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CHAPTER 6. CENTRALIZED ATTENDANT SERVICE (CAS)
CHAPTER 6. CENTRALIZED ATTENDANT SERVICE (CAS)
(V3 AND GENERIC 1 SYSTEMS)
Description
The CAS feature allows system users served by separate switches at two or more locations
to concentrate the attendant positions at one location. This location is called the CAS main.
The other locations, typically without attendants, are called CAS branches. All locations
within the CAS environment have separate Listed Directory Numbers (LDNs).
Incoming calls to the CAS main are handled as if the switch is a stand-alone system. Any
attendant-seeking calls at a CAS branch are routed to the attendant consoles at the CAS
main over Release Link Trunks (RLTs). The RLTs are special trunks that are used only for
attendant-seeking calls from the CAS branches. The CAS attendant cannot originate a call
over an RLT.
The CAS calls may be any calls that would normally go to the local attendant console. The
CAS attendant answers these calls and then extends them (over the same RLT) to the
requested extension or external number at the branch. When the CAS attendant releases,
the RLT is free for another call. The extended call will return to a CAS console if it is not
answered within a preset time.
The CAS calls can also be held at the console, placed on Remote Hold, or released (ended).
The CAS calls can be held on the console the same as any other call. Remote Hold is a
feature used by CAS attendants that allows a call to be held at the branch location. This
feature frees the console and the RLT for other calls. As with extended calls, a call on Hold
or on Remote Hold will return to a CAS console if it is not answered within a preset time.
To speed the dialing procedure when extending a CAS call, the CAS attendant can use the
following features:
Ž Abbreviated Dialing
Ž Attendant Direct Trunk Group Selection
Ž Direct Extension Selection (DXS) With Busy Lamp Field (BLF) (if a selector console is
provided)
Note:
The DXS does not indicate busy extension numbers at the branch
locations.
Ž Facility Busy Indication.
Also, when extending a CAS call, the attendant can use some of the branch features such as
Code Calling Access and Loudspeaker Paging Access.
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