Control of echo cancellers in a telecommunication system

Details Control of echo cancellers in a telecommunication system Control of echo cancellers in a telecommunication system

2006-06-27

2006-06-27

Harold, Jefferey F. (Department: 2644)

Telephonic communications

Echo cancellation or suppression

Disable or inhibit function

C379S406060, C379S406020

Reexamination Certificate

active

07068779

ABSTRACT:
The invention relates to a communications network, including switching centers having no echo canceling equipment and switching centers having echo canceling equipment. The switching centers are capable of changing the call party or the call during the call. The switching center which controls the change of call party or call type is arranged to command the nearest switching center having the echo canceling capability to connect/disconnect an echo canceling equipment to/from the connection. In other words, in these special situations the echo cancellation is controlled by a new signaling feature within the communications network.

REFERENCES:
patent: 5953658 (1999-09-01), Scott
patent: 920 172 (1999-06-01), None
patent: 07-75140 (1995-03-01), None
patent: 9055964 (1997-02-01), None
patent: 10-257173 (1998-09-01), None

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