Assignee
TELTREND INC
US25 patents
Top patents by PatentIndex Score
US5315650AMay 24, 1994
Caller identification transmit path limiter
TELTREND INC60 citations94
US5963638AOct 5, 1999
Adjustable hybrid having improved biasing configuration
TELTREND INC18 citations92
US5555274ASep 10, 1996
Phantom data link for digital transmission lines
TELTREND INC23 citations92
US5566239AOct 15, 1996
Floating digital loop carrier telephone interface
TELTREND INC26 citations91
US5224149AJun 29, 1993
Testing system for digital transmission lines
TELTREND INC39 citations90
US5953412ASep 14, 1999
Method and apparatus for controlling line conditioner equalizer
TELTREND INC21 citations89
US5682385AOct 28, 1997
Enhancement for a multiplexing telecommunications interface
TELTREND INC32 citations89
US5509065AApr 16, 1996
Dual span monitoring system for maintenance shelf control
TELTREND INC20 citations89
US6111949AAug 29, 2000
Method of rapid automatic hybrid balancing
TELTREND INC39 citations86
US5680405AOct 21, 1997
Remote reporting system for digital transmission line elements
TELTREND INC15 citations78
US5907614AMay 25, 1999
High density telephone network interface unit
TELTREND INC17 citations77
US5862200AJan 19, 1999
Ground fault detector for T1 span equipment
TELTREND INC11 citations73
US5422950AJun 6, 1995
Remote terminal channel unit for telephone transmission lines
TELTREND INC18 citations72
US5347544ASep 13, 1994
Gain or loss compensation circuit for telephone lines
TELTREND INC19 citations72
US5689546ANov 18, 1997
Performance monitoring system for T1 telephone lines
TELTREND INC14 citations71
US6151691ANov 21, 2000
Remote reporting system for digital transmission line elements
TELTREND INC7 citations69
US5889785AMar 30, 1999
Remote reporting system for digital transmission line elements
TELTREND INC6 citations69
US5437023AJul 25, 1995
Noise-tolerant address transmission system for digital telecommunication network
TELTREND INC8 citations69
US5631956AMay 20, 1997
High density telephone network interface unit
TELTREND INC7 citations68
US5521977AMay 28, 1996
High density telephone network interface unit
TELTREND INC8 citations68
US5974137AOct 26, 1999
AGC amplifier for two-wire line conditioner
TELTREND INC15 citations66
US5444776AAug 22, 1995
Bridge for a network interface unit
TELTREND INC11 citations66
US5438606AAug 1, 1995
Open power loop detector for transmission line elements
TELTREND INC17 citations65
US5691998ANov 25, 1997
Data transmission protection circuit with error correction
TELTREND INC6 citations62
US5357569AOct 18, 1994
Trans-hybrid loss compensator for on hook transmission
TELTREND INC4 citations61