Port Forwarding; Table 9: Ucm6510 System Settings  Network SettingsPort Forwarding; Figure 18: Ucm6510 Static Route Configuration - Grandstream Networks UCM6510 User Manual

In this network, by default the IP phones in network 192.168.69.0 are unable to call IP phones in network
192.168.66.0 when registered on different interfaces on the UCM6510. Therefore, we need configure a
static route on the UCM6510 so that the phones in isolated networks can make calls between each other.

Port Forwarding

The UCM network interface supports router functionality that allows users to configure port forwarding. If
the UCM is set to "Route" in System SettingsNetwork SettingsBasic SettingsMethod, the Port
Forwarding tab will be available.
Table 9: UCM6510 System Settings  Network SettingsPort Forwarding
Specify the WAN port number or a range of WAN ports. Unlimited number of ports
can be configured.
Note:
WAN Port
When set to a range, both the WAN port and LAN port must be configured with the
same range (e.g., WAN port: 1000-1005, LAN port: 1000-1005). Access from the
WAN port will be forwarded to the LAN port with the same port number.
LAN IP Specify the LAN IP address.
Specify the LAN port number or a range of LAN ports.
LAN Port
Please see the note for WAN Port" instead of repeating the note.
Select protocol type "UDP Only", "TCP Only" or "TCP/UDP" for the forwarding in the
Protocol Type
selected port. The default setting is "UDP Only".

Figure 18: UCM6510 Static Route Configuration

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