Black Box mm146 User Manual page 82

Example 5 - Interfacing with H.320 and H.323
IP Address 192.168.1.1
Subnet Mask 255.255.255.0
Default Gateway 192.168.1.254
192.168.1.254
Hub / Switch
IP Address 192.168.1.2
Subnet Mask 255.255.255.0
Default Gateway 192.168.1.254
Notes: An external IP address and UDP port setting of 5000 is required for each videophone.
You may need to unblock ports, 1718 - 1720, and 5000 - 5010 in the firewall.
Ensure a viable technique is used for signaling between the gateway and the videophone.
80
.
Static NAT entry
Translate
66.77.88.99 to
192.168.1.1
Translate
66.77.88.100 to
192.168.1.2
Router
Firewall
66.77.88.99
66.77.88.10
Gateway
equipment.
Static NAT entry
Translate
99.88.77.66 to
192.168.2.1
Translate
99.88.77.67 to
192.168.2.2
Internet
99.88.77.66
99.88.77.67
ISDN
IP Address
Subnet Mask
Default Gateway 192.168.2.254
Router
192.168.2.254
Firewall
IP Address
Subnet Mask
Default Gateway 192.168.2.254
192.168.2.1
255.255.255.0
Hub / Switch
192.168.2.2
255.255.255.0