Matrix PRASAR UCS - OG Trunk Bundle Group

Matrix PRASAR UCS System Manual 987
OG Trunk Bundle Group
What’s this?
OG Trunk Bundle Group provides efficient allocation of trunks to different extensions.
All the trunks connected to the system can be bunched in different groups called OG Trunk Bundle Group.
Maximum 8 Trunk Bundles can be put in one OG Trunk Bundle Group and 32 such OG Trunk Bundle Groups can
be formed.These OG Trunk Bundle Groups can be allotted to each individual extension. An Extension can be
allotted different OG Trunk Bundle Group during different timings of the day.
How it works
System uses two methods while selecting a trunk from the OG Trunk Bundle Group: ‘Remember last trunk’ and
‘Don’t Remember last trunk’.
In ‘Remember last trunk’ method, the system remembers the last trunk used and allots next trunk in the group to
the extension. In ‘Don’t remember last trunk’ method, the system searches for a first free trunk from the group.
Following flow chart depicts the chronology of events when an extension grabs a trunk.
Start
Station User dials trunk
group access codes
Which LCR type is
selected
System finds the
cheapest trunk from
the group depending
upon the time at
which the call is made
Is the
cheapest trunk
free?
Are other Trunks
available in this
group?
Select next cheapest
trunk in the group
No
Yes
No
System gives busy
tone to the Station
System waits for
the next action
from the user
A
Time based LCR Mixed LCR
System finds the cheapest
trunk from the group
depending upon the
tariffs offered according
to the area/distance/
phone number dialed
Is the
cheapest trunk
free?
Are other Trunks
available in this
group?
Select next cheapest
trunk in the group
Yes
Yes
System gives busy
tone to the Station
System waits for
the next action
from the user
Number based LCRNo LCR
End
No
System dials out
the number
No
End
System waits for dialing
of the entire number
B
C
System allots a free
trunk from the OG
trunk bundle group
depending upon the
rotation flag
End
Service
Provider
based LCR