User's Manual

Available SRTP configurations are provided in the following table.
T
able 35: Configuration effects on media security display
Configuration Result Media Security Icon
Display (during active call)
Default: UDP + TCP, no
SR
TP
SIP is unsecured; media is
unsecured.
No
UDP + TCP. Best-Effort
SRTP
SIP is unsecured; media is
encrypted, but due to
transmission of crypto
parameters in clear text, the
media cannot be considered
secure.
No
UDP + TCP, SRTP-Only SIP is unsecured; media is
encrypted, but due to
transmission of crypto
parameters in clear text, the
media cannot be considered
secure.
No
TLS, no SRTP SIP is secured; media is
unencrypted.
No
TLS, Best-effort SIP is unsecured; media is
encrypted only if both end-
points agree on use of
SRTP.
Yes/No, depending on
negotiation
TLS, SRTP Only SIP is secured, media is
encrypted. If both end-points
do not agree on the use of
SR
TP, the connection fails.
Yes
Security
218 SIP Software for Avaya 1100 Series IP Deskphones-Administration November 2012
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