Nat Traversal Settings - Bizfon 4000 Administrator's Manual

Bizfon Manual II: Administrator's Guide
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NAT Traversal Settings

The NAT Traversal Settings page is divided into separate pages used to configure General NAT settings, SIP NAT parameters, RTP and STUN
parameters for NAT and a page where the NAT Exclusion table may be filled.
The General Settings page consists of a manipulation radio
buttons group to select the mode of the NAT Traversal usage for
the SIP traffic (any incoming and outgoing SIP messages from
and to the Bizfon will be routed through the NAT PC).
•
Automatic – with this selection, system will analize the
Bizfon's WAN IP address and if it is in the IP range
specified for local networks (according to RFC), the SIP
traffic will be parsed over NAT, otherwise, if Bizfon's WAN
IP address is outside the specified IP range, no SIP traffic
will be routed through NAT server.
•
Force – with this selection, all SIP traffic will be routed
through NAT server.
•
Disable – with this selection, no SIP traffic will be routed
through NAT server.
The SIP Parameters page is used to configure NAT specific
settings for SIP. and offers two independent group of settings:
UDP Parameters:
Manipulation radio buttons allow to select the type of connection
over NAT:
Selecting Use STUN will switch to automatic discovery of
Mapped settings for the SIP UDP traffic over NAT. STUN
settings are configured on the STUN parameters page (see
below).
Selecting Use Manual NAT Traversal allows to define
manually the mapped settings for the SIP UDP traffic over
NAT:
Mapped Host requires the IP address of the mapped host for
SIP UDP traffic over NAT.
Mapped Port requires the port number on the mapped host
for the SIP UDP traffic over NAT.
TCP Parameters:
Mapped Host requires the IP address of the mapped host for
SIP TCP traffic over NAT.
Mapped Port requires the port number on the mapped host
for the SIP TCP traffic over NAT.
The RTP Parameters page is used to choose between the
STUN and Manual NAT traversal connection for the RTP traffic
and to define the RTP/RTCP ports for the connection over NAT.
Manipulation radio buttons allow to select the type of connection
over NAT:
Selecting Use STUN will switch to automatic discovery of
Mapped settings for the RTP UDP traffic over NAT.
settings are configured on the STUN Parameters page (see
below).
Selecting Use Manual NAT Traversal allows to define manually
the RTP/RTCP port ranges for the RTP traffic over NAT:
•
The Mapped Host text fields require the Mapped Host for
RTP traffic over NAT.
•
Mapped RTP/RTCP Port Range for FXS Lines and
Mapped RTP/RTCP Port Range for IP Lines:
•
Min - minimal port has to be higher than 1024 and lower
than the maximal port range. Only even numbers are
Bizfon4000 (SW Version 3.1.x)
STUN
Administrator's Menus
Fig. II-86: General NAT traversal page
Fig. II-87: SIP Parameters page
Fig. II-88: RTP Parameters page
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