White paper
G900
43
September 2008
Voice over IP, VoIP
G900 comes with enablers for creating a Voice
over IP (VoIP) client. This makes it possible to use
the phone as a complement to, or even as a
replacement for, a fixed phone at home. A Sony
Ericsson partner may develop, market and deliver
VoIP clients using the audio and network enablers
provided in G900. Near-realtime PCM Record &
Play, echo cancellation, and access to audio paths
are a few examples of enablers.
The Sony Ericsson WLAN implementation makes it
possible for a VoIP client to use wideband codecs,
WLAN Powersave for increased standby times, and
WMM for requesting a high Quality of Service
(QoS) level.
If the WLAN signal strength is decreased, the VoIP
client has the opportunity to initiate a Circuit-
switched call in order to maintain an ongoing call.
Several companies offer VoIP clients that can be
used in G900. Uniphone, for example, is the name
of one such client. See Third party application
support on page 70.
Object exchange – 'Send as'
G900 makes it easy to transfer objects via a
Bluetooth connection, or via Messaging. This is
presented to the user via 'Send as' commands in
various applications. The user simply selects an
item, such as a contact, then selects 'Send as' and
chooses the method to be used for the sending. To
beam an appointment to other people, or to receive
a new background image from someone are a few
examples.
• To beam an item over a Bluetooth connection,
scanning is used to find other devices within
range. The user then selects the required device
and sends the information across.
• When sending an item using an SMS, EMS or
MMS message, or an email, the required mes-
sage type is created with the selected object
attached. It is then sent over the air (OTA).
Bearer >
Bluetooth SMS
MMS
Application (Data Type)
Contact (vCard)
OK
OK
OK
OK
Appointment (vCall)
OK
OK
OK
OK
Task (vCall)
OK
OK
OK
OK
Note
OK
OK
OK
OK
Image
OK
–
OK
OK
Sound Clip (Ringtone)
OK
–
OK
OK
Bookmark
OK
OK
OK
OK
Sound recorder (Voice note)
OK
–
OK
OK
Third Party Application
(‘Send as’ API)
OK
–
OK
OK
