Administration
A31003-C1000-M101-1-76A9, 03/2016
78
OpenScape Desk Phone CP200/400/600, Administrator Documentation
administration.fm
Security
•
MIKEY
•
SDES (see SDES Configuration)
The
SRTP Type
and
Use SRTCP
options are only available for secure (encrypted) calls, i.e.
these parameters are only enabled if Use secure calls is activated.
When
Use SRTCP
is activated (together with Use secure calls), the phone will use SRTCP (Se-
cure RTCP) to transmit and receive RTP control packets.
Administration via WBM
System > Security > System
Administration via Local Phone
3.5.2
SRTP Configuration
The SDP negotiation parameter specifies whether the use of SRTP will be forced by the phone.
The following choices are available:
•
RTP + SRTP - Both non-encrypted (non-secure) and encrypted (secure) media connec-
tions are offered. Non-encrypted connections are preferred over encrypted connections,
i.e. the phone uses the non-encrypted RTP connection if the remote party accepts it and
only switches to SRTP if RTP is not accepted.
•
With SRTP only, only an encrypted (secure) media connection is allowed; if the remote par-
ty should not support SRTP, no connection will be established.
•
With SRTP + RTP, the phone will try to establish an SRTP connection, but fall back to RTP
if this should fail. This is the recommended option.
>
If SRTP is enabled, ANAT interworking (see Media/SDP) is only possible if SDES is
configured as the key exchange protocol for SRTP.
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--- Security
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--- System
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