I created Virtual Extension 211 and set it as Follow-Me to my cell phone number.
Settings are
Initial Ring Time - 0
Ring Strategy - ringall
Ring Time - 20
Follow-Me List - 12345678910#
All others - Default.
It works fine, all calls to 211 are forwarded to my cell,
but FreePBX Notice appeared
THERE ARE 1 BAD DESTINATION
DEST STATUS: EMPTY
FOLLOW-ME: 211 (MyCell)
Added 3 seconds ago
(retrieve_conf.BADDEST)
FreePBX 2.6.0.0
Asterisk (Ver. 1.4.24)