LandOfFree - US Patents - Listing for Telephonic communications,Supervisory or control line signaling,Using line or loop condition detection

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Method and arrangement for filtering of signals

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Method and circuit for failsafe switch-hook detection during fau

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Method and device for detecting a ringtrip

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Method and modem circuit for determining connection status...

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Method and system for line status indicators using line side...

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Method and telecommunications center for recognizing...

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Method for activating a lamp on analog customer premises equipme

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Method for automatic speech direction reversal, and circuit conf

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Method for automatically switching telephone system to an...

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Method for determining telephone dial pulse parameters independe

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Method for off-hook detection during ringing and the use of a su

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Method for recognizing an off-hook condition on a single...

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Method for transmitting charging signals via a data...

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Method of and circuit arrangement for evaluating the output sign

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Method of automatic speech direction reversal and circuit config

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Method of determining answer supervision at a line...

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Musicians telephone interface

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Off-hook detector for headset

Telephonic communications – Supervisory or control line signaling – Using line or loop condition detection

Off-hook telephone clearing system