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Application filed by Compuspec Ind LtdfiledCriticalCompuspec Ind Ltd
Priority to NZ520335ApriorityCriticalpatent/NZ520335A/en
Priority claimed from PCT/NZ2001/000007external-prioritypatent/WO2001056261A1/en
Publication of NZ520335ApublicationCriticalpatent/NZ520335A/en
A dialing code processor detects a dialing signal placed on the telephone line, inverts the detected signal and adds further code signals to the inverted signal to form a modified signal that is reinserted on the line. The inverted signal part of the modified signal substantially cancels the originally dialed signal so that the dialing signal on the line consists of the further code signal of the modified signal. The dialing code processor can be connected in parallel with the network line 11 and operate on any dialing signal from any of the handsets 13.