AudioCodes Mediant 500 MSBR, Руководство пользователя

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User's Manual 406 Document #: LTRT-10375
Mediant 500 MSBR
Parameter Description
profile-name
[IpProfile_ProfileName]
row in other tables.
The valid value is a string of up to 40 characters.
Media Security
SBC Media Security Mode
sbc-media-security-behaviour
[IpProfile_SBCMediaSecurityBeh
aviour]
Defines the handling of RTP and SRTP for the SIP entity
associated with the IP Profile.

[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.
Gateway Media Security Mode
media-security-behaviour
[IpProfile_MediaSecurityBehavio
ur]
Defines the handling of SRTP for the SIP entity associated with
the IP Profile.

[-1] Not Configured = Applies the settings of the
corresponding global parameter, MediaSecurityBehaviour.

[0] Preferable = (Default) The device initiates encrypted calls
to this SIP entity. However, if negotiation of the cipher suite
fails, an unencrypted call is established. The device accepts
incoming calls received from the SIP entity that don't include
encryption information.

[1] Mandatory = The device initiates encrypted calls to this
SIP entity, but if negotiation of the cipher suite fails, the call is
terminated. The device rejects incoming calls received from
the SIP entity that don't include encryption information.

[2] Disable = This SIP entity does not support encrypted calls
(i.e., SRTP).

[3] Preferable - Single Media = The device sends SDP with a
single media ('m=') line only (e.g., m=audio 6000 RTP/AVP 4
0 70 96) with RTP/AVP and crypto keys. The SIP entity can
respond with SRTP or RTP parameters:

If the SIP entity does not support SRTP, it uses RTP and
ignores the crypto lines.

If the device receives an SDP offer with a single media
(as shown above) from the SIP entity, it responds with
SRTP (RTP/SAVP) if the EnableMediaSecurity
parameter is set to 1. If SRTP is not supported (i.e.,