Nokia E60

Page 61
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Enhanced GPRS (EGPRS) is similar to GPRS, but it enables
faster connection. For more information on the
availability of EGPRS and data transfer speed, contact your
network operator or service provider. Note that when you
have selected GPRS as a data bearer, the device uses EGPRS
instead of GPRS if this is available in the network.
During a voice call, you cannot establish a GPRS
connection, and any existing GPRS connection is put on
hold unless the network supports dual transfer mode.
UMTS
UMTS (universal mobile telecommunications system) is
3G mobile communication system. Besides voice and
data, UMTS enables audio and video delivery to wireless
devices.
Your device can automatically switch between the GSM
and UMTS networks.
To select which network to use, select 
Menu
 > 
Tools
 >
Settings
 > 
Network
 and the network in 
Network mode
.
If you want the device to switch between the networks
automatically, select 
Dual mode
.
The GSM network is indicated with 
, the UMTS network
with 
.
When you use your device in GSM and UMTS networks,
multiple data connections can be active at the same time,
and access points can share a data connection. In the
UMTS network, data connections remain active during
voice calls. You can, for example, surf the Web faster than
previously possible while simultaneously speaking on the
phone.
Wireless local area network (WLAN)
Some places, like France, have restrictions on the use of
wireless LAN. Check with your local authorities for more
information.
Features using wireless LAN, or allowing such features to
run in the background while using other features,
increase the demand on battery power and reduce the
battery life.
This device can detect and connect to a wireless local area
network.
If you move the device to another location within the
wireless LAN and out of range of a wireless LAN access
point, the roaming functionality can automatically
connect your device to another access point that belongs
to the same network. As long as you remain within range
of access points that belong to the same network, your
device can stay connected to the network.
Tip: A wireless LAN connection is established
when you create a data connection using a
wireless LAN Internet access point. The active
wireless LAN connection is ended when you end
the data connection.
Your device enables different types of communication in
a wireless LAN. The two operating modes are
infrastructure and ad hoc.
• The infrastructure operating mode allows two kinds of
communication: wireless devices communicate with
each other through a wireless LAN access point or
wireless devices communicate with a wired LAN device
through a wireless LAN access point. The advantage of
the infrastructure operating mode is that you can have
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