AudioCodes E-SBC User Manual page 438

CHAPTER 19 Coders and Profiles
Parameter
'SBC Remove Crypto Lifetime
in SDP'
sbc-sdp-remove-crypto-
lifetime
[IpProfile_
SBCRemoveCryptoLifetimeInS
DP]
'SBC Remove Unknown Crypto'
sbc-remove-unknown-
crypto
[IpProfile_
SBCRemoveUnKnownCrypto]
SBC Early Media
'Remote Early Media'
sbc-rmt-early-media-
supp
[IpProfile_
SBCRemoteEarlyMediaSuppor
t]
'Remote Multiple 18x'
sbc-rmt-mltple-18x-supp
[IpProfile_
SBCRemoteMultiple18xSuppor
t]
Mediant 1000 Gateway & E-SBC | User's Manual
Description
Defines the handling of the lifetime field in the 'a=crypto'
attribute of the SDP for the SIP entity associated with the
IP Profile. The SDP field defines the lifetime of the master
key as measured in maximum number of SRTP or SRTCP
packets using the master key.
■ [0] No = (Default) The device retains the lifetime field (if
present) in the SDP.
■ [1] Yes = The device removes the lifetime field from the
'a=crypto' attribute.
Note: If you configure the parameter to Yes, the following
IP Profile parameters must be configured as follows:
■ IpProfile_EnableSymmetricMKI configured to Enable
[1].
■ IpProfile_MKISize configured to 0.
■ IpProfile_SBCEnforceMKISize configured to Enforce
[1].
Defines whether the device keeps or removes unknown
cryptographic suites (encryption and authentication
algorithms) that are present in the SDP 'a=crypto' attribute
in the incoming SIP message, before forwarding the
message to the SIP entity associated with this IP Profile.
■ [0] No = (Default) The device keeps all unknown
cryptographic suites that are in the SDP's 'a=crypto'
attribute.
■ [1] Yes = The device removes all unknown
cryptographic suites that are in the SDP's 'a=crypto'
attribute.
Note:
■ The feature is applicable only to SRTP-to-SRTP calls
and calls that do not require transcoding.
■ The parameter is applicable only to the SBC
application.
Defines whether the remote side can accept early media or
not.
■ [0] Not Supported = Early media is not supported.
■ [1] Supported = (Default) Early media is supported.
Defines whether multiple 18x responses including 180
Ringing, 181 Call is Being Forwarded, 182 Call Queued,
and 183 Session Progress are forwarded to the caller, for
the SIP entity associated with the IP Profile.
■ [0] Not Supported = Only the first 18x response is
forwarded to the caller.
- 400 -