Method and apparatus for optimising the sending of...

Details Method and apparatus for optimising the sending of... Method and apparatus for optimising the sending of...

2011-08-09

2011-08-09

Desir, Pierre-Louis (Department: 2617)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S560000, C455S433000, C370S465000, C370S509000, C370S522000

Reexamination Certificate

active

07996012

ABSTRACT:
A method and telecommunications node for implementing Tandem-Free Operation (TFO) between a pair of TFO partners in a telecommunications network. At call setup, a TFO negotiation is performed between the partners. Thereafter, if TFO is interrupted in at least one direction, state information and synchronization of the sending and/or receiving partner is maintained in the interrupted direction. An interruption may occur, for example, if a tone or announcement is to be sent. At the end of the interruption, sending and receiving of TFO frames is resumed with the same phase that was present before the interruption.

REFERENCES:
patent: 6108560 (2000-08-01), Navaro et al.
patent: 2001/0019958 (2001-09-01), Delfs et al.
patent: 2003/0065507 (2003-04-01), Gerlach

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