question: public GenericSipRtpSession createRtpSession ( ContactId contact , String featureTag , String encoding ) { if ( sLogger . isActivated ( ) ) { sLogger . info ( "Initiate a RTP session with contact " + contact ) ; } return new OriginatingSipRtpSession ( this , contact , featureTag , mRcsSettings , System . currentTimeMillis ( ) , mContactManager , encoding ) ; }
target:  Initiate a RTP session