ZyXEL Communications NBG4115 Manual Do Utilizador

Chapter 16 Bandwidth Management

User’s Guide

 for commonly used services and port numbers.

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

SMTP - port 25

VoIP (SIP)

Sending voice signals over the Internet is called Voice over IP or VoIP. 
Session Initiated Protocol  (SIP) is an internationally recognized 
standard for implementing VoIP. SIP is an application-layer control 
(signaling) protocol that handles the setting up, altering and tearing 
down of voice and multimedia sessions over the Internet.

SIP is transported primarily over UDP but can also be transported over 
TCP, using the default port number 5060. 

BitTorrent

BitTorrent is a free P2P (peer-to-peer) sharing tool allowing you to 
distribute large software and media files using ports 6881 to 6889. 
BitTorrent requires you to search for a file with a searching engine 
yourself. It distributes files by corporation and trading, that is, the client 
downloads the file in small pieces and share the pieces with other peers 
to get other half of the file.

Gaming

Online gaming services lets you play multiplayer games on the Internet 
via broadband technology. One example is Microsoft’s Xbox Live, which 
uses port 3074. As of this writing, your NBG4115 supports Xbox, 
Playstation, Battlenet and MSN Game Zone.

Table 59   Media Bandwidth Management Setup: Services (continued)