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-->  <!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd"><concept id="GUID-9D6E0EB4-CBF8-48BC-A76F-FE6366D4D96E" xml:lang="en"><title>Downloading</title><prolog><metadata><keywords></keywords></metadata></prolog><conbody>

<p>You can use the Download Manager Client

API to create and manage a session in which files are downloaded

over HTTP or HTTPS. </p>

<p>The DRM

APIs provided by the multimedia framework in the Symbian platform

allow you to provide DRM services in your application.</p>

<section id="GUID-541D396A-FAD1-4B8B-A4AB-09758369293B"><title>OMA download</title>

<p>The Symbian platform supports the <xref scope="external" href="http://www.openmobilealliance.org/">Open

Mobile Alliance</xref> (OMA) download v1.0 open standard and application-level

protocol that enables reliable content downloads. It can be integrated with

other services, such as billing, allowing premium-priced content to be made

available to mobile users. OMA download replaces content object descriptor

(COD) download as the preferred method for downloading content to mobile devices.</p>

<p>OMA download improves the mobile device user experience by informing

users of the success of the content download. This helps ensure that the content

can be used in the mobile device and that users are not charged if downloading

fails. OMA download is used on top of HTTP or the wireless session protocol

(WSP). </p>

<p>The effort needed to implement OMA download is minimal. An operator

only needs to create a so-called download descriptor file for each piece of

content and make simple changes in the HTTP server to enable the OMA download

protocol. For example, OMA download can be adopted without any changes in

the billing mechanisms. However, to fully benefit from it, some changes are

required in order to know whether users received the ordered content and hence

ensure that they will not be charged if downloading fails. The install notification

feature of OMA download can, for example, be used as an event that triggers

billing.</p>

<p>OMA DRM and OMA download are independent technologies for independent

tasks. Both promote the mobile content downloading business as well as improve

the mobile device user experience of mobile content. Content protected by

OMA DRM can be delivered using OMA download as well as multimedia messaging

service (MMS), mobile information device profile (MIDP) OTA, and so on. OMA

DRM and OMA download are standardized in parallel by OMA. For more information,

see <xref href="GUID-60F25F66-8CC5-46BF-9274-BDE8F9A10B74.dita">OMA

DRM v1.0</xref>.</p>

</section>

<section id="GUID-5968A533-AC94-4DC6-B0B3-4F9A0D149F88"><title>Additional information</title>

<p>For general information on DRM and reliable download technologies, see

the <xref scope="external" href="http://www.forum.nokia.com/main/resources/technologies/drm_and_download/index.html">DRM

and Download page</xref>. It includes links to information on Open Mobile

Alliance (OMA) DRM and OMA download standards as well as a useful table on

DRM support in different releases of the Symbian platform.</p>

<p>For additional information on DRM, see the <xref scope="external" href="http://www.forum.nokia.com/main/resources/documentation/drm.html">DRM

documentation page </xref>.</p>

<p>Forum Nokia also provides documentation on using downloading and DRM

features in <xref scope="external" href="http://www.forum.nokia.com/main/resources/technologies/symbian/documentation/browsing___drm___download.html">applications

written in Symbian C++</xref>.</p>

<p>For more information on multimedia and the multimedia framework, see <xref href="GUID-C5738F3D-E1D5-492D-89C9-5AC28F22BE71.dita"></xref>.</p>

</section>

</conbody></concept>