User's Manual

Chapter 23 - Ultra Secure Mode
Polycom, Inc. 23-49
System Flag
The ANAT Protocol selection is controlled by the ANAT_IP_PROTOCOL_SETTING System
Flag. To modify it, manually add it to system.cfg and set its value as described in Table 23-15.
Range: DISABLED, AUTO, PREFER_IPv4, PREFER_IPv6
Default:
— If the ULTRA_SECURE_MODE System Flag is set to NO: DISABLED.
— If the ULTRA_SECURE_MODE System Flag is set to YES: AUTO.
BFCP Over UDP – AS-SIP Content
In compliance with UCR 2008 Change 3, AS-SIP (Assured Services-Session Initiation Protocol)
Content flow is an implementation of SIP that utilizes SIP’s built in security features.
When using AS-SIP Content, the media line of the content channel is not sent as part of the
initial SDP Offer/Answer message sequence. The media line of the Content channel is only sent
to the MCU when an endpoint wanting to share Content initiates Content sharing. The
Collaboration Server (RMX) then sends the Content media line to all conference participants
using an SDP Re-invite.
Guidelines
• AS-SIP Content is shared using Multiple Resolutions (Content Transcoding) and is not
supported in any other Content sharing mode such as H.263 Content and H.264 Cascade
and SVC Optimized Content Protocol.
• Multiple Resolutions consumes system video resources. If sufficient system video
resources are not available, a conference with AS-SIP Content enabled in its Profile, will
not be created. An error: Conference could not be created due to lack of Content DSP
resources, is displayed.
•The SIP BFCP UDP application line is included in SDP Offer/Answer message sequence.
Table 23-15 ANAT_IP_PROTOCOL_SETTING System Flag Values for Dial in Dial out
Value Behavior - Dial in and Dial out
DISABLED sdp-anat does not appear in SIP headers and the SDP does not contain a
mixture of IPv4 and IPv6.
If an endpoint requests ANAT (sends the Require: sdp-anat tag) the RMX will
accept the call.
AUTO sdp-anat appears in SIP headers.
Dial in: The IP Version preference is according to the SDP priority.
Dial out: IPv4 is advertised first.
PREFER_IPv4 sdp-anat appears in SIP headers.
Dial in: IPv4 is the IP Version preference.
Dial out: IPv4 is advertised first.
PREFER_IPv6 sdp-anat appears in SIP headers.
Dial in: IPv6 is the IP Version preference
Dial out: IPv6 is advertised first.