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White Paper T610/612
29
Infrared transceiver
Infrared communication creates a data link between two
communications devices through an infrared beam of
light. On the T610/612, this link is used to connect with
desktop computers, PDAs, Sony Ericsson handheld
computers, laptop PCs, other phones and other hardware
supporting the standard. The Infrared Data Association
(IrDA) has set the hardware and software standards that
form the infrared communication links. The T610/612
complies with the IrMC 1.1 specification, which defines
how mobile telephony and communication devices can
exchange information. In the T610/612, the IrMC 1.1
specification is also used for communication via a cable.
Key benefits of using the T610/612 with its built-in
infrared transceiver:
• True wireless communication
• Low power consumption
• Secure data transmission with the IrDA DATA stan-
dard
• Ability to send and receive e-mail and data on the
connected PC/PDA
• Ability to connect to the Internet or intranet/LAN
from the connected PC/PDA
• Ability to manage the phone book from a PC
• Exchange of business cards and calendar events with
vCard/vCalendar compatible devices
• Exchange of ring signals between compatible phones
• Ability to attach a photo from a digital camera in out-
going e-mail
Connection via infrared
IrDA is a point-to-point communication link between
two infrared ports. 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
exchange data. For optimal performance, place the T610/
T612 within a metre and at an angle of 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 the
connection is not affected by fluorescent light, sunlight
and electromagnetic fields – making it suitable for the
modern office environment.
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 DRS-11 cable provides the same
connectivity between the phone and another unit.
The DRS-11 cable supports a subset of the signals in the
RS-232 standard.
Chinese versions
This mobile phone comes in two different Chinese
versions, the T610 for Hong Kong, Singapore, Malaysia
and Taiwan, and the T612 for mainland China. The only
difference between these Chinese versions is that they
support different languages and input methods.
Both versions contain a Lunar calendar.
Both versions also support the predictive text input
method T9™ Text Input. Predictive text input makes it
fast and easy to write text messages. It works by search-
ing a word database to anticipate which word you are
writing. You only have to press each key once, even if
the letter you want is not the first letter on the key.