Patent ID: 7127043

Claim:
A system for routing a call between first and second telephone line interfaces depending on an entered number, the system comprising: a telephone digit detector for detecting and buffering a series of digits received from a telephone line connector; a call processor for determining if the buffered series of digits matches a stored telephone number; and a telephone line switch for directing an outgoing call to one of the first telephone line interface and the second telephone line interface based on an output of the call processor, wherein the call processor further comprises a telephone number converter for converting a first number, accessible by the first telephone line interface but not accessible via the second telephone line interface, to a second number, accessible via the first and second telephone line interfaces when the first number is determined to match the stored telephone number, such that the call processor directs the outgoing call to the second telephone line interface using the second number when the first number is determined to match the stored telephone number.