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    [MMC 406] Trunk Ring Assignment
 --------------------------------------
 Enables ringing to a specific station
 or a group of stations or an auto 
 attendant when incoming calls are 
 received.

 ** Default :
    Day   : 500
    Night : 500

 ** Related Items
   MMC 202 Change Feature Passcode
   MMC 507 Assign Auto Night Time
   MMC 601 Assign Station Group

