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Patent No. TITLE ---------- ---------- ----- 460733 5680404 CYCLING ERROR COUNT FOR LINK MAINTENANCE 158347 4,887,293 TELEPHONE SYSTEM 829907 4727578 TELEPHONE SYSTEM 839521 4701948 COMMUNICATION SYSTEM HAVING SEPARATE UNIDIRECTIONAL INFORMATION SIGNALLING 420648 5054062 CIRCUIT FOR MAINTAINING HYBRID CANCELLATION OF SIGNALS IN A COMMUNICATION SYSTEM 903143 4788720 PROGRAMMABLE SUBSCRIBER SET 928053 4805211 SUBSCRIBER SET PROGRAMMING MODULE 928056 4736406 EXPANSION SUBSYSTEM FOR USE IN A COMMUNICATION SYSTEM 386697 5202883 DIGITAL KEY SYSTEM ARCHITECTURE 09/611054 n/a MECHANISM FOR SHARING OF GUARANTEED RESOURCES 09/642,340 n/a CALL PROCESSING WITH SYNCHRONIZED TUPLE SPACES 09/587,721 n/a SYNCHRONIZATION METHOD AND SYSTEM FOR KEEPING TRACK OF ENCODING HISTORY TO MAINTAIN DIGITAL SYSTEM SYNCRHONIZATION DURING COMMUNICATION OVER LOSSY TRANSMISSION MEDIA 10/631811 n/a ARCHITECTURE AND IMPLEMENTATION FOR CONTEXT AWARE CALL PROCESSING WITH LOCAL FEATURE DEFINITION 10/941961 n/a A METHOD OF OPTIMAL MICROPHONE ARRY DESIGN UNDER UNIFORM ACOUSTIC COUPLING CONSTRAINTS 11/027234 n/a SYSTEM AND METHOD OF SELF-DISCOVERY AND SELF-CALIBRATION IN A VIDEO CONFERENCING SYSTEM 10/881468 n/a PHYSICAL BEAMFORMING USING OMNIDIRECTIONAL MICROPHONES 11/045825 n/a NARROW BAND TONE DETECTION IN ECHO CANCELLER SYSTEMS 11/075811 n/a HIGH PRECISION BEAMSTEERER BASED ON FIXED BEAMFORMING APPROACH 11/008510 n/a OPTIMAL DESIGN OF A LEAK TO CORRECT THE NEGATIVE EFFECT OF ENSLOSURE ACOUSTIC MODES ON THE LOUDSPEAKER FREQUENCY RESPONSE 11/077069 n/a UNIVERSAL MICROPHONE ARRAY STAND 11/104827 n/a A METHOD FOR RECOGNIZING LOCATION MOVE OF VOIP PHONES IN A CLOSED ENVIRONMENT 10/780220 n/a METHOD OF DYNAMIC ADAPTATION FOR JITTER BUFFERING IN PACKET NETWORKS 10/729842 n/a A DEVICE FOR CHANGING THE SPEAKING RATE OF RECORDED SPEECH 11/063563 n/a METHOD OF EARLY DETECTION OF ENCRYPTED SIGNALS IN PACKET NETWORKS 10/449950 n/a BEST EFFORT SEARCH EMAIL GATEWAY 10/457076 n/a VISUALLY IMPAIRED APPLICATION 10/670172 n/a ADAPTIVE PREDICTIVE PLAYOUT SCHEME FOR PACKETIZED VOICE APPLICATIONS 10/421316 n/a COMPENSATION OF BEAMFORMER STEERING DELAY FOR IMPROVEMENT OF HANDSFREE SPEECH RECOGNITION 10/302119 n/a AUTOMATIC LOCATION-AWARE FEATURE SELECTION 10/310558 n/a PRO-ACTIVE FEATURES FOR TELEPHONY - 19 -

Patent No. TITLE ---------- ---------- ----- 460733 5680404 CYCLING ERROR COUNT FOR LINK MAINTENANCE 158347 4,887,293 TELEPHONE SYSTEM 829907 4727578 TELEPHONE SYSTEM 839521 4701948 COMMUNICATION SYSTEM HAVING SEPARATE UNIDIRECTIONAL INFORMATION SIGNALLING 420648 5054062 CIRCUIT FOR MAINTAINING HYBRID CANCELLATION OF SIGNALS 09/843409 6801609 LOG IN TO A COMMUNICATION SYSTEM 903143 4788720 PROGRAMMABLE SUBSCRIBER SET 928053 4805211 SUBSCRIBER SET PROGRAMMING MODULE 928056 4736406 EXPANSION SUBSYSTEM FOR USE IN A COMMUNICATION SYSTEM 386697 5202883 DIGITAL KEY SYSTEM ARCHITECTURE 09/611054 n/a MECHANISM FOR SHARING OF GUARANTEED RESOURCES 09/642,340 n/a CALL PROCESSING WITH SYNCHRONIZED TUPLE SPACES 09/587,721 n/a SYNCHRONIZATION METHOD AND SYSTEM FOR KEEPING TRACK OF ENCODING HISTORY TO MAINTAIN DIGITAL SYSTEM SYNCRHONIZATION DURING COMMUNICATION OVER LOSSY TRANSMISSION MEDIA 10/631811 n/a ARCHITECTURE AND IMPLEMENTATION FOR CONTEXT AWARE CALL PROCESSING WITH LOCAL FEATURE DEFINITION 10/941961 n/a A METHOD OF OPTIMAL MICROPHONE ARRY DESIGN UNDER UNIFORM ACOUSTIC COUPLING CONSTRAINTS 11/027234 n/a SYSTEM AND METHOD OF SELF-DISCOVERY AND SELF-CALIBRATION IN A VIDEO CONFERENCING SYSTEM 10/881468 n/a PHYSICAL BEAMFORMING USING OMNIDIRECTIONAL MICROPHONES 11/045825 n/a NARROW BAND TONE DETECTION IN ECHO CANCELLER SYSTEMS 11/075811 n/a HIGH PRECISION BEAMSTEERER BASED ON FIXED BEAMFORMING APPROACH 11/008510 n/a OPTIMAL DESIGN OF A LEAK TO CORRECT THE NEGATIVE EFFECT OF ENSLOSURE ACOUSTIC MODES ON THE LOUDSPEAKER FREQUENCY RESPONSE 11/077069 n/a UNIVERSAL MICROPHONE ARRAY STAND 11/104827 n/a LIVE APPEARANCE 09/671395 6,597,767 A METHOD FOR RECOGNIZING LOCATION MOVE THE SYNCHRONIZATION OF VOIP PHONES ANALOG CALL DISPLAY DATA IN A CLOSED ENVIRONMENT 10/780220 n/a DISTRIBUTED SYSTEMS 09/568703 6735194 METHOD TO IMPLEMENT DIGITAL PRIVATE SIGNALLING SYSTEM (DPNSS) 09/563552 6,650,744 VOICE MULTICAST METHOD 09/660947 6744900 COMPLEX ACOUSTIC PATH AND GASKET FOR USE WITH MICROPHONES 09/663026 6778641 POLICY REPRESENTATIONS AND MECHANISMS FOR THE CONTROL OF SOFTWARE BASED COMMUNICATION AND BUSINESS SYSTEMS 09/710174 6,480,122 POWERING ARRANGEMENT FOR AN ETHERNET LAN CONNECTED TELEPHONE 09/695,214 6,643,659 COMMON DATA MODEL INCLUDING FIELD INTERDEPENDENCIES 09/697538 6,529,182 EFFICIENT CONTROLLED CURRENT SINK FOR LED BACKLIGHT PANEL 09/861207 6,641,309 COMBINATION VISIBLE AND INFRARED LIGHT PIPE 09/881305 6,642,632 EFFICIENT BATTERY TRANSFER CIRCUIT 09/800337 6,424,545 EFFICIENT DUAL-SOURCE WIDE-INPUT ISOLATED DC-DC CONVERTER WITH EFFECTIVE CURRENT LIMIT 09/808682 6,540,091 ENCLOSURE FOOT ARRANGEMENT THAT CAN BE USED TO STACK ENCLOSURES 09/832734 6816576 TREE HIERARCHY AND DESCRIPTION FOR GENERATED LOGS 09/907847 6746174 METHOD OF DYNAMIC ADAPTATION ATTACHING MOULDED ENCLOSURES 09/916165 6,581,315 FORMED LENS TAB FOR JITTER BUFFERING IN PACKET NETWORKS 10/729842 n/a A DEVICE FOR CHANGING THE SPEAKING RATE OF RECORDED SPEECH 11/063563 n/a DESIGNATION CARD INSERT 29/125848 D448746 SUPERCONSOLE-2000 09/938130 6831965 METHOD OF EARLY DETECTION ENABLING A CPE TO TEST A TELEPHONE LINE AND REPORT THE RESULTS OF ENCRYPTED SIGNALS THE TEST 29/150658 D464,052 S MOUSE CONTROLLER 10/256569 6741717 LOUDSPEAKER CAP TO REDUCE STRUCTURAL ...ACOUSTIC MODES 29/156949 472539 5303 CONFERENCE PHONE 100949 4293737 RINGING DECODER CIRCUIT 205255 4376875 KEYLESS & INDICATORLESS LOCAL TELEPHONE SWITCHING SYSTEM 285658 4472608 SUBSCRIBER LINE INTERFACE CIRCUIT 865961 4776007 SOLID STATE TRUNK CIRCUIT 794696 4734933 TELEPHONE LINE STATUS CIRCUIT blank 5034915 DATA STORAGE SYSTEM 799850 4672663 TELEPHONE HANDSET DETECTOR 932405 4761702 LATCH UP RECOVERY CIRCUIT 304472 5007080 COMMUNICATION SYSTEM SUPPORTING REMOTE OPERATIONS 498102 4996702 APPARATUS FOR TESTING 323374 4964155 PROGRAMMABLE THRESHOLD ALERT 426418 5166972 GROUP EMERGENCY CALL SYSTEM 950231 5274634 PABX COMMON RELAY SYSTEM 878854 5383121 COMPRESSED LANGUAGE DICTIONARY 878526 5249222 HOST REMOTE SIGNALLING IN PACKET NETWORKS 10/449950 n/a BEST EFFORT SEARCH EMAIL GATEWAY 10/457076 n/a VISUALLY IMPAIRED APPLICATION 10/670172 n/a ADAPTIVE PREDICTIVE PLAYOUT SCHEME TELEPHONE SYSTEMS 050900 5436964 PROGRAMMABLE CALL PROGRESS TONES FOR PACKETIZED VOICE APPLICATIONS 10/421316 n/a COMPENSATION OF BEAMFORMER STEERING DELAY FOR IMPROVEMENT OF HANDSFREE SPEECH RECOGNITION 10/302119 n/a AUTOMATIC LOCATION-AWARE FEATURE SELECTION 10/310558 n/a PRO-ACTIVE FEATURES FOR TELEPHONY - 19 -A SWITCHING SYSTEM 922616 5400365 DIGITAL CLASS RECEIVER

Patent No. TITLE ---------- ---------- ----- 460733 5680404 CYCLING ERROR COUNT FOR LINK MAINTENANCE 158347 4,887,293 TELEPHONE SYSTEM 829907 4727578 TELEPHONE SYSTEM 839521 4701948 COMMUNICATION SYSTEM HAVING SEPARATE UNIDIRECTIONAL INFORMATION SIGNALLING 420648 5054062 CIRCUIT FOR MAINTAINING HYBRID CANCELLATION OF SIGNALS IN A COMMUNICATION SYSTEM 903143 4788720 PROGRAMMABLE SUBSCRIBER SET 928053 4805211 SUBSCRIBER SET PROGRAMMING MODULE 928056 4736406 EXPANSION SUBSYSTEM FOR USE IN A COMMUNICATION SYSTEM 386697 5202883 DIGITAL KEY SYSTEM ARCHITECTURE 09/611054 10/339996 n/a MECHANISM METHOD AND APPARATUS FOR SHARING ESTABLISHING AND MAINTINING VOICE COMMUNICATIONS AMONG A COMMUNITY OF GUARANTEED RESOURCES 09/642,340 INTEREST 10/341211 n/a A HARDWARE-ASSISTED TUPLE SPACE 10/368667 n/a REMOTE PROGRAMMING OF SERIALIZED SEMICONDUCTOR DEVICES USING WEB/INTERNET PROTOCOLS 10/446359 n/a ECHO CANCELLER EMPLOYING H-REGISTER AND STORAGE REGISTER 10/355181 n/a CHEAP LIGHTPIPE DESIGN AND CONSTRUCTION 10/696734 n/a CALL PROCESSING WITH SYNCHRONIZED TUPLE SPACES 09/587,721 REDIRECTION ZONES FOR WIRELESS COMMUNICATIONS 10/448155 n/a SYNCHRONIZATION METHOD AND LINE ECHO CANCELLATION SYSTEM FOR KEEPING TRACK OF ENCODING HISTORY TO MAINTAIN DIGITAL SYSTEM SYNCRHONIZATION DURING COMMUNICATION OVER LOSSY TRANSMISSION MEDIA 10/631811 10/371410 n/a ARCHITECTURE AUTOMATED VOICE AND IMPLEMENTATION FOR CONTEXT AWARE CALL PROCESSING WITH LOCAL FEATURE DEFINITION 10/941961 TEXT LANGUAGE TRANSLATION SYSTEM 10/638416 n/a A METHOD OF OPTIMAL MICROPHONE ARRY DESIGN UNDER UNIFORM ACOUSTIC COUPLING CONSTRAINTS 11/027234 PRIVACY AND SECURITY MECHANISM FOR PRESENCE SYSTEMS WITH TUPLE SPACES 10/375439 n/a SYSTEM AND METHOD OF SELF-DISCOVERY AND SELF-CALIBRATION IN A VIDEO CONFERENCING SYSTEM 10/881468 BIMODAL FEATURE ACCESS FOR WEB APPLICATIONS 10/631789 n/a PHYSICAL BEAMFORMING USING OMNIDIRECTIONAL MICROPHONES 11/045825 MAKING PRESENCE SERVICES AWARE OF COMMUNICATION SERVICES 10/460449 n/a NARROW BAND TONE DETECTION IN ECHO CANCELLER SYSTEMS 11/075811 7 KHZ AUDIO EARPIECES(LOW LEAK CONDITIONS AND HIGH LEAK CONDITIONS)FOR WIDEBAND AUDIO TELEPHONE HANDSETS, CELL PHONE HANDSETS OR HEADSETS 10/631794 n/a HIGH PRECISION BEAMSTEERER ROLE-BASED ON FIXED BEAMFORMING APPROACH 11/008510 PRESENCE 10/669138 n/a OPTIMAL DESIGN OF A LEAK ASYMMETRICAL LOUDSPEAKER ENCLOSURES TO CORRECT THE NEGATIVE EFFECT OF ENSLOSURE ACOUSTIC MODES ON THE LOUDSPEAKER ACHIEVE ENCHANCED LOW FREQUENCY RESPONSE 11/077069 10/680345 n/a UNIVERSAL MICROPHONE ARRAY STAND 11/104827 n/a A METHOD INTERACTIVE CONFLICT RESOLUTION FOR RECOGNIZING LOCATION MOVE OF VOIP PHONES IN A CLOSED ENVIRONMENT 10/780220 PERSONALIZED POLICY-BASED SERVICES 10/732283 n/a METHOD OF DYNAMIC ADAPTATION FOR JITTER BUFFERING BROADBAND CONSTANT DIRECTIVITY BEAMFORMING FOR NON LINEAR AND NON AXI-SYMMETRIC SENSORS ARRAYS EMBEDDED IN PACKET NETWORKS 10/729842 n/a A DEVICE FOR CHANGING THE SPEAKING RATE OF RECORDED SPEECH 11/063563 n/a METHOD OF EARLY DETECTION OF ENCRYPTED SIGNALS IN PACKET NETWORKS 10/449950 n/a BEST EFFORT SEARCH EMAIL GATEWAY 10/457076 n/a VISUALLY IMPAIRED APPLICATION 10/670172 n/a ADAPTIVE PREDICTIVE PLAYOUT SCHEME FOR PACKETIZED VOICE APPLICATIONS 10/421316 n/a COMPENSATION OF BEAMFORMER STEERING DELAY FOR IMPROVEMENT OF HANDSFREE SPEECH RECOGNITION 10/302119 n/a AUTOMATIC LOCATION-AWARE FEATURE SELECTION 10/310558 n/a PRO-ACTIVE FEATURES FOR TELEPHONY - 19 -AN OBSTACLE

Patent No. TITLE ---------- ---------- ----- 460733 5680404 CYCLING ERROR COUNT FOR LINK MAINTENANCE 158347 4,887,293 TELEPHONE SYSTEM 829907 4727578 TELEPHONE SYSTEM 839521 4701948 COMMUNICATION SYSTEM HAVING SEPARATE UNIDIRECTIONAL INFORMATION SIGNALLING 420648 5054062 CIRCUIT FOR MAINTAINING HYBRID CANCELLATION OF SIGNALS IN A COMMUNICATION SYSTEM 903143 4788720 PROGRAMMABLE SUBSCRIBER SET 928053 4805211 SUBSCRIBER SET PROGRAMMING MODULE 928056 4736406 EXPANSION SUBSYSTEM FOR USE IN A COMMUNICATION SYSTEM 386697 5202883 DIGITAL KEY SYSTEM ARCHITECTURE 09/611054 09/566049 n/a QUOTATION MECHANISM FOR SHARING OF GUARANTEED RESOURCES 09/642,340 SERVICE ENVIRONMENTS 09/547368 n/a CALL PROCESSING WITH SYNCHRONIZED TUPLE SPACES 09/587,721 SPATIAL AUDIO FOR VIRTUAL MEETING PLACES 09/311188 n/a SYNCHRONIZATION METHOD AND SYSTEM FOR KEEPING TRACK 3D VIEW OF ENCODING HISTORY TO MAINTAIN DIGITAL SYSTEM SYNCRHONIZATION DURING COMMUNICATION OVER LOSSY TRANSMISSION MEDIA 10/631811 n/a ARCHITECTURE AND IMPLEMENTATION FOR CONTEXT AWARE CALL PROCESSING WITH LOCAL FEATURE DEFINITION 10/941961 INCOMING COMMUNICATIONS 09/768129 n/a A CACHING MECHANISM TO OPTIMIZE THE BIDDING PROCESS USED TO SELECT RESOURCES 09/549013 n/a ADAPTIVE FEATURE BEHAVIOR 10/564287 n/a USING A GATEKEEPER TO PRODUCE AN H.323 PBX 09/651842 n/a FEATURES BASED ON NETWORK CONGESTION 09/740221 n/a COMMUNICATIONS SYSTEM ARCHITECTURE FOR VOICE COLLABORATION 09/613537 n/a FEATURE INTERACTION RESOLUTION USING POLICIES EVENT BASED MODEL AND FUZZY LOGIC 09/676838 n/a SECURITY MECHANISMS AND ARCHITECTURE FOR COLLABORATIVE SOFTWARE SYSTEM USING TUPLE SPACES AND BLACKBOARD SYSTEMS 09/713909 n/a METHOD OF OPTIMAL RELEASING TELEDAPT CABLES FROM DEEPLY RECSSED RJ CONNECTORS 09/948217 n/a ULTRA-SONIC PROXIMITY SENSOR FOR TELEPHONY 09/972063 n/a USE OF HANDSET MICROPHONE ARRY DESIGN UNDER UNIFORM ACOUSTIC COUPLING TO ENHANCE SPEAKERPHONE LOUDSPEAKER PERFORMANCE 09/933994 n/a RESOURCE SHARING USING SLIDING CONSTRAINTS 11/027234 09/761136 n/a SIMPLE SUPPLEMENTARY SERVICE PROTOCOL (SSSP) 10/055150 n/a PDA ENBABLED SET 09/972795 n/a TELEPHONE INDEPENDENT PROVISION OF SPEECH RECOGNITION DURING DIAL TONE AND SUBSEQUENT CALL PROGRESS STATES 09/832373 n/a EXECUTION SETS FOR GENERATED LOGS 09/832619 n/a DYNAMIC RULE SETS FOR GENERATED LOGS 09/571,534 n/a NOISE MASKING OF MICROPHONE SIGNALS IN WIRED TELECOMMUNICATIONS EQUIPMENT AND POWER LOSS DISCONNECT 09/516,338 n/a SYSTEM AND METHOD FOR THE MANAGEMENT OF SELF-DISCOVERY AND SELF-CALIBRATION IN A VIDEO CONFERENCING SYSTEM 10/881468 COMPUTER SOFTWARE MAINTENANCE 09/800112 n/a PHYSICAL BEAMFORMING USING OMNIDIRECTIONAL MICROPHONES 11/045825 n/a NARROW BAND TONE DETECTION IN ECHO CANCELLER SYSTEMS 11/075811 n/a HIGH PRECISION BEAMSTEERER BASED ON FIXED BEAMFORMING APPROACH 11/008510 n/a OPTIMAL DESIGN OF A LEAK TO CORRECT THE NEGATIVE EFFECT OF ENSLOSURE ACOUSTIC MODES ON THE LOUDSPEAKER FREQUENCY RESPONSE 11/077069 n/a UNIVERSAL MICROPHONE ARRAY STAND 11/104827 MINET IP PROTOCOL EXTENSIONS, 10/231612 n/a A METHOD BETTER PRESENTATION OF A MENU FOR RECOGNIZING LOCATION MOVE OF VOIP PHONES IN A CLOSED ENVIRONMENT 10/780220 AN INTERACTIVE VOICE RESPONSE SYSTEM 09/896146 n/a METHOD OF DYNAMIC ADAPTATION FOR JITTER BUFFERING IN PACKET NETWORKS 10/729842 USING SPEECH RECOGNITION TO INITIATE A WAP SESSION 09/894539 n/a ACOUSTIC TALKER LOCALIZATION 10/078625 n/a MICROPHONE GASKET WITH INTEGRATED ACOUSTIC RESISTANCE 10/232146 n/a A DEVICE SPLIT BROWSER FOR CHANGING THE SPEAKING RATE OF RECORDED SPEECH 11/063563 STIMULUS PHONES 10/121779 n/a METHOD OF EARLY DETECTION OF ENCRYPTED SIGNALS IN PACKET NETWORKS 10/449950 MOBILE INTERACTIVE LOGS 10/142854 n/a BEST EFFORT SEARCH EMAIL GATEWAY 10/457076 MASTER /SLAVE FRAME LOCK METHOD 10/287850 n/a VISUALLY IMPAIRED APPLICATION 10/670172 A PROTOCOL FOR FACILITATING THE SELECTION OF ELECTRONIC SERVICES USING INFRARED AND A NETWORK ADDRESS ID 10/281700 n/a ADAPTIVE PREDICTIVE PLAYOUT SCHEME AN INFRARED-BASED PROTOCOL FOR PACKETIZED VOICE APPLICATIONS 10/421316 SELECTING A SERVICE FROM A SET OF DISCOVERED SERVICES 10/241275 n/a COMPENSATION OF BEAMFORMER STEERING DELAY FOR IMPROVEMENT OF HANDSFREE SPEECH RECOGNITION 10/302119 HEADSET OR HANDSET SIGNALING SCHEME 10/222941 n/a AUTOMATIC LOCATION-AWARE FEATURE SELECTION 10/310558 n/a PRO-ACTIVE FEATURES FOR TELEPHONY - 19 -ROBUST TALKER LOCALIZATION IN REVERBERANT ENVIRONMENT