Missing hint in extensions_additional.conf

[ext-local] contains only 1 hint entry for ext 1002 eventhough 1000-1003 are registered. The net result is that calls to extensions other than 1002 route directly to voicemail prompt.

From extensions_additional.conf [ext-local] context
exten => 1002,hint,SIP/1002

From show sip peers:
Name/username Host Dyn Forcerport ACL Port Status Description
1000/1000 192.168.12.5 D A 5060 OK (136 ms)
1001/1001 172.17.80.1 D A 5060 OK (133 ms)
1002/1002 172.17.80.2 D A 5060 OK (117 ms)
1003/1003 192.168.12.6 D A 5060 OK (130 ms)