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<concept xml:lang="en" id="GUID-1363E501-4483-5974-88D3-FBCADD61311E"><title>Multimode Call</title><shortdesc> <apiname>RMobileCall</apiname> encapsulates information and functionality for a particular call. It is derived from the <apiname>RCall</apiname> 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 OS components. </p> </conbody></concept>