AudioCodes Mediant 800B MSBR User Manual page 266

Parameter
Media Anchoring
CLI: intra-srd-media-anchoring
[SRD_IntraSRDMediaAnchoring]
Block Unregistered Users
CLI: block-un-reg-users
[SRD_BlockUnRegUsers]
Max. Number of Registered Users
CLI: max-reg-users
[SRD_MaxNumOfRegUsers]
Enable Un-Authenticated Registrations
CLI: enable-un-auth-registrs
[SRD_EnableUnAuthenticatedRegistrations]
User's Manual
Description
Enables the Media Anchoring feature (Anti-
Tromboning) per SRD, whereby RTP (media) flows
directly between the call parties (i.e., does not traverse
the device).

[0] Enable = (Default) RTP traverses the device and
each leg uses a different coder or coder
parameters.

[1] Disable = The RTP packet flow does not traverse
the device; instead, the two SIP UAs establish a
direct RTP/SRTP (media) flow between one
another.
Notes:

If this parameter is enabled and the two call
endpoints belong to the same SRD, calls cannot be
established if the following scenario exists:
a. One of the endpoints is defined as a foreign
user (for example, "follow me service")
b. and one endpoint is located on the WAN and
the other on the LAN.
The reason for this is that in Media Anchoring, the
device does not interfere in the SIP signaling such
as manipulation of IP addresses, which is necessary
for calls between LAN and WAN.

When the global parameter SBCDirectMedia is
disabled, Media Anchoring can only be enabled for
calls between endpoints belonging to the same
SRD.

For more information on Media Anchoring, see No
Media Anchoring (Anti-Tromboning) on page 511.
Determines whether the device blocks (rejects)
incoming calls (INVITE requests) from unregistered
users (pertaining to User-type IP Groups) for the SRD.

[0] No = Calls from unregistered users are not
blocked (default).

[1] Yes = Blocks calls from unregistered users.
Note: When the call is blocked, the device sends a SIP
500 "Server Internal Error" response to the remote end.
Maximum number of users belonging to this SRD that
can register with the device. By default, no limitation
exists for registered users
Determines whether the device blocks REGISTER
requests from new users (i.e., users not registered in
the device's registration database) when the
destination is a User-type IP Group.

[0] No = The device sends REGISTER requests to
the SIP proxy server and only if authenticated by
the server does the device add the user registration
to its database.

[1] Yes = The device adds REGISTER requests to
its database even if the requests are not
authenticated by a SIP proxy (default).
266
Mediant 800B MSBR
Document #: LTRT-12813