Absolutely possible. Create a partition that you name something intuitive to distinguish it to be used for outside calls where a message should be played. In this partition create a Translation Pattern that matches the DN that you’d like to play the message to, on this change the called number to something to be able to distinguish it in the VM system, for example add something in-front of the number. Then create a CTI RP that has the directory number of the number that you put as the output from the TP and set it to do call forward all to VM. In the VM system create a Call Handler that has the extension that matches the directory number on the CTI RP and set it to play the message. Next create a CSS that is to be used as the inbound CSS on the gateway/trunk. The easiest is to create it by copying the current CSS that is used as the inbound CSS. In this CSS add the newly created partition and order it before the partition where you have your directory numbers.
With this the call should match the TP as it is a equal match as the DN, but with a better match as the PT is ordered higher in the list in the CSS.
