Northern Telecom NAC User Manual page 28

Figure 1-5
Network operations example (part 4)
Los Angeles
Calls
Network
transferred
calls
Figure 1-5 shows the peak time for the Los Angeles office. There are more
calls arriving in Los Angeles than it can efficiently handle. Meanwhile, the
Chicago office has passed its peak time and resumes its normal load. The
Toronto office has closed.
Chicago and Los Angeles nodal supervisors enter network configuration
control commands to adjust their own queues. The NAC sends pre-defined,
pre-scheduled change orders to the Toronto node to set up the overflow
targets for the calls that arrive there. The NAC determines which Chicago
queues can handle the overflowed calls from Los Angeles, then sends
appropriate messages to Chicago and Los Angeles. Network configuration
control commands are entered to overflow Los Angeles' excess calls to
Chicago.
Network Administration Center Supervisor's User Guide Product release 2
The Network Administration Center system 1-11
Chicago
Network
transferred
Calls
Toronto
CLOSED
calls
Calls