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White Paper K300i
22 February 2005
Infrared communication
Infrared communication is a point-to-point
communication link between two infrared ports.
This link is based on a standard provided by IrDA
(Infrared Data Association). The infrared beam has
to be directed towards the target infrared port and
as long as the two infrared ports are within sight
and range, the devices can exchange data. For
optimal performance, place the phone within 20
centimetres and at an angle of up to 30 degrees to
the infrared port on the PC/PDA, or other phone.
An advantage of the necessary proximity of
devices is reduced risk of transmitting data to other
nearby devices.
An infrared link is a serial connection, which means
that data bits are sent one after another in a long
stream. The IrDA–SIR Data Link Standard is a
protocol that makes transmission of data faultless.
The standard provides a high level of noise
immunity, which means that (under normal
conditions) the connection is not affected by
fluorescent light, sunlight and electromagnetic
fields– making it suitable for the modern office
environment.
Object Exchange via infrared (IrObex) supports
transferring objects between compatible phones.
These objects are not only limited to ringtones, but
even pictures, bookmarks and other files in the file
system.
Key benefits of using the phone with its built-in
infrared transceiver:
• True wireless communication
• Low power consumption
• Secure data transmission with the IrDA DATA
standard
• Ability to send and receive e-mail and data on
the connected PC/PDA
• Ability to connect to the Internet from the con-
nected PC/PDA
• Ability to synchronize the phone book from a PC
• Exchange of business cards and calendar
events with vCard/vCalendar compatible
devices
• Exchange of ringtones and other files between
compatible phones
• Ability to attach a photo from a digital camera in
outgoing e-mail
• Ability to send and exchange notes with vNote
compability devices
Connection via cable
The infrared connection is not always the best
solution when connecting to a PC/PDA. Indeed, it
is not always even possible. The separate
accessories the DRS-11 cable or the deskspeaker
stand CSS-25 provide connectivity between the
phone and a PC with serial port (RS-232).
The DRS-11 and the CSS-25 support a subset of
the signals in the RS-232 standard.
Synchronization and data transfer
In everyday life, access to an updated calendar,
notes and details of friends and business
colleagues is greatly appreciated. To be truly
mobile, users must be able to carry their important
information with them. Equipping mobile phones
with Personal Information Manager (PIM) programs
such as calendars, task lists and address books
gives users access to their most important data
anywhere and anytime. The information is kept
updated by synchronizing with the information at
the office or at home. The growing use of
groupware such as Microsoft® Outlook® means
that more and more meetings are booked
electronically in daily business life.
The phone uses the SyncML 1.1 protocol for
synchronization. This means that it has
compatibility to synchronize with a wide variety of
devices over a number of different communications
media.