Albert Hanyong Yuhan

US Patent:

8165028, Apr 24, 2012

Filed:

Dec 10, 1997

Appl. No.:

08/987872

Inventors:

Albert H. Yuhan - Randolph NJ, US
Philip Douglas - Munich, DE
Ismail I. Sola - Colorado Springs CO, US
Narayan P. Menon - Colorado Springs CO, US

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

G06F 11/00

US Classification:

370242, 370216, 370243, 370244, 370245, 3703102, 370328, 370338, 455 8, 4554221, 714 41, 714 25, 714 48, 714 49, 714 57

Abstract:

A communication system having a wireless trunk for connecting multiple phone lines over wireless communication links to a cellular network comprises a central telephone switch, such as a private branch exchange or key system, connected through one or more trunk lines to a wireless access communication unit. The wireless access communication unit preferably comprises a separate subscriber interface for each trunk line from the central telephone switch. The wireless access communication unit collects data from each of the subscriber interfaces, formats the data into a format compatible with an over-the-air protocol, and transmits the information over one or more wireless channels to a cellular base station. The wireless access communication unit thereby connects calls received from the central telephone switch's trunk lines over a wireless trunk to a network. A controller within the wireless access communication unit interfaces the subscriber interfaces with a radio transceiver, and assists in the conversion of data from a format suitable for wireless transmission.

US Patent:

20020196759, Dec 26, 2002

Filed:

Aug 8, 2002

Appl. No.:

10/215883

Inventors:

Albert Yuhan - Randolph NJ, US
Philip Douglas - Munich, DE
Ismail Sola - Colorado Springs CO, US
Narayan Menon - Colorado Springs CO, US

International Classification:

H04B007/212

US Classification:

370/337000, 370/347000

Abstract:

A communication system having a wireless trunk for connecting multiple phone lines over wireless communication links to a cellular network comprises a central telephone switch, such as a private branch exchange or key system, connected through one or more trunk lines to a wireless access communication unit. The wireless access communication unit preferably comprises a separate subscriber interface for each trunk line from the central telephone switch. The wireless access communication unit collects data from each of the subscriber interfaces, formats the data into a format compatible with an over-the-air protocol, and transmits the information over one or more wireless channels to a cellular base station. The wireless access communication unit thereby connects calls received from the central telephone switch's trunk lines over a wireless trunk to a network. A controller within the wireless access communication unit interfaces the subscriber interfaces with a radio transceiver, and assists in the conversion of data from a format suitable for wireless transmission. The controller also assists in distributing data received over the wireless trunk to the separate subscriber interfaces, and converting the data to a format suitable for communication with the central telephone switch. Calls may be selectively routed by the central telephone switch over landlines, instead, to the wireless access communication unit, thereby bypassing landlines.