Delivers the proven solutions that make a difference in your Cisco IP Telephony deployment
- Learn dial plan best practices that help you configure features such as intercom, group speed dials, music on hold, extension mobility, and more
- Understand how to manage and monitor your system proactively for maximum uptime
- Use dial plan components to reduce your exposure to toll fraud
- Take advantage of call detail records for call tracing and accounting, as well as troubleshooting
- Utilize the many Cisco IP Telephony features to enable branch site deployments
- Discover the best ways to install, upgrade, patch, and back up CallManager
- Learn how backing up to remote media provides both configuration recovery and failure survivability
IP telephony represents the future of telecommunications: a converged data and voice infrastructure boasting greater flexibility and more cost-effective scalability than traditional telephony. Having access to proven best practices, developed in the field by Cisco® IP Telephony experts, helps you ensure a solid, successful deployment.
Cisco CallManager Best Practices offers best practice solutions for CallManager and related IP telephony components such as IP phones, gateways, and applications. Written in short, to-the-point sections, this book lets you explore the tips, tricks, and lessons learned that will help you plan, install, configure, back up, restore, upgrade, patch, and secure Cisco CallManager, the core call processing component in a Cisco IP Telephony deployment. You'll also discover the best ways to use services and parameters, directory integration, call detail records, management and monitoring applications, and more.
Customers inspired this book by asking the same questions time after time: How do I configure intercom? What's the best way to use partitions and calling search spaces? How do I deploy CallManager regionally on my WAN? What do all those services really do? How do I know how many calls are active? How do I integrate CallManager with Active Directory? Years of expert experiences condensed for you in this book enable you to run a top-notch system while enhancing the performance and functionality of your IP telephony deployment.
Salvatore Collora, CCIE® No. 4321, is a network consulting engineer for Cisco Systems® Advanced Services who specializes in implementing IP telephony and security in large customer networks. He has deployed many large CallManager-based IP telephony networks and often works in emergency situations to fix improper installation and configuration of CallManager.
Ed Leonhardt, CCIE No. 3264, is a consulting systems engineer and serves as a technical lead in the combined Enterprise/Service Provider IP Telephony Technology Leadership Program at Cisco Systems. He drives new product requirements to the individual product teams and guides overall system engineer development in technologies surrounding IP telephony.
Anne Smith is a technical writer in the CallManager engineering group at Cisco Systems. She has written technical documentation for the Cisco IP Telephony solution since CallManager release 2.0 and was part of the Selsius Systems acquisition in 1998. She is a coauthor of Cisco CallManager Fundamentals and Troubleshooting Cisco IP Telephony from Cisco Press.
1. Planning the CallManager Implementation.
Read the Solution Reference Network Designs. Check the Compatibility Matrix. Assess the Current Data Infrastructure. Assess the Current Voice Environment. Choose the Right Equipment. Create a Training Curriculum for Users and Administrators. Establish a Rollout Plan. Summary.
2. Planning Centralized Call Processing Deployments.
Establishing Basic WAN Connectivity. Tuning Quality of Service on the WAN. Preventing WAN Oversubscription by Using Locations-Based Call Admission Control (CAC). Dynamically Rerouting Calls Using Automated Alternate Routing. Survive WAN Outages by Using SRST. Choosing Gateways to Support Centralized Call Processing Functionality. Summary.
3. Installing CallManager.
Before the Installation. During the Installation. After the Installation. Summary.
4. Backing Up and Restoring the Environment.
Consider the Whole Deployment. Five Steps to a Solid Backup. Planning Your Backup Strategy. Things to Be Aware of When Restoring from a BARS Backup. Troubleshooting Typical Backup Problems. Summary.
5. Upgrading and Patching CallManager.
Installing Windows OS and CallManager Service Releases. Summary.
6. Securing the Environment.
Classes of Voice Security Threats. Create a Security Policy to Guide Your Efforts. Avoid Single Points of Security Policy Failure. Review an Infrastructure Security Feature Checklist. Harden Access to Routers and Switches. Harden Access via IP Phones. Harden CallManager and Voice Application Servers. Secure Remote Administration of CallManager. Secure Endpoint Provisioning. Secure Endpoint Operation. Secure Interserver Communication for MGCP, SIP, H.323, and Java Telephony API Signaling via IPSec. Implementation Considerations. Summary.
7. Configuring CallManager and IP Telephony Components.
General CallManager System Best Practices. IP Phone Best Practices. Gateway Best Practices. Dial Plan Best Practices. Best Practices for Configuring Features. Tools and Application Best Practices. Summary.
8. Managing Services and Parameters.
About Services. About Service Parameters. Cisco CallManager Service and Related Parameters. Cisco TFTP Service. Cisco Messaging Interface Service and Related Parameters. Cisco IP Voice Media Streaming App Service. Cisco CTIManager Service. Cisco Telephony Call Dispatcher Service. Cisco MOH Audio Translator Service and Related Parameter. Cisco RIS Data Collector Service and Related Parameters. Cisco Database Layer Monitor Service and a Related Parameter. Cisco CDR Insert Service. Cisco CTL Provider Service. Cisco Extended Functions Service and a Related Parameter. Cisco Serviceability Reporter Service. Cisco WebDialer Service. Cisco IP Manager Assistant Service. Cisco Extension Mobility Service and Related Parameters. General Enterprise Parameters. Summary.
9. Using Multilevel Administration.
Changes from the Previous Release. Enable MLA for Added Security. No MLA Access When the Publisher Is Down. Enable Tracing for MLA. Monitor the Access Log for Malicious Login Attempts. Check the Privileges Report. Create User-Specific Accounts. Create Custom Functional Groups. Create Custom User Groups. Assign Group Privileges. Manage Overlapping Permissions. Keep an Eye on Your System. Maintain the Tightest Security Possible. Summary.
10. Mastering Directory Integration.
Directory Access Versus Directory Integration. Directory Access for IP Telephony Endpoints. Directory Integration for CallManager. Best Practices for Directory Integration. Summary.
11. Administering Call Detail Records.
Use CDR Data for Accounting/Billing or Troubleshooting. Enable CDR Data Collection. Limit the Number of CDR and CMR Entries. Configure CDR Enterprise Parameters. Enable Network Time Synchronization on All CallManagers and Update the Configuration File if Needed. Understanding the Call Detail Record Format. Understanding CDR Data Through Call Examples. Search the CDR SQL Database. Export CDR Data for Further Analysis. Convert Epoch Time to Human-Readable Time Using the CDR Time Converter Utility. Convert a 32-Bit Signed Integer Value to an IP Address. Using the CAR Tool. Third-Party CDR Applications. Summary.
12. Managing and Monitoring the System.
Choosing the Best Overall Methodology. Make Monitoring a Daily Process. Configuring Authentication, Authorization, and Accounting on Cisco IOS Gateways. Using Syslog to Monitor the System. Using SNMP Where Possible. Use Microsoft Performance for Real-Time Data If It Fits Your Current Model. Check the Serviceability Reports Archive Every Day. Check the CallManager Trace Facility Configuration and Log Files. Using Windows Terminal Services. Using VNC. Summary.
13. Using Real-Time Monitoring Tool.
Configuring RTMT. Summary.
Appendix CallManager 4.0 New Feature Description.
CallManager Release 4.0(1) Feature List.