Apparatus for interfacing analog telephones and digital data...

Details Apparatus for interfacing analog telephones and digital data... Apparatus for interfacing analog telephones and digital data...

H - Electricity

04

M

H04M 11/08 (2006.01) H04L 12/52 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2084108

An interface to an integrated service, digital network (ISDN) line for up to two analog dual tone, multifrequency telephones and up to four personal computers or data terminals. A stored program-controlled processor controls access to the ISDN line for the analog and digital interface circuits. The processor also provides access to switch-controlled ISDN features for the analog telephones (e.g., call waiting, call hold, etc.).

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