Camp-on Tone Security/FAX Machine options prevents you from hearing Camp-on tone. If any party in a call has this option enabled, no Camp-on tone is returned to anyone in the call.
If you attempt to Camp-on to a busy station that has Camp-on Tone Security/FAX Machine enabled, you will hear special busy tone instead of Camp-on tone or Music.
Enable Camp-on Tone Security/FAX Machine and Busy Override Security in the Class of Service Options form.
None.