In CRS 3.5 and earlier JTAPI trigger is the CTI Route Point configured on CallManager. It needed to be configured on CCM prior to configuring it on CRS.
In CRS 4.0(x) you dont need to create the CTI RP associated with CRS on CCM, you simply create it on CRS as described in that section. To answer your question it is the CTI RP which is a Dialed Number to reach a particular CRS application.
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...