Fremont, California (April 4, 2006) – AltiGen Communications (Nasdaq: ATGN ) will host a teleconference to announce fiscal 2006 second quarter results.

When:
Wednesday, April 26, 2006
2:00 PM Pacific Time (5:00 PM Eastern Time)

Who:
Gilbert Hu, President and Chief Executive Officer, and Phil McDermott, Chief Financial Officer

What:
AltiGen Communications, Inc. (Nasdaq: ATGN ) will host a teleconference to announce fiscal 2006 second quarter results.

How:
Dial (800) 540-0559 (domestic) or (785) 832-1508 (international) to listen in to the call. The conference call ID is “AltiGen”. A live Webcast will also be made available at www.altigen.com. A replay will be available approximately one hour after the call and last for seven days. To access the replay, dial (402) 220-1189. A Web archive will be made available at www.altigen.com for 90 days following the call's conclusion.