AudioCodes Mediant 800 User Manual page 1246

CHAPTER 72 Configuration Parameters Reference
configure voip > sbc settings >
sbc-dtls-mtu
[SbcDtlsMtu]
'ARIA Protocol Support'
configure voip > media security >
ARIA-protocol-support
[AriaProtocolSupport]
'Authentication on Transmitted RTP Packets'
configure voip > media security >
RTP-authentication-disable-tx
[RTPAuthenticationDisableTx]
Parameter
- 1206 -
Mediant 800 Gateway & E-SBC | User's Manual
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.
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.
Enables ARIA algorithm cipher encryption
for SRTP. This is an alternative option to
the existing support for the AES
algorithm. ARIA is a symmetric key block
cipher algorithm standard developed by
the Korean National Security Research
Institute.
■ [0] Disable (default)
■ [1] Enable
Note:
■ To configure the ARIA bit-key
encryption size (128 or 192 bit) with
HMAC SHA-1 cryptographic hash
function, use the SRTPofferedSuites
parameter.
■ The ARIA feature is available only if
the device is installed with a License
Key that includes this feature. For
installing a License Key, see
Key.
Enables authentication on transmitted
RTP packets in a secured RTP session.
■ [0] Enable (default)
■ [1] Disable
License