Communication system, communication method and switching node

Details Communication system, communication method and switching node Communication system, communication method and switching node

2006-01-24

2006-01-24

Hong, Harry S. (Department: 2642)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S436000, C455S072000, C455S560000

Reexamination Certificate

active

06990340

ABSTRACT:
A transcoder of a switching node MSC of a core network is inserted into a connection call of a transcoder-free-operation on the basis of an answer from a switching node RNC of a radio access network against an inquiry about a setting information of transcoder performed by the switching node MSC in a user layer of a Iu interface to insert a tone signal, etc., into the connection call of transcoder-free-operation. The insertion of transcoder into a connection call of a transcoder-free-operation can be executed without performing a re-initializing procedure.

REFERENCES:
patent: 5956673 (1999-09-01), Weaver et al.
patent: 6556844 (2003-04-01), Mayer
patent: 2003/0032440 (2003-02-01), Sato et al.
Siemens, “Through Connection and lu User Plane Initialization during TrFO establishment”, TrFO/TFO Workshop #2, Jul. 18, 2000, Helsinki, Finland.
NEC, “SRNS Relocation During the TrFO Connection”, TrFO Workshop, Aug. 28, 2000, Seattle, USA.

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