Since we're moving things over to production, this isn't a final production name, but you should be able to use these for the BETA cluster:

number@cherrio1.voipo.com

number@cherrio2.voipo.com

Either should work in 10 and 11 digit format I believe.

These should route to the proper server if residential or follow your rules if it's Express/Carrier.

Try that and let me know if it works for you...