Logging - IP Stations

This article describes how to enable and collect logs from Vingtor-Stentofon IP Stations. The logs can be useful for debugging and troubleshooting purposes.

The logging feature is implemented somewhat differently in the Turbine family and in the INCA family of stations.

Logging in Turbine stations and ENA Amplifiers

• Log into the IP Station
• Select Station Administration > Logging

Logging configuration in Turbine stations (firmware 4.11)

Basic logging

Basic logging is always active. Press the Download Logs button to download the log files to the computer. The log files are in a compressed archive format with file extension .gz.

Detailed Logging

By enabling Detailed logging much more main application events are logged into log files. This is useful when deep-tracing for events that caused issues or for performance bottlenecks.

• Press Enable to start detailed logging.
• Note that the station will do a partial reboot as soon as the Enable button is pressed, and will be out of service for approx. 30 seconds
• When finished with the logging, press Disable to stop the logging
• Press the Download Logs button to download the log files to the computer. The log files are in a compressed archive format with file extension .gz.

Clear Main Logs/Clear All Logs: After having downloaded the log files, they can be deleted from the station to free up space.

Although the station is using log rotation which automatically deletes old data, it is recommended not to keep the logging permanently enabled, as it will consume memory space and wear out the flash memory

Tcpdump tool

• The Tcpdump tool is included as from firmware version 4.7, and is used for collecting all data traffic in and out from the station for the time period specified
• The log file will be on the format .pcap, which can be read by packet analyzing applications such as Wireshark.
• The Tcpdump timeout period can be set between 10 - 3600 seconds
• To start logging press Start tcpdump. The web page will count down the remaining time for the logging session
• You can stop the logging by pressing Stop tcpdump, or you can wait for the timeout period to expire
• When the logging is ended, you need to refresh the web page (e.g. press the menu "Station Administration" > "Logging"), and you will see a link to download the "tcpdump.pcap" file to your PC
• Maximum file size is 5MB. After having downloaded the file to your PC, you should Delete tcpdump file to free up space in the station memory

Syslog Settings

Syslog destination

Up to 3 different syslog server destinations can be configured, and reporting is done simultaneously for all configured destinations. A syslog destination is configured with following settings:

• Hostname: Remote syslog server IP address
• Port: Default is 514
• Protocol type: UDP (default) or TCP

Syslog facility and Log levels

A syslog facility is basically a source of the logging, or the type of the application (program) that is producing and sending log messages. Facilities are used so that logging servers can handle different facilities in different way. Turbine is using two different facilities:

1. Application log (facility code 0): System level messages, same as "Detailed logging"
2. Intercom log (facility code 1): User-level messages, related to SIP call events

Priority Level is used to filter out log messages by severity level. The following severity levels are used:

• Warning
• Notice
• Info
• Debug

For Intercom log (SIP call events):

• Warning: Registration lost
• Notioce: No answer incoming or outgoing call
• Info: Registration successful

The server process which handles display of messages usually includes all lower (more severe) levels when display of less severe levels is requested. That is, if messages are separated by individual severity, a Warning level entry will also be included when filtering for Notice, Info and Debug messages.

An additional filter field "Contains" can be used to filter out log messages according to a given string input.

Syslog Settings are available as from firmware 4.11

Logging in INCA stations

The INCA Stations provide log information when used in SIP or Pulse mode. When used in AlphaCom mode no log data is available.

• Log into the IP Station
• Select Station Administration > Logging

View log in INCA stations

The web interface will show the last 150 lines of SIP related log data.