Here is a copy of my remote access, when I dial the remote access extension (1234) I get the screech/beep tone. My extension for remote access is not a direct line and when I dial it from inside the office I don't need my barrier code.
display remote-access
REMOTE ACCESS
Remote Access Extension: 1234 Barrier Code Length: 5
Authorization Code Required? n
Barrier Expiration No. of Calls
Code COR TN COS Date Calls Used
1: xxxxxx (barrier code) 0 1 0 10/06/03 1 0
2:
Permanently Disable? n
(NOTE: You must logoff to effect permanent disabling of Remote Access)
If you send the route-to number in the previous to the fac code for announcements, in my switch the Fac is 199, then when you dial in, you enter the barrier code once you hear that dialtone then you can dial the 4 digit extension of your announcement as needed. (call in a different extension each time)