MESSAGE CENTER INTERFACE (MCI)
SYSTEM OPERATION
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A2315-10
SYSTEM OPERATION
As shown below, a direct call or a forwarded call from a station/trunk/Attendant terminates to the
VMS station in UCD group or Hunting group.
When the call is terminated to the VMS, the AP00 sends a call connection status information to
the VMS through the MCI. If the ANI information is sent from the network, the ANI information
can be added to the call connection status information by the system data programming (this fea-
ture is not available when the call is received from the CCIS trunk to the VMS). When the station/
trunk/Attendant leaves a message in the VMS, the VMS sends a Message Waiting lamp ON data
for the appropriate station through the PBX. After the station retrieves the messages, the VMS
sends a Message Waiting lamp OFF data for the appropriate station through the PBX.
The connecting patterns to the VMS are as shown in the following pages.
MCI System Operation
LC
DLC
PBX
TDSW
MP
AP00
VMS
Single Line
D
term
UCD Group
or Hunting Group
RS-232C Cable
TRK NETWORK
Message Waiting
lamp on/off data
LC
LC
Telephone
(Call Forwarding Set)
Connection
Status data
1
2
1 : Forwarded Call from a trunk
2 : Direct Call from a station
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