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LOOP-START TRUNKS:
WHEN TO USE LOOP-START TRUNKS
There are two times when you consider the use of
Proper Loop-Start Facility Applications
If
Most of the problems associated with
Besides, the cost of converting all of the
Note:
Unavoidable Loop-Start Facility Applications
One situation that will require the use of
Consider the case of a state government. In the early seventies the state linked all departments, large and small, in one Centrex system in order to control
Now, departments like Motor Vehicles and the State Police, have grown to the size of small companies and occupy their own buildings. The Centrex is no longer capable of providing efficient internal communications for the large departments, and traffic demands from large departments are swamping service to smaller departments. The state would like to keep Centrex for convenient interdepartmental calling without message unit charges. The larger departments, however, need PBXs like the LEGEND system to take the load off the Centrex and for better internal communications. The local operating company will only provide Centrex service on
facilities are always preferred.
3.Some true manual PBXs are probably still present in the field. but you are not likely to encounter one during the installation of a modern PBX. On a true manual PBX all calls, both incoming and outgoing, must be handled by an attendant. there is no way to dial a code such as “9” for an outside line. h is this close supervision by the attendant that makes