Packet Size; Rtp Encryption - Snom 360 Manual

Settings
Codec 1-7
You can select the preferred order for the potential used codec. The
available options are G.711 ulaw, G.711 alaw, G.722, G.723.1, G.726-
32, GSM and G.729a. Your phone will offer exactly this codec list to the
called party and will receive a selection of this codec list the other party
wants to use for this call.

Packet size

Select the packet size in ms. G.723.1 needs 30 or 60 ms. All other
codecs are working with 20, 40 and 60 ms only.

RTP Encryption

The snom360 is supporting RTP encryption via SRTP. In case you want
to encrypt your outgoing RTP (audio) stream, switch this option to "on".
In case during a call a small lock sign is shown on the display it means a
SRTP encrypted call is currently taking place. Both parties have to
enable the RTP Encryption option to establish a SRTP call.
RTP encryption has nothing to do with SSL/TLS. The keys are sent in
the SDP part of the SIP messages. Certificates are not used for this.
(See also our whitepaper "Providing Security in VoIP Environments"!)
69