Yealink SIP-T54S Administrator's Manual page 998

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/T5 Series/CP860/CP920 IP Phones
sys.log file to 4, then the log with a severity level of 0 to 4 will all be reported.
You can verify whether you got the correct log through the following key fields:
<0+emerg>

<1+alert>

<2+crit>

<3+error>

<4+warnin>

<5+notice>

<6+info>

Syslog
Procedure
Syslog can be configured using the following methods.
Central Provisioning
(Configuration File)
972
Configure syslog feature.
Parameter:
static.syslog.enable
Configures the format type of the log
messages exported to the syslog server.
Parameter:
static.syslog.format_type
Configure syslog server.
Parameters:
static.syslog.server
static.syslog.server_port
<y0000000000xx>.c
Configure the transport protocol that the
fg
IP phone uses to export log to the syslog
server.
Parameter:
static.syslog.transport_type
Configure the lowest severity level of the
logs to be displayed in the syslog.
Parameter:
static.syslog.level
Configure the facility that generates the
log messages.
Parameter: