AudioCodes Mediant 800B MSBR User Manual page 331

User's Manual
Parameter
Web: SBC Media Security Behavior
CLI: sbc-media-security-behaviour
[IpProfile_SBCMediaSecurityBehaviour]
Web: RFC 2833 Behavior
CLI: sbc-rfc2833-behavior
[IpProfile_SBCRFC2833Behavior]
Web: Alternative DTMF Method
CLI: sbc-alternative-dtmf-method
[IpProfile_SBCAlternativeDTMFMethod]
Version 6.8
see Restricting Coders on page 513.
Defines the handling of RTP and SRTP for this SIP entity.

[0] As is = (Default) No special handling for RTP\SRTP
is done.

[1] SRTP = SBC legs negotiate only SRTP media lines,
and RTP media lines are removed from the incoming
SDP offer\answer.

[2] RTP = SBC legs negotiate only RTP media lines,
and SRTP media lines are removed from the incoming
offer\answer.

[3] Both = Each offer\answer is extended (if not
already) to two media lines - one RTP and the other
SRTP.
If two SBC legs (after offer\answer negotiation) use
different security types (i.e., one RTP and the other
SRTP), the device performs RTP-SRTP transcoding. To
transcode between RTP and SRTP, the following
prerequisites must be met:

At least one supported SDP "crypto" attribute and
parameters.

EnableMediaSecurity must be set to 1.
If one of the above transcoding prerequisites is not met,
then:

any value other than "As is" is discarded.

if the incoming offer is SRTP, force transcoding, coder
transcoding, and DTMF extensions are not applied.
Defines the handling of RFC 2833 SDP offer-answer
negotiation for this SIP entity.

[0] As is = (Default) The device does not intervene in
the RFC 2833 negotiation.

[1] Extend = Each outgoing offer-answer includes RFC
2833 in the offered SDP. The device adds RFC 2833
only if the incoming offer does not include RFC 2833.

[2] Disallow = The device removes RFC 2833 from the
incoming offer.
Note: If the device interworks between different DTMF
methods and one of the methods is in-band DTMF
packets (RFC 2833), detection and generation of DTMF
methods requires DSP resources.
The device's first priority for DTMF method at each leg is
RFC 2833. Thus, if the device successfully negotiates
RFC 2833 for this SIP entity, the chosen DTMF method
for this leg is RFC 2833. When RFC 2833 negotiation
fails, the device uses this parameter to define the DTMF
method for the leg.

[0] As Is = (Default) The device does not attempt to
interwork any special DTMF method.

[1] In Band

[2] INFO - Cisco

[3] INFO - Nortel

[4] INFO - Lucent = INFO, Korea
331
23. Coders and Profiles
Description
Mediant 800B MSBR