Matrix Visionpro System Manual page 185

You can refer the following flow charts for a clear understanding of the entire process.
System finds the cheapest
trunk from the group depending
upon the time on which call
Is the cheapest
trunk free?
No
Are other trunk
available in this
group?
Yes
Select next cheaper
trunk in this group
179
Station user dials trunk
group access codes
Time Based LCR Mixed LCR
A
Yes
System allots the
trunk to the station
End
No
System gives busy
tone to the station
System waits for next
action from the user
End
Start
LCR type
selected?
No LCR
System allots a free trunk
from the TAG depending
upon the rotation flag
End
Select next cheap
trunk in the group
No Yes
Is the cheapest
trunk free?
Number Based LCR
System allots free trunk from
the trunk access group as per
number logic and rotation logic
System waits for dialing
of entire number
System finds cheapest
trunk for this number
No
Is the cheapest
trunk free?
Yes
System dials out the number
End
Matrix VISIONPRO System Manual