Methods and apparatus for data communication

Details Methods and apparatus for data communication Methods and apparatus for data communication

2007-04-10

2007-04-10

Phu, Phuong (Department: 2611)

Pulse or digital communications

Transceivers

Modems

C375S220000

Reexamination Certificate

active

10293613

ABSTRACT:
A communication apparatus having a communication interface for communicating with a first remote entity, the first remote entity including a decoder capable of decoding data encoded according to a first encoding format. The communication apparatus includes a control entity operative to detect an attempt by a second remote entity to establish a TFO connection with the communication apparatus via the communication interface, for sending to the first remote entity, via the communication apparatus data encoded according to a second encoding format, different from the first encoding format, where the decoder at the first remote entity is incompatible with data encoded according to the second encoding format. When the control entity detects such an attempt, it enables a converter to convert data encoded according to the second encoding format received from the second remote entity into data encoded according to the first encoded format, and sends the data encoded according to the first encoded format to the first remote entity via the communication interface.

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3GPP TR 25.953 V4.0.0 (Mar. 2001) ;3rd Generation Partnership Project; Technical Specification Group (TSG) RAN3; Transcoder Free Operation (Release 4).
3GPP TS 23.153 V4.4.0 (Dec. 2001); 3rd Generation Partnership Project; Technical Specification Group Core Network; Out of Band Transcoder Control—Stage 2; (Release 4).
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Digital Cellular telecommunication system (phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Inband Tandem Free Operation (TFO) of speech codecs; Service Descriptions; Stage 3 (3GPP TS 28.062 version 5.0.0. Release 5) ETSI TS 128 062 V5.0.0, Mar. 2002, pp. 14-19, 35-51, 56-59, 81-88, 164-168, XP 002248624 cited in the application section 4.2.1.
Partial International Search Report, PCT/CA03/00972, Nov. 3, 2003.

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