ZyXEL Communications ZyXEL ZyWALL 2WG - Manual (Page 153)

Chapter 8 WAN Screens
ZyWALL 2WG User’s Guide
153
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The 3G downstream data rate can be up to 900 Kbps and upstream data rate
can be up to 384 Kbps when you use the Sierra AC850/860 3G card in the
ZyWALL.
The actual data rate you obtain varies depending the 3G card you use, the
signal strength to the service provider’s base station, etc.
If the signal strength of a 3G network is too low, the 3G card may switch to an available 2.5G
or 2.75G network. See the following table for a comparison between 2G, 2.5G, 2.75G and 3G
of wireless technologies.
After you insert a 3G card in the ZyWALL, the 3G connection becomes WAN 2.
To change your ZyWALL's 3G WAN settings, click NETWORK > WAN > WAN 2.
"
Turn the ZyWALL off before you install or remove the 3G card.
Table 42 2G, 2.5G, 2.75G and 3G of Wireless Technologies
NAME
OFFICIALLY
DEFINED BY
ITU A
A. The International Telecommunication Union (ITU) is an international organization within which governments and
the private sector coordinate global telecom networks and services.
TYPE
MOBILE PHONE AND DATA
STANDARDS
DATA
SPEED
2G Yes Circuit-switched GSM (Global System for Mobile
Communications), Personal Handy-
phone System (PHS), etc.
Slow
Fast
2.5G No Packet-switched GPRS (General Packet Radio Services),
High-Speed Circuit-Switched Data
(HSCSD), etc.
2.75G No Packet-switched Enhanced Data rates for GSM Evolution
(EDGE), Enhanced GPRS (EGPRS), etc.
3G Yes Packet-switched W-CDMA (Wideband Code Division
Multiple Access), the higher speed
transmission protocol used in the
Japanese FOMA (Freedom of Mobile
Multimedia Access) system and in the
UMTS (Universal Mobile
Telecommunications System) system,
CDMA2000, etc.
HSDPA (High-Speed Downlink Packet
Access) is a mobile telephony protocol,
used for UMTS-based 3G networks and
allows for higher data transfer speeds.