AudioCodes Mediant 800B MSBR User Manual page 336

Parameter
Web: Remote Multiple 18x
CLI: sbc-rmt-mltple-18x-supp
[IpProfile_SBCRemoteMultiple18xSuppo
rt]
Web: Remote Early Media Response
Type
CLI: sbc-rmt-early-media-resp
[IpProfile_SBCRemoteEarlyMediaRespo
nseType]
Web: Remote Early Media
Mediant 800B MSBR
Description
this response as is (i.e., with the original Contact header),
the FEU is unable to reach the new destination.

[0] Transparent = (Default) The device forwards the
received SIP 3xx response as is, without changing the
Contact header (i.e.,transparent handling).

[1] Database URL = The device changes the Contact
header so that the re-route request is sent through the
device. The device changes the URI in the Contact
header of the received SIP 3xx response to its own
URI and adds a special user prefix ("T~&R_"), which is
then sent to the FEU. The FEU then sends a new
INVITE to the device, which the device then sends to
the correct destination.

[2] Handle Locally = The device handles SIP 3xx
responses on behalf of the dialog-initiating UA and
retries the request (e.g., INVITE) using one or more
alternative URIs included in the 3xx response. The
device sends the new request to the alternative
destination according to the IP-to-IP Routing table (the
'Call Trigger' field must be set to 3xx).
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
336
Mediant 800B MSBR
Document #: LTRT-12813