Zoom 4420-A User Manual

Page of 87
PPTP (VPN only) 
If you select PPTP (Point-to-Point Tunneling Protocol) as your 
WAN Access Type, you see the following parameters: 
 
 
Parameter 
Select or enter . . . 
IP Address 
The static IP address assigned by your Internet 
Service Provider 
Subnet Mask 
The Subnet Mask assigned by your ISP 
Server IP Address  The IP address of your ISP’s PPTP server 
User Name 
The name assigned by your ISP 
Password 
The password assigned by your ISP 
MTU Size 
The size of the Maximum Transmission Unit, 
the largest physical packet size, measured in 
bytes, that a network can transmit. The default 
is 1492 bytes. 
 
Chapter 5. TCP/IP Settings 
 
47