MARK CUNDIFF JOHNSON
Medical Practice in Cincinnati, OH

7313593, Dec 25, 2007

Oct 24, 2000

09/695193

Brian Pulito - Lexington KY, US
Mark Johnson - Cincinnati OH, US
Brian Cline - Hebron KY, US
Jeff Durham - West Chester OH, US
Mark Kressin - Lakeway TX, US
Andrew Lochbaum - Austin TX, US

International Business Machines Corporation - Armonk NY

G06F 15/16

709204, 709227, 709231, 709246, 370260

A conference server enables collaborative communications among a variety of client processes of varying configurations all operatively coupled over a computer network to each other and to the server. The server receives audio streams from participating client processes in a conference, selects which audio streams are active, and broadcasts one or more of the active audio streams to the client processes participating in the conference depending on the clients receiving capabilities and the conference parameters. The client processes receiving multiple active audio streams perform mixing locally at the client node. Without having to perform mixing at the server, resources are saved and the number of simultaneous participating client processes to the conference may be increased accordingly. The server is further capable of simultaneously accommodating multipoint clients and non-multipoint H. 323 clients, as well as operating in multiway and “push to talk” modes.

7916643, Mar 29, 2011

Nov 9, 2007

11/937701

Gary John DeVal - Raleigh NC, US
Curtis E. Hrischuk - Holly Springs NC, US
Mark Johnson - Cincinnati OH, US
Craig Andrew Lanzen - Lambertville MI, US
Timothy Paul Pickett - Rochester MN, US
Brian Pulito - Lexington KY, US

International Business Machines Corporation - Armonk NY

G01R 31/08

370235

A method, system and computer program product for limiting extreme loads and reducing fluctuations in load at session servers. An admission rate controller of a SIP router calculates the “deflator ratio” equal to the average number of in-dialog messages received over a first fixed interval of time divided by the average number of out-of-dialog messages received over a second fixed interval of time. Further, the admission rate controller calculates the “dampening ratio” equal to the maximum number of messages allowed over a period of time divided by the number of messages admitted over a previous time interval. When an overload condition has been detected, the admission rate controller calculates the maximum number of out-of-dialog messages to be sent to its associated SIP server based on the deflator and dampening ratios. In this manner, a smoother transition from the overload condition to the non-overload condition may occur.