Method and system for detecting at a selected station an alertin
Method and system for encoding and decoding typographic...
Method and system for reliably detecting voiceband signaling...
Method for simulating a ring back for a call between parties...
Method of determining levels at given frequencies of a VF signal
Method of improving receiver sensitivity and speech immunity wit
Method of improving the CAS tone signal detection of a...
Method of synchronizing LEDS between a digital telephone and rem
Monolithic telephone subscriber line interface circuit
Multi-frequency signal detector and classifier
Multi-frequency signal receiver and a method of detecting the mu
Multi-frequency tone detector