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Packet Loss Concealment (PLC) Patent Licensing Program 

Overview 

AT&T is administering a global, standards-based licensing program based on its portfolio of U.S. and foreign patents with claims covering the ITU-T G.711, Appendix I and ANSI T1.521 standards.  AT&T has committed to licensing this portfolio on a reasonable and nondiscriminatory (RAND) basis and is in active negotiations with potential licensees. 

AT&T’s program patents cover the contributions an AT&T Labs researcher made in 1999 to the development of the G.711 standard for packet loss concealment(PLC)/frame erasure concealment (FEC).  At least the following patents have been mapped to the ITU-T G.711 Appendix I standard: 

U.S. Patent Nos.      6,952,668
                            6,961,697
                            7,047,190
                            7,117,156
                            7,233,897
                            7,797,161 
                            7,881,925
                            7,908,140
                            8,185,386

License Fees (U.S. dollars)

AT&T’s program licenses hardware and software capable of decoding using the G.711 Appendix I methodology.  The cost for a license includes an administrative fee and a minimum annual license fee based on royalties.

            Administrative Fee: $1,500.00 

            Minimum Annual License Fee: $2,500.00 

Royalties:

A “Logical Channel” has the capacity to carry a voice communication between any source and any destination, whether unidirectional or bidirectional, on a continuous or sequential basis. For example, for voice communication between one source and four destinations (a point-to-multipoint communication), four Logical Channels are required. As another example, for voice communications between X-sources and Y-destinations (a multipoint-to-multipoint communication), XY Logical Channels are required. 

(1) Residential End User Devices: customer premises equipment used for residential telephony at a single location, capable of supporting no more than four (4) Logical Channels.  These devices include but are not limited to VoIP telephones, softphones, telephony adapters and embedded multimedia terminal adapters. 

(2) Other Devices: devices capable of supporting more than four (4) Logical Channels.  Other Devices include but are not limited to business end user devices, hosted business VoIP telephone solutions, server-based softphones, and small business telephony adapters/embedded multimedia terminal adapters.  For such Other Devices, AT&T’s royalty structure is cumulative, based on the number of logical channels per Licensed Product sold.  

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For more information on the program or to become a licensee, click the Inquire button below.