AudioCodes Mediant 500L MSBR - Page 349

User's Manual 22. Coders and Profiles
Version 6.8 349 Mediant 500L MSBR
Parameter Description
with a SIP 3xx response to a PBX in the LAN in the Contact
header. If the device sends 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.
Web: Remote Multiple 18x
CLI: sbc-rmt-mltple-18x-supp
[IpProfile_SBCRemoteMultiple18xSup
port]
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.
Web: Remote Early Media Response
Type
CLI: sbc-rmt-early-media-resp
[IpProfile_SBCRemoteEarlyMediaRes
ponseType]
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.
Web: Remote Early Media
CLI: sbc-rmt-early-media-supp
Defines whether the remote side can accept early media or