Stun Port; Tcp Threshold; Log Level; Log Filename - Snom 4S Administrator's Manual

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If you use a different port, you should make sure that all clients
use that port too. This can be done by appending the port to the URL
explicitly or by using DNS SRV (see below).

STUN port

The proxy includes a STUN server (see below). You need to
specify a port number for the STUN server, the default value is 3478.

TCP threshold

SIP uses both reliable and non-reliable transport layers. The
snom proxy version 2.30 supports UDP and TCP transport layers.
When the proxy needs to send a request, it has to make a decision
which transport layer to use. The TCP threshold value is compared against
the packet length. If it is less that the threshold value, the proxy uses
UDP, otherwise TCP. If you want the proxy to use only UDP, you can enter
a large number here (e.g. 1000000); if you want the proxy to use only
TCP, enter a 1 here.
The recommended value for this field is 1300. Using this
value, a UDP packet can be sent within one Ethernet frame without
fragmentation.

Log Level

The log level defines how many messages get to the log. If you
are only interested in the most important messages, you can set this to 0.
If you want to see any possible log message, set this field to 9.
The log is kept internally within the proxy. After a certain number
of log entries have been reached, the oldest entries are removed from the
log, so that there is no danger of memory overflow from files getting too
large.

Log Filename

If you want to write all log messages to file, you may specify
the file name in this field. However, log files might become very large
overtime and especially when the proxy is running without any problems
over a longer period the file might become too big for the file system
60 • General Setup
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