ZyXEL Communications 802.11g Wireless ADSL2+ 4-port VoIP IAD P-2602HWNLI User Manual
Page 42
P-2602HWNLI User’s Guide
42
Chapter 1 Getting To Know the ZyXEL Device
4-port Switch
A combination of switch and router makes your ZyXEL Device a cost-effective and viable
network solution. You can connect up to four computers to the ZyXEL Device without the cost
of a hub. Use a hub to add more than four computers to your LAN.
Network Address Translation (NAT)
Network Address Translation (NAT) allows the translation of an Internet protocol address
used within one network (for example a private IP address used in a local network) to a
different IP address known within another network (for example a public IP address used on
the Internet).
Content Filtering
Content filtering allows you to block access to Internet web sites that contain key words (that
you specify) in the URL. You can also schedule when to perform the filtering and give trusted
LAN IP addresses unfiltered Internet access.
Media Bandwidth Management
Media Bandwidth Management allows you to specify bandwidth classes based on an
application and/or subnet. You can allocate specific amounts of bandwidth capacity
(bandwidth budgets) to different bandwidth classes.
REN
A Ringer Equivalence Number (REN) is used to determine the number of devices (like
telephones or fax machines) that may be connected to the telephone line. Your device has a
REN of three, so it can support three devices per telephone port.
Virtual Private Networks (VPN)
The ZyXEL Device allows companies to establish VPN connections with business partners, as
well as with remote and branch offices. VPN uses data encryption and the Internet to provide
transparent, secure communications between two or more sites without the expense of leased
site-to-site lines. Moreover, using VPN, telecommuters and home workers can access data
more easily and safely at home.
The ZyXEL Device VPN is based on the IPSec standard and is fully interoperable with other
IPSec-based VPN products.
Dynamic Jitter Buffer
The built-in adaptive buffer helps to smooth out the variations in delay (jitter) for voice traffic.
This helps ensure good voice quality for your conversations.