RealPresence Collaboration Server (RMX) 1500/2000/4000 Administrator’s Guide
23-50
Polycom, Inc.
Alternative Network Address Types (ANAT)
In compliance with
UC_APL_NET_0007
Alternative Network Address Types
(
ANAT
) is
supported.
When the RMX is configured for
IPv4
and
IPv6 Addressing,
the addition of the s
dp-anat option
tag
in the
SIP Require
and
SIP Supported
headers allows a mixture of
IPv4
and
IPv6 addressing
to be specified by the
Session Description Protocol
(
SDP
).
For a full description of
ANAT
see
IETF RFCs 4091
and
4092
.
Guidelines
•
BFCP
over
TCP
is not supported in
Ultra Secure Mode
. It’s associated
Content
channel is
not available.
•
BFCP
over
UDP
is supported in
Ultra Secure Mode
.
•
If the RMX is configured for both
IPv4
and
IPv6
,
IPv4
addressing is given preference
when establishing the connection.
•
If an
Outbound Proxy
is configured, its transport type is used.
•
If an
Outbound Proxy
is not configured, the
SIP Server’s
(
Registrar
) transport type is used.
The
Outbound Proxy
and the
SIP Server
must be configured with one type only either
according to the
IP
address type or according to the
DNS
Resolution
type. However, if
the RMX is configured for
IPv4&IPv6
then the
SIP Contact
field will contain both
IPv4
and
IPv6
addresses.
System Flag
The
ANAT Protocol
selection is controlled by the
ANAT_IP_PROTOCOL
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
.
Table 23-15
ANAT_IP_PROTOCOL 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.
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