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<!DOCTYPE concept
  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
<concept id="GUID-1363E501-4483-5974-88D3-FBCADD61311E" xml:lang="en"><title>Multimode
Call</title><shortdesc> <codeph>RMobileCall</codeph> encapsulates information and functionality
for a particular call. It is derived from the <codeph>RCall</codeph> interface
of core telephony </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
<p>The functionality of <xref href="GUID-7B623041-5DB3-3EF6-AAF4-5AA89B519855.dita"><apiname>RCall</apiname></xref> is divided
into a number of functional units, for the purpose of easier documentation
and navigation and selectable support by TSY. Some <xref href="GUID-7B623041-5DB3-3EF6-AAF4-5AA89B519855.dita"><apiname>RCall</apiname></xref> functions
must be supported by the TSY, while others are optional and only need to be
supported if the TSY supports that functional area. </p>
<p>The following table lists its major functional areas, whether the area
must be supported by all TSYs, or whether it is optional, and whether the
area is of potential use in GSM, WCDMA and CDMA modes respectively. </p>
<table id="GUID-6975BF37-8D15-5B5A-AF44-89DBB638DDA4">
<tgroup cols="5"><colspec colname="col0"/><colspec colname="col1"/><colspec colname="col2"/><colspec colname="col3"/><colspec colname="col4"/>
<thead>
<row>
<entry>Area</entry>
<entry>Required</entry>
<entry>GSM</entry>
<entry>WCDMA</entry>
<entry>CDMA</entry>
</row>
</thead>
<tbody>
<row>
<entry><p> <xref href="GUID-BF93087C-A674-5CD0-9B5A-8F23F9734530.dita">call parameters</xref>  </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>Yes </p> </entry>
</row>
<row>
<entry><p> <xref href="GUID-771CC444-12CA-5DDE-B93B-EA419971C676.dita">call information</xref>  </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>Yes </p> </entry>
</row>
<row>
<entry><p> <xref href="GUID-30C8FE14-00CA-5B7F-9970-30E9632F00A6.dita">call control</xref>  </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>Yes </p> </entry>
</row>
<row>
<entry><p> <xref href="GUID-D05A52D7-2C95-5B6D-869A-46C00BD36024.dita">data calls</xref>  </p> </entry>
<entry><p>No </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>Yes </p> </entry>
</row>
<row>
<entry><p> <xref href="GUID-0231398C-EE3C-50A1-BB9E-734110C484B8.dita"> emergency
calls</xref>  </p> </entry>
<entry><p>No </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>Yes </p> </entry>
</row>
<row>
<entry><p> <xref href="GUID-F15FE507-F8E6-572F-B0F9-AF4651DD0046.dita">alternating
calls</xref>  </p> </entry>
<entry><p>No </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>No </p> </entry>
</row>
<row>
<entry><p> <xref href="GUID-0B743C31-9B99-54A0-AF7B-22AFA823101B.dita">Call Completion
to Busy Subscriber service</xref>  </p> </entry>
<entry><p>No </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>No </p> </entry>
</row>
<row>
<entry><p> <xref href="GUID-BA053D6F-5B9C-5F98-B70D-FD2323C58BDF.dita">User-To-User
Signalling service</xref>  </p> </entry>
<entry><p>No </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>No </p> </entry>
</row>
<row>
<entry><p> <xref href="GUID-FB05DCDD-38EC-53FB-865C-CF56727A47B7.dita">Multimedia
CS calls</xref>  </p> </entry>
<entry><p>No </p> </entry>
<entry><p>No </p> </entry>
<entry><p>Yes </p> </entry>
<entry><p>No </p> </entry>
</row>
<row>
<entry><p> <xref href="GUID-7A031B07-6B39-539E-B414-21B822D7E5FF.dita">voice privacy</xref>  </p> </entry>
<entry><p>No </p> </entry>
<entry><p>No </p> </entry>
<entry><p>No </p> </entry>
<entry><p>Yes </p> </entry>
</row>
<row>
<entry><p> <xref href="GUID-D68C72A9-2797-5044-A6A5-02F04C8ECF1B.dita">traffic
channel</xref>  </p> </entry>
<entry><p>No </p> </entry>
<entry><p>No </p> </entry>
<entry><p>No </p> </entry>
<entry><p>Yes </p> </entry>
</row>
</tbody>
</tgroup>
</table>
<p><b>Note </b> </p>
<p>Some areas while not strictly required <b>are</b> needed by other optional
Symbian platform components. </p>
</conbody></concept>