Talkswitch 24-CA User Manual page 31

The radio button 'Use the following IP and DNS information' is selected
System IP Settings section
If there is no DHCP server present, the following fields need to be completed
if you plan on using the VoIP capabilities of the TalkSwitch 48-CVA.
Unit n IP Address:
Assign an available static IP address to each TalkSwitch unit, where 'n'
refers to the unit ID (1-4). If you use a DHCP server, you need to reserve
an IP address for each TalkSwitch unit. To reserve an IP address, you need
the MAC address of each unit. See section 2.3.2.1 for details on checking
the MAC address.
Subnet Mask:
Enter the subnet mask for the LAN. If you have a DHCP server running,
this information is obtained automatically.
Default Gateway:
Enter the IP address of the gateway on your network. A gateway is a
hardware device (i. e. router/NAT) that connects the office network to
the Internet. The gateway allows you to share a DSL, cable modem or
other Internet connections with all of the computers and IP devices in
your office network.
T A L K S W I T C H C O N F I G U R A T I O N 2 3