Troubleshooting - Yealink SIP-T48G Administrator's Manual

This chapter provides an administrator with general information for troubleshooting
some common problems that he (or she) may encounter while using IP phones.
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
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Capturing Packets
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Enabling Watch Dog Feature

Getting Information from Status Indicators

Analyzing Configuration File
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If your IP phone encounters some problems, commonly the log files are needed. You can
configure the phone to periodically upload the log files to the provisioning server (only
support an FTP/TFTP as the provisioning server). There are two types of log files on the
provisioning server: <mac>-boot.log (e.g., 001565786fed-boot.log) and <mac>-sys.log
(001565786fed-sys.log). The <mac>-boot.log file is uploaded to the provisioning server
after every boot. The <mac>-sys.log file is uploaded periodically to the provisioning
server. You can export the log files to a syslog server or the local system. You can also
specify the severity level of the log to be reported to a log file. The default system log
level is 3.
In the configuration files, you can use the following parameters to configure system log
settings:
syslog.mode – Specify the system log to be exported to the provisioning server,

syslog server or local system.
syslog.server -- Specify the IP address or domain name of the syslog server to

which the log will be exported.
syslog.log_upload_period - Specify the period of the log upload (in seconds) to the

provisioning server.
syslog.ftp.post_mode - Specify whether the log files on the provisioning server are
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Troubleshooting

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