flow diagram form in fig2 and 3 with respect to the system architecture of fig1 in particular a communication connection is established between the calling party located at telephone station set 111 and the subscriber located at telephone station set 122 this is accomplished for example by the calling party at telephone station set 111 going off hook at step 201 and dialing the telephone number of the subscriber located at telephone station set 122 at step 202 in response to the dialed digits the controller 101 c of communications system 101 at step 203 causes a call connection to be extended over path 1 to the lnterexchange carrier system 103 which in response to control signals received from controller 101 c over control channel cs extends this call connection over path 2 to communications system 102 at step 204 the control signals originated by the controller 101 c are propagated by the lnterexchange carrier system 103 to the controller 102 c of communications system 102 the controller 102 c responds to the received control signals by further extending the call connection over path 3 to the telephone station set 122 of the subscriber at step 205 the subscriber is provided with a voice mail feature by use of the voice messaging system 121 by the communication system 102 which voice mail feature is activated in response to the occurrence of one of a plurality of conditions for example the subscriber may activate a do not disturb feature which automatically redirects incoming calls that.