Increase CallSignalHandlerNumber, recompile everything (PWLib, OpenH323, GnuGk) with FD_SETSIZE set to a value greater than 64. Eventually switch to unix and use LARGE_FDSET mode. Check if the bottleneck is not an accounting/authentication modules (if you use something sophisticated, like radius/sql). ----- Original Message ----- From: "Hao Li (V)" <manager@xxxxxxxxxxxxx> Sent: Thursday, August 19, 2004 7:07 AM i've justed installed 2.0.8 on a win2000 server. seems like we are running to call limits on it. server can't handle more than 130 (maybe 128) active calls at the same time. does anyone have similar experience and have a solution? I thought it should be able to handle around 1000 lines. thanks Hao VeniGlobe Inc. ------------------------------------------------------- SF.Net email is sponsored by Shop4tech.com-Lowest price on Blank Media 100pk Sonic DVD-R 4x for only $29 -100pk Sonic DVD+R for only $33 Save 50% off Retail on Ink & Toner - Free Shipping and Free Gift. http://www.shop4tech.com/z/Inkjet_Cartridges/9_108_r285 _______________________________________________________ List: Openh323gk-users@xxxxxxxxxxxxxxxxxxxxx Archive: http://sourceforge.net/mailarchive/forum.php?forum_id=8549 Homepage: http://www.gnugk.org/