Unity 3.x to 4.x Schema Extensions

[redwing1975]

What additional attributes are added in Unity 4.x schema extensions as opposed to Unity 3.x? Do these overwrite schema extensions for previous versions of Unity 3.x?

[lindborg]

The release notes for each version of Unity note which additional extensions are added - the release notes for all versions of 4.x can be found here:

http://www.cisco.com/en/US/products/sw/voicesw/ps2237/ps4608/index.html

All extensions are backwards compatible (i.e. we didn't decide to move information to a new property along the way). We only add new attributes as we need them, they have never been moved or deleted. There is no "over writing" of previous extensions.

For the most part the additions have been related to networking functionality (Bridge, VPIM, AMIS).