SOLVED Page and play audio every 2 hrs

38 10 * * * fs_cli -x "originate {sip_auto_answer=true}user/300@yourdomain &playback(/var/lib/freeswitch/recordings/yourdomain/Break_Buzzer.wav)"
 
Every two hours, as in 2:00, 4:00, etc.?
Then start your cron job with
0 */2 * * *

Otherwise, just duplicate the cron entry and manually set the hours and minutes you want it to execute.

Edit:
If you want every odd hour, use this:
0 1-23/2 * * *