AOS R11.3.0.HA was released and posted for the NetVanta 7000 Series. R11.3.0.HA is a maintenance release only. It includes a specific fix for the issue related to a SIP 183 not being sent on receipt of an ISDN Progress Message outlined here:R11.3.0 Supplemental Errata for SIP 183 not sent on receipt of ISDN Progress Message. This release does not include any of the features available in later feature releases. Please reference the NetVanta 7000 Series Products AOS R11.3.0.HA Release Notes for specific details. The NetVanta 7000 series firmware can be downloaded from the firmware landing page links for each product below.