User's Manual

Available SRTP configurations are provided in the following table.
Table 36: Configuration effects on media security display
Configuration Result Media Security Icon
Display (during active call)
Default: UDP + TCP, no
SRTP
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
SRTP, the connection fails.
Yes
The security icon indicates the security status of a call, and is useful for best-effort
environments where there is a possibility of an unsecured call or where TLS is not used to
communicate with the proxy.
Last successful or unsuccessful logon
You can configure the IP Deskphone to provide the user with logon feedback regarding the
last successful logon or the last unsuccessful logon, and provide the local time at which logon
feedback was logged (assuming that the IP Deskphone has the correct time configured). The
time is correct when the IP Deskphone successfully retrieves the correct time during a
successful logon process, or through the use of SNTP.
Last successful or unsuccessful logon
SIP Software for Avaya 1100 Series IP Deskphones-Administration November 2012 239