You can upgrade to Communication Manager Release 10.3.x in a Software-only environment from:
Release 8.1.x, Release 10.1.x, or Release 10.2.x on Appliance Virtualization Platform on Avaya-provided server, VMware/ KVM in customer-provided Virtualized Environment, AWS or Software-only environment.
Communication Manager Release 8.x, 10.1.x, or 10.2.x on AWS.
Communication Manager Release 8.x, 10.1.x, or 10.2.x on Appliance Virtualization Platform on Avaya provided server or on VMware in customer-provided Virtualized Environment.
Note:
For upgrading Communication Manager from Release 6.x to Release 10.3.x, first upgrade the entire Aura Solution from 6.x to 8.1.x, and then upgrade the Aura Solution to Release 10.3.x. You cannot directly upgrade the Release 6.x system to Release 10.1 and later.
