3Com VCX V7122 SIP User Manual page 168

Add Reserved Clients
Figure 67
Enter the IP address you want to provide to the 3Com Gateway.
3
The IP address reservation should be inside your DHCP scope.
4
Enter the hardware MAC address, 12 digits, from your 3Com Gateway.
5
Enter Client name; it can be any free text.
6
Select Add and then Close.
7
From Scope menu in the main screen, select Active Leases.
8
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3Com VCX V7122/SIP VoIP Gateway User Manual