Tandem-free vocoder operations between non-compatible...

Multiplex communications – Diagnostic testing – Determination of communication parameters

Reexamination Certificate

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Details

C370S353000, C370S401000, C370S466000

Reexamination Certificate

active

07808920

ABSTRACT:
Tandem-free vocoder operations (TFO) between non-compatible communication systems may be enabled through hardware modifications at communication elements within each system. In one aspect, each infrastructure entity in System1comprises an intra-system TFO Frame Generator G1, an intra-system TFO Frame Extractor E1, and a TFO Frame Extractor E2of System2,which is non-compatible to System1.Each infrastructure entity in System2comprises an intra-system TFO Frame Generator G2, an intra-system TFO Frame Extractor E2, and a TFO Frame Extractor E1of System1.

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“Digital Cellular telecommunication system (phase 2+) (GSM); Universal Movile Telecommunications System (UMTS); Inband Tandem Free Operation (TFO) of speech codecs; Service Description; Stage 3 (3GPP TS 23.062 version 5.0.0. Release 5)” ETSI TS 128 062 V2.0.0., XX, XX, Mar. 2002, pp. 14-19, 35.
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International Preliminary Report on Patentability - PCT/US03/034566, IPEA/US - Alexandria, VA Nov. 2, 2007.

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