Yealink SIP-T19 E2 T4 Series, Administrator'S Manual

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Troubleshooting
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Troubleshooting
This chapter provides an administrator with general information for troubleshooting some
common problems that he (or she) may encounter while using IP phones.
Troubleshooting Methods
IP phones can provide feedback in a variety of forms such as log files, packets, status indicators
and so on, which can help an administrator more easily find the system problem and fix it.
The following are helpful for better understanding and resolving the working status of the IP
phone.

Viewing Log Files

Capturing Packets

Enabling Watch Dog Feature

Getting Information from Status Indicators

Analyzing Configuration File

Exporting All the Diagnostic Files

Ping and Traceroute
Viewing Log Files
If your IP phone encounters some problems, commonly the local log files or syslog files are
needed.
You can configure the phone to log events locally. There are two types of local log files:
<MAC>-boot.log (for example, 0015659188f2-boot.log) and <MAC>-sys.log (for example,
0015659188f2-sys.log). These two local log files can be exported via web user interface
separately. You can configure the IP phone to periodically upload the local log files to the
provisioning server (only support an FTP/TFTP as the provisioning server) or the specific server
(if configured), avoiding the local log loss. You can specify the severity level of the log to be
reported to the <MAC>-sys.log file. The default local log level is 3.
You can also configure the IP phone to send syslog messages to a syslog server in real time. You
can specify the severity level of the syslog to be sent to a syslog server. The default system log
level is 3.