Command with FXS Gateway
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assigned a virtual fixed IP Address such as 192.168.1.5, IP Sharing device must
forward the VoIP message to 192.168.1.5.
Important Notes:
For some IP-Sharing devices do not support DMZ or virtual server function, but
allowed user to allocate some particular TCP/UDP port range.
While a complete H.323 communication is established, the following ports are
possibly to be used:
TCP port:
Q.931/H.225 1720
H.245 Dynamic,
But range 1025 ~ 1029 (not in use if Fast Start or Tunnel
mode is activated)
UDP port:
RAS Device: 1024,
Gatekeeper: 1719
RTP/RTCP Adjustable,
Default: 16384 ~ (16384 + 4*Line Numbers)