You can use alternate audio or music sources in vector loops to provide continuous audible feedback as shown in the following example vector steps.

1. ...
2. ...
3. ...
4. wait-time 30 secs hearing 55558 then continue
5. route-to number 913034532212 with cov n
6. goto step 4 if unconditionally

In the example shown above, a look-ahead call attempt is placed every 30 seconds on behalf of the caller. If extension 55558 is a long, barge-in, repeating announcement, the caller hears announcement 55558 all the way to the end without the announcement being restarted each time vector processing returns to step 4.