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Push services
These are useful for sending updated WAP site
contents or WAP links to mobile users. Examples
of services that can be implemented using push
services:
• Notification of new voice mails. Instant messag-
ing and chat.
• News, sport results, weather forecasts, financial
information (such as stock quotes).
• Fill up a smart card with e-cash.
• Interactive games, for example, play poker with
a friend.
In the Z300, the user selects whether to allow push
messages or not. There are two different forms of
Push services:
Service Indication (SI)
This is basically a text message to the user con-
taining a link to a URL carried by the SI. If the user
decides to load the suggested URL, normal WAP
browsing commences.
WAP with GPRS
The mobile Internet offers much more than mobile
access to the Internet – it opens up a whole new
range of situation-based services. Services that
give us access to personalized communications,
information and entertainment anytime, anywhere.
With the Z300, the mobile Internet is always with
you. The default address for non-customized prod-
ucts is the address to the Sony Ericsson WAP site.
This address can be changed by the user, who may
also add his or her own bookmarks to favourite
WAP sites. Operators can take advantage of the
Service Loading (SL)
This means that the WAP site content is immedi-
ately loaded and executed on the client, or alterna-
tively is loaded and stored in the cache for later
use. In both cases, the SL is loaded without any
user intervention.
When a service indication is received in the Z300, it
is presented to the user in one of the following
ways:
• High
Immediately displays the message irrespective
of current activity.
• Medium
Message is immediately displayed, unless the
user is engaged in another activity. In this case
the message is indicated to the user, who
retrieves it later from the inbox.
• Low
Message is not immediately displayed. Instead
it is put in the Inbox, and an indication is given
in the standby screen.
In the Z300 push message inbox, a list shows the
first part of each received message, newest first.
The user decides to read or delete the message,
and whether to load the suggested URL in the WAP
browser.
customization possibilities offered by Sony Erics-
son, and have the address of their own WAP site
assigned instead.
18
White Paper
Z300
October 2005
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