www.newrocktech.com
10-63
10.1.1 Collecting Information
Fault information can be collected from:
Feedback from the customer
Alarms generated by the network management system
Routine maintenance or inspection
Collecting raw information is of great importance during the initial troubleshooting stage. Raw
information helps maintenance personnel narrow down the possible causes, ensuring a fast and accurate
fault location. In case of faults, especially major faults, take caution that no action is performed until all
necessary information is collected.
10.1.2 Troubleshooting the Fault
The cause of a fault is unique at each specific circumstance. Through analysis and comparisons, the
exact cause of the fault can be identified. A fast and accurate fault diagnosis improves the
troubleshooting efficiency, preventing the fault from further deterioration due to aimless
troubleshooting. Locating the cause of fault is an important step in the process of technical
troubleshooting, which provides guide for determining the means or measures for resolving the fault.
10.1.3 Resolving the Fault
After identifying causes of a fault, you can troubleshoot the fault accordingly.
Fault troubleshooting is a process of taking proper measures or steps (such as changing configurations
or restarting the device) to rectify a fault and restore the system.
10.2 Troubleshooting Cases
10.2.1 IP terminals and ATA are unable to register successfully with the
OM20/50
Fault Description
IP terminals (IP phone and softphone) and ATA cannot register to the OM20/50
Cause Analysis
The network between the IP terminals (IP phone and softphone) and ATA, and OM20/50 fails.
The registration server and signaling ports are improperly configured.
The registration account name, user name and password are incorrectly set.
There are special restrictions.
Troubleshooting and Solution
Check whether the Registrar server is the address of SIP server and whether the signaling port is
correct.
