Programming instructions

167
Troubleshooting
About this Chapter
This chapter provides standard procedures to troubleshoot the most
common problems and is organized as follows:
• Troubleshooting Tools (page 168)
• Using the Phone Debug Option (page 170)
• Using the Dual Mode Phone Debug Option (page 171)
• General Troubleshooting Steps (page 181)
• View Alarms (page 182)
• Embedded System Management (ESM) (page 183)
• Software Installation and Upgrade (page 183)
• Downgrading to a Previous Software Release (page 185)
• Software Backup and Restore (page 186)
• Audio File Downloads (page 188)
• Troubleshoot Hardware
- Alarms (page 189)
- Embedded T1/E1 (PRI, T1/D4, or MSDN/DPNSS) (page 191)
- Embedded BRI (page 193)
- Network Services Units (NSUs) (page 194)
- Analog Services Units (ASUs) (page 196)
- In-Line Power (page 197)
- Digital Service Units (page 201)
• Troubleshooting Digital Trunks (page 203)
• Troubleshoot the Network
- CXi-specific Issues (page 207)
- IP Trunking (page 204)
- E2T (page 206)
- IP Phone Registration (page 210)
• Troubleshoot Phones and Peripherals
- Phone Connection (page 217)
- Phone Audio Quality (page 222)