Voice Gateways. Best Practices. Summary.
Fixed and Variable Delays. Analyzing and Troubleshooting Choppy and Garbled Audio. Troubleshooting Problems with One-way or No-way Audio. Troubleshooting Echo Problems. Best Practices. Summary.
Understanding Fax Machine Operation. Understanding Fax/Modem Passthrough Versus Fax Relay. The Effect of Packet Loss and Jitter on Fax Machines and Modems. First Steps in Troubleshooting Fax and Modem Problems. Isolating and Troubleshooting Fax Problems. Best Practices. Summary.
Understanding Closest-match Routing. Understanding Calling Search Spaces and Partitions. Understanding and Troubleshooting Transformations and Masks. Understanding and Troubleshooting Translation Patterns. Understanding Route Filters. Digit Transformation Troubleshooting. Call Routing Troubleshooting. Troubleshooting Hold, Transfer, Park, and Call Pickup. Getting the Dialing Forest Traces. Best Practices. Summary.
Understanding Call Preservation. Troubleshooting Call Preservation Issues. Best Practices. Summary.
Media Resource Groups (MRGs) and Media Resource Group Lists (MRGLs). Understanding Codec Selection. Transcoder Resources. Conference Bridge Devices. Best Practices. Summary.
Understanding MOH. Troubleshooting Data Points. Troubleshooting MOH. Best Practices. Summary.
Locations-based CAC. Gatekeeper Call Admission Control. Best Practices. Summary.
Cisco Unity. SMDI Integration. Octel Voice Mail Digital Integration Via a DPA Voice Mail Gateway. Best Practices. Summary.
SRST Operation. Best Practices. Summary.
Customer Response Applications (CRA). Cisco CallManager Attendant Console. Cisco Personal Assistant. Cisco IP SoftPhone. Cisco IP Phone Services. Cisco IP Videoconferencing (IP/VC). Cisco Conference Connection. Cisco Emergency Responder (ER). Summary.
Understanding the Publisher-Subscriber Model. The Role of Name Resolution and Passwords in Replication. Microsoft SQL Server Enterprise Manager. Correcting Replication Errors. CDR Replication Issues. Best Practices. Summary.
Directory Integration Versus Directory Access. Using the CallManager Embedded Directory. Understanding and Troubleshooting Active Directory Integration. Understanding and Troubleshooting Netscape iPlanet Integration. Best Practices. Summary.
Download - 211 KB -- Index