Parameter Description
Web: Disable Encryption
On Transmitted RTP
Packets
EMS: RTP
EncryptionDisable Tx
CLI: RTP-encryption-
disable-tx
[RTPEncryptionDisable
Tx]
Enables encryption on transmitted RTP packets in a secured RTP
session.
[0] Enable (default)
[1] Disable
Web: Disable Encryption
On Transmitted RTCP
Packets
EMS: RTCP
EncryptionDisable Tx
CLI: RTCP-encryption-
disable-tx
[RTCPEncryptionDisab
leTx]
Enables encryption on transmitted RTCP packets in a secured RTP
session.
[0] Enable (default)
[1] Disable
CLI: srtp-state-behavior-
mode
[ResetSRTPStateUpon
Rekey]
Enables synchronization of the SRTP state between the device and a
server when a new SRTP key is generated upon a SIP session expire.
This feature ensures that the roll-over counter (ROC), one of the
parameters used in the SRTP encryption/decryption process of the
SRTP packets, is synchronized on both sides for transmit and receive
packets.
[0] = (Default) Disabled. ROC is not reset on the device side.
[1] = Enabled. If the session expires causing a session refresh
through a re-INVITE, the device or server generates a new key and
the device resets the ROC index (and other SRTP fields) as done by
the server, resulting in a synchronized SRTP.
Notes:
This feature can also be configured for an IP Profile.
If this feature is disabled and the server resets the ROC upon a re-
key generation, one-way voice may occur.
66.4.4 TLS Parameters
The Transport Layer Security (TLS) parameters are described in the table below.
TLS Parameters
Parameter Description
Web/EMS: TLS Version
CLI: version
[TLSVersion]
Determines the supported versions of SSL/TLS (Secure Socket
Layer/Transport Layer Security.
[0] SSL 2.0-3.0 and TLS 1.0 = (Default) SSL 2.0, SSL 3.0, and TLS
1.0 are supported.
[1] TLS 1.0 Only = only TLS 1.0 is used.
When set to 0, SSL/TLS handshakes always start with SSL 2.0 and
switch to TLS 1.0 if both peers support it. When set to 1, TLS 1.0 is the
only version supported; clients attempting to contact the device using
SSL 2.0 are rejected.
Note: For this parameter to take effect, a device reset is required.
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