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Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide for MGCP (version 3.0)
OL-4803-01
Chapter 8 Troubleshooting
Using System Diagnostics
Using System Diagnostics
The Cisco ATA uses functionality of the syslog protocol for system diagnostics. For detailed
information on syslog, see RFC-3164.
Note Because the Cisco ATA does not have an internal clock, syslog messages provide the time offset from
the most recent Cisco ATA reset. The system administrator should make sure that the syslog relay or
syslog server adds the local timestamps upon receiving syslog messages.
Message Syntax
<Priority>Time_Offset ATA_IP [tag] : [ch]Message
Syntax Definitions
• Priority means the facility and severity values for a specific syslog message.
Priority = (facility value) * 8 + (severity value). Facility and severity definitions and values are
supplied in RFC-3164; these values can be calculated if you know the priority value.
• Time_offset means the time elapsed since the most recent Cisco ATA reset.
If the time offset is less than 24 hours, this value is shown as:
hh:mm:ss
If the time offset is more than 24 hours, this value is shown as:
dd hh:mm:ss
where the first d is the number of days elapsed since the most recent reset, and the second d is the letter
d.
• ATA_IP means the IP address of ATA.
• tag means the tag number of the syslog message. Each tag number corresponds to a particular type
of message, such as an ARP message. You can turn on tracing for each type of message you want
captured by configuring the Cisco ATA parameter syslogCtrl. For more information about the
syslogCtrl parameter and for a complete listing of tag numbers and their corresponding message
types, see the “SyslogCtrl” section on page 5-42.
Syslog information is sent to the syslog server that you configure by means of the Cisco ATA
syslogIP parameter. For more information, see the “SyslogIP” section on page 5-41.
• ch means the active line of the Cisco ATA.
System-level messages do not contain a ch field.
• Message means the syslog message. (See RFC-3164 for message formats and how to interpret the
meaning of each syslog message.)