Service code conversion
First Claim
1. In a common control telephone system having dual translation circuits, a method for connecting special service calls comprising the steps of:
- a. dialing an abbreviated service access code from a calling line into one of a plurality of common registers;
b. storing a class-of-service signal associated with said calling line in said common register;
c. transferring the access code and class-of-service signal from said common register to a first translation circuit;
d. decoding the transferred access code and class-of-service signal into a service code signal;
e. enabling a service control circuit with said service code signal;
f. translating the access code into a directory number and type of call signal in said first translation circuit under the direction of the enabled service control circuit;
g. transferring said directory number and type of call signal into storage in said common register and in a second translation circuit;
h. marking a line circuit corresponding to the directory number under the direction of the second translation circuit, andi. connecting the calling line to the marked line circuit which corresponds to the dialed abbreviated service access code.
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Accused Products
Abstract
A method of service code conversion and a service code conversion control circuit are disclosed for translating a dialed service access code in an abbreviated form into the directory number of a line circuit. A class-of-service indication assigned to a calling line circuit and a dialed abbreviated service access code are steered from a common register to a first translation circuit normally providing outgoing routing information for trunk marking. Instead of providing outgoing routing information, the first translation circuit or translator is strapped to recognize the class-of-service indicator and abbreviated dialed access code to enable a service code conversion control circuit. The service code conversion control directs the first translator to perform a conversion of the access code to a type of call indicator and a directory number, both of which are returned to the common register. A second translation circuit is enabled by the converted information which was returned to the common register and thereafter seizes a line circuit corresponding to the stored directory number and having a special service station terminated thereat.
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Citations
10 Claims
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1. In a common control telephone system having dual translation circuits, a method for connecting special service calls comprising the steps of:
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a. dialing an abbreviated service access code from a calling line into one of a plurality of common registers; b. storing a class-of-service signal associated with said calling line in said common register; c. transferring the access code and class-of-service signal from said common register to a first translation circuit; d. decoding the transferred access code and class-of-service signal into a service code signal; e. enabling a service control circuit with said service code signal; f. translating the access code into a directory number and type of call signal in said first translation circuit under the direction of the enabled service control circuit; g. transferring said directory number and type of call signal into storage in said common register and in a second translation circuit; h. marking a line circuit corresponding to the directory number under the direction of the second translation circuit, and i. connecting the calling line to the marked line circuit which corresponds to the dialed abbreviated service access code. - View Dependent Claims (2, 3, 4)
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5. In a common control telephone system having a first translation circuit, arranged to translate dialed directory numbers into equipment numbers and including first circuit means for marking line circuits of connected stations, and a second translation circuit, arranged to translate dialed digits into trunk routing information and including second circuit means for marking trunk circuits, and a plurality of common registers, arranged to be accessed on a time divided basis by a register common circuit means connected to each translation circuit, for receiving dialed digits from subscribers, a service code control circuit comprising:
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third circuit means for decoding a service access code dialed into one of said common registers and for generating a service code signal upon the receipt thereof by the second translator circuit; fourth circuit means, arranged to be enabled by said service code signal for controlling the translation of the service access code into a directory number in said second translation circuit, and fifth circuit means, arranged to be enabled by said service code signal, to transfer said directory number to the same common register from which said service access code was received. - View Dependent Claims (6, 7, 8, 9, 10)
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Specification