Problemas com extensão telefónica asterisk

List DND-enabled extensions

Se o DND estiver configurado usando o recurso DND do IP-Phone, então não há como você pode listá-los. Caso contrário, se estiver configurado usando o código do recurso FreePBX (* 78), então aqui está a maneira de fazê-lo:

No prompt do linux run:
# asterisk -rx “database show DND” or

#asterisk -rx “database show” | grep “/DND/”

# asterisk -rx "database show DND"
/DND/1002                                         : YES
/DND/1004                                         : YES
/DND/1006                                         : YES
/DND/1007                                         : YES

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To remove DND from an extension run:

# asterisk -rx “database del DND ext.”

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To enable DND manully for an extension run:

# asterisk -rx “database put DND ext. YES”

# asterisk -rx "database put DND 1002 YES"
Updated database successfully

# asterisk -rx "database show DND"
/DND/1002                                         : YES 

fonte: http://www.mehrdust.com/archives/how-to-list-all-dnd-enable-extensions