IP Telephony Solution Guide

Organization......Page 9 Revision History......Page 10 Related Information......Page 11 IP Telephony Architecture Overview......Page 13 Evaluating and Documenting the Existing Data Infrastructure......Page 15 LAN/Campus Environment......Page 16 LAN/Campus Topology......Page 17 Location of Servers and Gateways......Page 18 Device Analysis......Page 19 Network Baseline......Page 20 WAN Topology......Page 21 Location of Servers and Gateways......Page 22 Device Analysis......Page 23 Evaluating and Documenting the Existing Telecom Infrastructure......Page 24 Examining the Existing Telecom Topology......Page 25 Examining Voice Trunking......Page 26 Examining the Existing Dial Plan......Page 31 Evaluating and Documenting the Existing Power/Cabling Infrastructure......Page 35 Data Center Power Requirements......Page 36 Wiring Closet Power......Page 37 IP Telephony Availability Requirements......Page 38 Hardware Reliability......Page 39 Software Reliability......Page 40 Link/Carrier Availability......Page 41 Power/Environment......Page 43 Network Design......Page 45 User Error and Process......Page 47 Collecting Information on the Current WAN Environment......Page 48 Device Information......Page 49 Resource Utilization......Page 50 Performance Information......Page 51 Determining Voice Bandwidth Requirements......Page 52 Analyzing Upgrade Requirements......Page 55 Assessing Results......Page 57 IP Telephony Capacity Planning......Page 58 Planning for Network Capacity and Performance......Page 59 Solution Manageability Requirements......Page 62 Functional Areas of Network Management......Page 63 IP Telephony Infrastructure Management......Page 64 Staffing and Expertise Requirements......Page 65 Operations Support Plan......Page 70 Related Information......Page 71 The Importance of QoS......Page 72 Delay and Jitter......Page 73 Connecting the IP Phone......Page 78 Single Cable IP Phone Installation......Page 79 Multiple Cable IP Phone Installations......Page 84 Separate Access Layer Switches......Page 86 Campus Switching Designs for IP Telephony......Page 87 Marking Control and Management Traffic......Page 90 Catalyst 6000 Access Layer......Page 93 Catalyst 4000 Access Layer......Page 100 Catalyst 3500 Access Layer......Page 102 Catalyst 6000 Distribution Layer......Page 105 Catalyst 6000 Distribution/Core Running Native CiscoIOS......Page 108 Building a Branch Office......Page 112 Using a Single Subnet at the Branch Office......Page 113 Using 802.1Q for Trunking Separate Voice/Data Subnets at the Branch Office......Page 115 Classifying VoIP Control Traffic at the Branch......Page 116 Enabling the Wide Area Network......Page 117 WAN QoS Overview......Page 118 Point-to-Point WAN......Page 127 Frame Relay WAN......Page 130 ATM WAN......Page 135 Frame Relay to ATM Internetworking WAN......Page 139 Summary......Page 142 Cisco Packet Fax and Modem Support Guidelines......Page 143 CiscoIOS Modem Support......Page 144 VG200 Modem Support......Page 145 Catalyst 6000 Modem Pass-Through (G.711)......Page 146 Future T.38 Fax-relay Support......Page 147 Service Provider Perspective......Page 148 IP Telephony Emergency Call Support......Page 151 Gateway Selection......Page 154 Calling Party Number......Page 155 Security Considerations for IP Telephony Networks......Page 156 Authentication, Authorization, and Accounting......Page 157 Secure CiscoIOS Devices......Page 158 Secure CatOS Devices......Page 163 CiscoIOS Security/Firewall Features......Page 164 Securing CallManager Servers......Page 165 Microsoft Windows 2000 Tasks......Page 166 Microsoft Internet Information Server (IIS) Tasks......Page 167 Microsoft SQL Server Tasks......Page 171 Voice Messaging with Cisco uOne 4.1E......Page 177 Configuration Overview......Page 178 Sample VG200 Configuration Details......Page 201 Example Catalyst 6000 24-Port FXS Gateway Configuration Details......Page 202 Integrating SMDI Voice Mail Over IP WAN......Page 209 Topology......Page 210 Asynchronous Tunneling Configuration......Page 211 Migrating to an IP Telephony Network......Page 212 Related Information......Page 213 General Site Information......Page 214 Team Information......Page 217 Implementation Considerations......Page 218 Site Survey Tables......Page 219 Gathering Site Information......Page 220 LAN Requirements......Page 221 WAN Hardware Requirement......Page 222 Quality of Service Requirements......Page 223 Gateway Requirements......Page 224 IP Telephony Requirements......Page 226 Power and Environmental Requirements......Page 229 Validating Implementation Readiness......Page 230 Voice Network Analysis......Page 231 Data Network Analysis......Page 232 WAN Requirement Analysis......Page 233 IP Telephony Requirement Analysis......Page 234 WAN Connection Templates......Page 236 Address Plan Templates......Page 237 CallManager Configuration Templates......Page 238 Dial Plan Templates......Page 241 Customer Ordered Equipment......Page 242 Implementing the Solution......Page 243 Physically Installing Equipment in Cabinet......Page 244 Verifying Circuit Termination in Customer Patch Panel......Page 245 Dial Plan Architecture......Page 246 Dial Plan Configuration......Page 247 Configuring E-911......Page 248 Dial Plan......Page 249 Gateway Selection......Page 250 Gateway Interfaces......Page 255 Critical E-911 Considerations for All IP Telephony Deployment Models......Page 256 Critical E-911 Considerations for Single Site Deployment Models......Page 258 Implementing a Migration Strategy......Page 259 Migration Phases......Page 260 Verification Process......Page 261 Acceptance Criteria......Page 262 Customer Acceptance Certification......Page 263 Case Studies......Page 264 Operations Support and Planning......Page 265 Defining Technical Goals and Constraints......Page 266 IP Telephony Application Behavior and Requirements......Page 267 Service Level Goals......Page 269 Defining Service Elements......Page 270 Reactive Service Elements......Page 271 Proactive Service Elements......Page 281 Staffing and Support Model......Page 287 Fault Management......Page 289 CiscoWorks2000......Page 290 Third-party Applications......Page 291 Selection Criteria for Management Tools......Page 293 Fault Management......Page 296 Configuration File Management......Page 301 Accounting Management......Page 302 Performance Management......Page 304 Security Management at the Device Level......Page 311 Managing The Application Layer with CallManager......Page 315 Managing Cisco IP Phones......Page 323 NMS Reference Architecture......Page 326 Planning, Design, and Implementation......Page 327 Managing Cisco CallManager with CISCO-CCM-MIB......Page 329 Summary of IP Telephony Network Management Products......Page 331 Securing IP Telephony Networks......Page 332 Establishing Physical Security......Page 333 CiscoIOS Routers......Page 334 Catalyst Ethernet Switches......Page 335 Choosing Good Passwords......Page 336 Secure Shell......Page 337 Simple Network Management Protocol......Page 338 Warning Banners......Page 339 Remote Copy/Remote Shell......Page 340 Neighbor Authentication......Page 341 Setting Device Time, Timestamps, and Logging......Page 342 Designing the IP Network......Page 344 Protecting the VoIP Gateways......Page 353 Firewalls......Page 354 Intrusion Detection Systems......Page 356 Securing the CallManager Server......Page 357 Turning Off Unnecessary Services......Page 358 Securing File System Access......Page 359 System Auditing and Logging......Page 362 Securing IIS......Page 363 Securing the SQL Server......Page 365 Moving All IP Phone Web Services to a Separate Server......Page 366 CiscoCallManager Administration Details......Page 367 Microsoft Performance Monitor......Page 368 Microsoft Event Viewer......Page 369 CallManager Trace......Page 371 SDL Trace......Page 373 Call Detail Records (CDR) and Call Management Records (CMR)......Page 375 Q.931 Translator......Page 378 Troubleshooting CiscoCallManager Devices......Page 379 Voice Quality......Page 380 Phone Resets......Page 389 Dropped Calls......Page 390 Cisco CallManager Feature Issues......Page 393 Reorder Tone Through Gateways......Page 403 Gateway Registration Problems......Page 404 Gatekeeper Registration Problems......Page 408 Skinny Station Registration Process......Page 409 CiscoCallManager Initialization Process......Page 411 Self-Starting Processes......Page 412 CiscoCallManager Registration Process......Page 413 CiscoCallManager KeepAlive Process......Page 414 CiscoIPPhone-to-CiscoIPPhone Exchange of Skinny Station Messages During Call Flow......Page 415 CiscoCallManager Intra-Cluster Call Flow Traces......Page 416 Cisco IOS Gateways......Page 419 Inter-Cluster IP Phone to IP Phone......Page 427 Call Flow Traces......Page 429 Failed Call Flow......Page 430 Reading Records......Page 431 Known Issues......Page 432 Fields in a Call Detail Record......Page 433 Call Records Logged By Call Type......Page 441 Call Management Records Logged By Call Type......Page 442 Cause Codes......Page 443 Alarms......Page 445 IP Telephony Requirement Analysis......Page 447 Recommended Implementation Configurations......Page 448