Vertical summit - SMDI (Simplified Message Desk Interface) AA;VM Signaling

Summit & Summit 800
Feature Description and Operation Manual Issue 1.2
120
Related Features
 AA/VM Group
 SMDI (Simplified Message Desk Interface)
 Auto Call Recording
 Two-Way Record
 Integrated Auto Attendant/Voice Mail
Hardware
 External AA/VM system
2.38.3 SMDI (Simplified Message Desk Interface) AA/VM Signaling
Description
The system may employ SMDI (Simplified Message Desk Interface) protocol to communicate
with an adjunct AA/VM system. When a call is routed to an AA/VM SLT port, the system will send
SMDI messages over the assigned SMDI RS-232 port, informing the AA/VM of the
characteristics of the call.
SMDI Protocol
There are three types of SMDI messages. Within each message is an “Action Code”, which
defines the function or required action of the AA/VM system. Fields within the messages also
define the called/calling station and station status. The various message types and definition of
the fields are shown in the chart below.
Type I message
cr lf MD ggg mmmm a xxxxxxxxx sp yyyyyyyyy sp cr lf^Y
Type II message
cr lf MD ggg mmmm a xxxxxxxxx sp sp cr lf^Y
Type III message
cr lf MD ggg mmmm a sp yyyyyyyyy sp cr lf^Y
Field
Description
cr
carriage return
lf
line feed
MD
Message Desk
ggg
Message desk number, AA/VM system, default 001
mmmm
Message Desk terminal, 0001-9999, VM port
a
action code
xxx...x
called station number or station calling the VM group
yy…y
calling station number
sp
ASCII space character
^Y
end of SMDI message, control + Y (0x19)