H.323 6.014C patch was released on 19th April. Associated Product Support Notice (PSN) is at
http://support.avaya.com/css/P8/documents/100133692
From the PSN:
H.323 6.014C patch release for the Avaya one-X® Deskphone H.323 6.0 is now available. All customers who are using the
9608/9611G/9621G/9641G with H.323 software are advised to download and install this software release. It is available from the link
below:
ftp://ftp.avaya.com/incoming/Up1cku9...x1_R6.014c.zip
For Utility Server:
ftp://ftp.avaya.com/incoming/Up1cku9/AvayaT4APP/IPT/96x1PatchesAndSoftware/R6.0xx/96x1-IPT-H323-R6_0_3-041511.zip