AudioCodes Mediant 4000 SBC - Page 941

CHAPTER60 Configuration Parameters Reference
Mediant 4000 SBC | User's Manual
Parameter Description
■ The parameter also affects the
selection of the crypto in the device's
answer. For example, if the device
receives an offer with two crypto lines
('a=crypto:') containing HMAC_
SHA1_80 and HMAC_SHA_32, it
uses the HMAC_SHA_32 key in its
SIP 200 OK response if the parameter
is configured to AES-CM-128-HMAC-
SHA1-32.
configure voip > sbc settings >
sbc-dtls-mtu
[SbcDtlsMtu]
Defines the maximum transmission unit
(MTU) size for the DTLS handshake. The
device does not attempt to send
handshake packets that are larger than
the configured value. Adjusting the MTU
is useful when there are network
constraints on the size of packets that
can be sent.
The valid value range is 228 to 1500. The
default is 1500.
Note: The parameter is applicable only to
the SBC application.
'Authentication on Transmitted RTP Packets'
configure voip > media security >
RTP-authentication-disable-tx
[RTPAuthenticationDisableTx]
Enables authentication on transmitted
RTP packets in a secured RTP session.
■ [0] Enable (default)
■ [1] Disable
'Encryption on Transmitted RTP Packets'
configure voip > media security >
RTP-encryption-disable-tx
[RTPEncryptionDisableTx]
Enables encryption on transmitted RTP
packets in a secured RTP session.
■ [0] Enable (default)
■ [1] Disable
'Encryption on Transmitted RTCP Packets'
configure voip > media security >
RTCP-encryption-disable-tx
[RTCPEncryptionDisableTx]
Enables encryption on transmitted RTCP
packets in a secured RTP session.
■ [0] Enable (default)
■ [1] Disable
'SRTP Tunneling Authentication for RTP'
configure voip > media security >
srtp-tnl-vld-rtp-auth
[SRTPTunnelingValidateRTPRxAuthentication]
Enables validation of SRTP tunneling
authentication for RTP.
■ [0] Disable = (Default) The device
does not perform any validation and
forwards the packets as is.
■ [1] Enable = The device validates the
packets (e.g., sequence number) and
if successful, forwards the packets. If
validation fails, it drops the packets.
Note:
- 908 -