AudioCodes Mediant 500 E-SBC User Manual page 319

User's Manual
Parameter
Web: Remote Multiple 18x
CLI: sbc-rmt-mltple-18x-supp
[IpProfile_SBCRemoteMultiple18xSup
port]
Web: Remote Early Media Response
Type
CLI: sbc-rmt-early-media-resp
[IpProfile_SBCRemoteEarlyMediaRes
ponseType]
Web: Remote Early Media
CLI: sbc-rmt-early-media-supp
[IpProfile_SBCRemoteEarlyMediaSup
port]
Web: Enforce MKI Size
CLI: sbc-enforce-mki-size
[IpProfile_SBCEnforceMKISize]
Web: Remote Early Media RTP
Behavior
CLI: sbc-rmt-early-media-rtp
[IpProfile_SBCRemoteEarlyMediaRTP
]
Version 6.8
Notes:

When this parameter is changed from 1 to 0, new 3xx
Contact headers remain unchanged. However, requests
with the special prefix continue using the device's
database to locate the new destination.

Only one database entry is supported for the same host,
port, and transport combination. For example, the
following URLs cannot be distinguished by the device:

sip:10.10.10.10:5060;transport=tcp;param=a

sip:10.10.10.10:5060;transport=tcp;param=b

The database entry expires two hours after the last use.

The maximum number of destinations (i.e., database
entries) is 50.

The corresponding global parameter is SBC3xxBehavior.
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 this
SIP entity.

[0] Not Supported = Only the first 18x response is
forwarded to the caller.

[1] Supported = (Default) Multiple 18x responses are
forwarded to the caller.
Defines the SIP provisional response type - 180 or 183 - for
forwarding early media to the caller, for this SIP entity.

[0] Transparent = (Default) All early media response
types are supported; the device forwards all responses as
is (unchanged).

[1] 180 = Early media is sent as 180 response only.

[2] 183 = Early media is sent as 183 response only.
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.
Enables MKI length negotiation for SRTP-to-SRTP flows
between SIP networks (i.e., IP Groups). This includes the
capability of modifying the MKI length on the inbound or
outbound SBC call leg for this SIP entity.

[0] Don't enforce = (Default) Device forwards the MKI
size as is.

[1] Enforce = Device changes the MKI length according
to the settings of the IP Profile parameter, MKISize.
Defines whether the destination UA sends RTP immediately
after it sends 18x response.

[0] Immediate = (Default) Remote client sends RTP
immediately after it sends 18x response with early media.
Device forwards 18x and RTP as is.

[1] Delayed = After sending 18x response, the remote
client waits before sending RTP (e.g., Microsoft Lync
environment). For the device's handling of this remote UA
support, see Interworking SIP Early Media on page 453.
319
19. Coders and Profiles
Description
Mediant 500 E-SBC