added function f_setHeadersSUBSCRIBE

		}// end f_setHeadersNOTIFY

		/*

			* 

			* @desc setting of Subscribe header fields (IMS addresses)

			*			extension of general settings from LibSip basic function

			* @param p_cSeq_s current cSeq 

			* @param p_to_user user_profile id of the user to be invited

			* @verdict 

			*/

		function f_setHeadersSUBSCRIBE(inout CSeq p_cSeq_s, in SipUrl p_to_user) runs on ImsComponent

		{      

    			vc_to := {	fieldName := TO_E,

        			addressField :=

        			{

        				nameAddr := {

        					displayName := omit, 	 			// optional charstring

        					addrSpec :=	p_to_user	// SipUrl

        				}

        			},//end addressField

        			toParams := omit

    			};

				vc_from := f_initFromHeader(vc_userprofile.id, f_getRndTag()); // init of vc_from using userProfile identifier

				vc_requestUri :=p_to_user; // Request URI of Invite is identical with To header

				LibSip_Steps.f_setHeadersSUBSCRIBE(p_cSeq_s);

		}// end f_setHeadersSUBSCRIBE

		function f_setHeadersReINVITE (inout CSeq p_cSeq_s) runs on ImsComponent

		{

		  f_setHeadersGeneral(p_cSeq_s, "INVITE"); // cseq, contact, branch, via