Auto Answer Back 

Auto answer back feature is when implemented on a business set, allow any incoming call to the primary directory number (PDM) of the set to be automatically answered after four seconds of ringing. 



Auto Dial 

Auto dial allows the business set user to call a frequently dialed number by pressing the assigned feature key. 



Automatic Line

​Business set automatic line (AUL) is a directory number (DN) feature that may be assigned to individual DN on a business set station, including the primary DN.



Busy Override

​Busy set override allows a business set to gain access to a busy station by pressing the busy override key. 



Call Back Queuing 

​Call back queuing allows a business set user to request a call back when encountering an all trucks condition on the customers outgoing trucks.



Call Forward

​Call forward allows a business set user to forward calls to another Meridian Digital Centrex (MDC) user. Optional call forward conditions are call forward-no answer, call forward intra-group.



Call Forward Reason Display 

​​Call forward reason display allows business set user to identify the type of forwarded condition when they receive forwarded call. Requires display option on customer equipment. 



Call Forward/Auto Display 

​​Call forward/auto dial displays the number currently programmed for the call forward or the automatic dial features. Requires display option on customer equipment. 



Call Park 

Call park enables a business set user to park a call against their directory number. The parked call can be retrieved from any station by dialing the retrieve code and the directory number against which the call is parked. 



Call Waiting 

​​Call Waiting provides a tone to the MDC user to alert them of another incoming call request. the called MDC station may acknowledge the new caller by placing the existing call on hold or by abandoning the existing call and receiving the new caller. 



Display Called Number 

​​Display called number provides visual feedback visual feedback of the number dialed on outgoing calls. Display called number only applies to intra-group calls. Requires display option on customer equipment. 



Display Calling Number 

Display calling number provides business set user with visual feedback concerning incoming calls. Displays called number only applies to intra-group calls. Requires display option on customer equipment. 



End-To-End Signaling

End-To-End signaling provides the capability to out pulse dual-tone multi-frequency digits while active on a call. 



Feature Code Access

Feature code access provides an alternate method of accessing MDC features other than through the use of feature keys. 



Feature Display  

Feature display provides the business set user with visual feedback for feature activation, including features such as three-way calling, call transfer, call waiting, call park, ring again, call pickup, busy override and speed call.  Requires display option on customer equipment.  
  
Group Intercom  
Group intercom allows an MDC user to call a member of a pre-designated group by using abbreviated dialing.  
  
Held Calls  
Held calls allows a business set user to hold an established call on the business set.  The MDC user may originates or receive another call on an idle directory number.  
  
Individual (POTS) Business Line  
Individual (POTS) business line allows the business set subscriber the appearance of the POTS line as one of the DN keys on the set.  
  
Intercom  
Intercom feature allows a customer to directly terminate on a pre-designated set by depressing the intercom key on the business set.  
  
Listen On Hold  
Listen on hold allows a business set user to monitor a call through the speaker in customer premises equipment.  When the called party answers, the MDC business set user must remove the handset from the cradle.  
  
Make Set Busy  
Make set busy allows a business set user to place their primary directory number in a busy condition to outside calls.  
  
Malicious Call Hold  
Malicious call hold (MCH) feature allows a business set subscribe to hold a connection within the switching unit on a malicious call, enabling the call to be traced back to the originating party.  
  
Message Wait Indicator  
Message wait Indicator feature provides a message waiting lamp on the business set indicating a message is waiting to be retrieved.  This applies to only the primary directory number not other directory numbers available from that set.  
  
Multiple Appearance Directory Number  
Multiple appearance directory number allows a directory number to be assigned to more that one business set for multiple call arrangement.  With Single Call Arrangement (SCA) any business set user with the directory appearance may make or receive calls on the directory number.  SCA allows only one business set user to be active on the directory number at one time.  With Multiple Call Arrangements (MCA) more than one business set user can be active on the directory number at one time, limited by the number of appearances in the group.  
  
On Hook Dialing  
On hook dialing allows the MDC business user to originate calls without lifting the handset.  
  
Query Time Key  
Query time key displays the current time and date by activating the time key.  Requires display option on customer premises equipment.  
  
Ring Again  
Ring again allows the MDC business set user to monitor a busy set of directory number appearances on the business set.  The short hunt is limited to the number of directory appearances on the business set.  
  
Short Hunt  
Short hunt allows incoming calls to a business set user to hunt over a set of directory number appearance on the business set.  The short hunt is limited to the number of directory appearances on the business set.  
  
Speed Calling  
Speed calling allows a MDC business set user to access frequently dialed numbers by utilizing an abbreviated code.  
  
Three-Way Calling  
Three-way calling enables an MDC business set user to establish a three-way call.  
  
Transfer  
Transfer enables an MDC business set user to transfer a call to another MDC user.