IPX-100 system installation & configuration
Page-37
TELECOMMUNICATIONS
Can Re-Invite(directmedia) Whether to allow Re-Invite actions to redirect media streaming
(directly transmitted by the terminal device peer-to-peer).
No
Not allowed (system default).
Yes
Allow, will attempt to redirect the RTP media stream,
directly from the caller to the callee.
No NAT
Another option is to allow media path redirection
(reinvite), but only if the peer that knows the sending
media is not behind the NAT.
Update
Use UPDATE for media path redirection instead of
INVITE.
Outgoing Allowed, but only when the calling party initiates a call,
the called end does not allow it.
Note: By default, the PBX program will attempt to re-invite the
media stream to the best path. If the PBX program has no
reason to stay in the media path, the media will be redirected.
In the case where the PBX program is on the external
network and the client is inside the NAT, this does not
actually work well. In this case, you want to set it to nonat. In
addition, please choose carefully, because if the media
stream is not transferred by the PBX program, the call
recording and call transfer functions will be invalid.
Refresh Interval
Change the refresh interval time for the system to periodically
update the corresponding IP address of the "externally visible"
domain name.
Externally Visible IP Address Declare to fill in the static IP address used in SIP and SDP
messages, and the "external visible" address (and port) to be
used when communicating with devices outside the NAT, so that
the external device transmits the packet to this address, and then
forwards it to NAT. IPX-100 located on the intranet.
Externally Visible Host Name The "external visible" domain name (and port) to be used when
communicating with devices outside the NAT, the IPX-100 will look for
the corresponding network IP address once at a fixed interval (change
the refresh interval time setting).
Note: that you may experience a
service outage issue when the name server resolution fails.
Localnet/Submask
Declare domains and subnet masks that belong to the internal
network.
Localnet/Submask example
：
172.16.0.0/12
Another RFC1918 address notation, using Classless Inter-Domain
Routing (CIDR) notation.
