ZyXEL Communications PLA-450 User Manual page 65

Table 18 Network > Wireless LAN > QoS: Application Priority Configuration (continued)
LABEL
Service
Dest Port
Priority
Apply
Cancel
PLA-450 User's Guide
DESCRIPTION
The following is a description of the applications you can prioritize with WMM
QoS. Select a service from the drop-down list box.
• E-Mail
Electronic mail consists of messages sent through a computer network to
specific groups or individuals. Here are some default ports for e-mail:
POP3 - port 110
IMAP - port 143
SMTP - port 25
HTTP - port 80
• FTP
File Transfer Protocol enables fast transfer of files, including large files that it
may not be possible to send via e-mail. FTP uses port number 21.
• WWW
The World Wide Web is an Internet system to distribute graphical, hyper-
linked information, based on Hyper Text Transfer Protocol (HTTP) - a client/
server protocol for the World Wide Web. The Web is not synonymous with the
Internet; rather, it is just one service on the Internet. Other services on the
Internet include Internet Relay Chat and Newsgroups. The Web is accessed
through use of a browser.
• User-Defined
User-defined services are user specific services configured using known ports
and applications.
This displays the port the selected service uses. Type a port number in the
field provided if you want to use a different port to the default port.
Select a priority from the drop-down list box.
Highest - Typically used for voice.
High - Typically used for video.
Mid - Typically used for applications that do not fit into another priority. For
example, Internet surfing.
Low - Typically used for non-critical "background" applications, such as large
file transfers and print jobs that should not affect other applications.
Click Apply to save your changes back to the ZyXEL Device.
Click Cancel to return to the previous screen.
Chapter 4 Wireless LAN
65