Zoom 4420-A User Manual

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Zoom AP+4 User Guide 

If you select DHCP Client as your WAN Access Type, you see 
the following parameters: 

 

A network name negotiated with the ISP 

The size of the Maximum Transmission Unit, 
the largest physical packet size that a network 
can transmit. The default is 1492 bytes. 

If you select this option, your ISP provider 
assigns a Domain Name Server (DNS), which 
maps the user-friendly domain names (URLs) 
that you type into your web browser (for 
example, www.zoom.com) to the numerical IP 
addresses that are used for Internet routing. 
When you type a URL into your browser, your 
PC sends a request to a DNS server to find the 
equivalent numerical address. 

If you select this option, enter the IP 
address(es) of one or more Domain Name 
Servers in the following text boxes. 
DNS 1: The IP Address of the primary Domain 
Name Server 
DNS 2: The address of an alternate DNS 
server to use in case DNS Server #1 is down 
or very slow 
DNS 3: The address of an alternate DNS 
server to use in case DNS Servers #1 and #2 
are down or very slow 

(Usually optional) Enter the MAC address of a 
device in the LAN network if you want to use 
that address for Internet access instead of the 
AP+4’s MAC address. 

Select this check box to enable Universal Plug 
and Play, which lets LAN devices connect 
automatically to one another. 

Select this check box to allow someone to ping 
the AP+4 over the Internet . This is useful for 
troubleshooting – it can allow a technician to 
remotely ping the AP+4 to see if it is working. 
In normal use, this option should be disabled 
for security reasons.