06-04-2012, 04:25 PM
Centralized Automatic Message Accounting System
INTRODUCTION
One broad objective of the Bell System is to extend the customer’s
dialing range so that ultimately he will be ~ble to dial his own calls to
any telephone in the country in much the same way as he now dials local
calls. Several steps toward this goal have already been taken. A revised
fundamental planI for automatic toll switching~ has been ~dopted which
involves among other things the use of a nationwide numbering plan~
covering the United States and Canada. In accordance with this plan
each customer will be given a distinctive 10-digit designation which will
consist of a 3-digit regional or area code, a 3-digit central office code, and
a 4-digit customer’s number. In many parts of the country automatic
toll switching systems* are now in use by operators who complete more
than 40 per cent of all toll calls by dialing directly to the called telephone
in distant cities.
In order that customers may use these switching systems to dial their
own toll calls, some automatic means for recording the necessary billing
information on such calls must be provided.
INTRODUCTION
One broad objective of the Bell System is to extend the customer’s
dialing range so that ultimately he will be ~ble to dial his own calls to
any telephone in the country in much the same way as he now dials local
calls. Several steps toward this goal have already been taken. A revised
fundamental planI for automatic toll switching~ has been ~dopted which
involves among other things the use of a nationwide numbering plan~
covering the United States and Canada. In accordance with this plan
each customer will be given a distinctive 10-digit designation which will
consist of a 3-digit regional or area code, a 3-digit central office code, and
a 4-digit customer’s number. In many parts of the country automatic
toll switching systems* are now in use by operators who complete more
than 40 per cent of all toll calls by dialing directly to the called telephone
in distant cities.
In order that customers may use these switching systems to dial their
own toll calls, some automatic means for recording the necessary billing
information on such calls must be provided.