Snom ONE IP Technical Manual page 84

Deploying the snom ONE IP Telephone System
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When the system receives or sends a SIP packet, it determines whether the packet will
be logged and which log level the event will have.
•
Log REGISTER: REGISTER packets deal with the registration of extensions
or trunks, which can generate a lot of traffic. If you are not interested in the
registration traffic, disable this setting (see Appendix B for more information
on SIP messages).
•
Log SUBSCRIBE/NOTIFY: SUBSCRIBE/NOTIFY deals with message
waiting indications (MWIs), the LED state, and other used subscriptions.
•
Log OPTIONS: OPTIONS can be used to keep the SIP connection alive.
They are designed so that a user agent can see which options or methods the
other user agent supplies. OPTIONS allow you to view the full SIP messages
with all the SIP header information (when using log level 7).
•
Log Other Messages (e.g., INVITE): All other packets usually belong to an
ongoing call (e.g., INVITE, CANCEL, ACK, BYE).
When you enable the logging for one of the previous categories, the SIP packets will be
logged on log level 7. If your log level is below 7, the packets won't show up in your log.
•
Log Watch List (IP): The watch list filters the SIP packets by IP address. This
feature is useful when you have a specific device that you want to watch in the
system's log. Enter the IP addresses into this field.
•
Log Watch List: This setting defines the log level for the previous setting—
Log Watch List (IP). The log level for the watch list is independent of the log
level of the packets that are not on the list (and which are on level 7). This
makes is possible to lower the log level and show the SIP packets of a specific
device also on a lower log level.
Example: If you want to log SIP messages from 192.168.1.113 only, configure
the following settings:
— Log Watch List(IP): Set the IP address (e.g., 192.168.1.113).
— Log watch list: 7
— Log Level: 8
— Specific Events: Enable Log SIP events. This filters out all the events,
since they are set at 8 and log watch is set at 7.
Turn off everything under SIP Logging.