Hi Douglas,
You can see the compatibilty of CME and CUE versions below;
Table 1: #Cisco Unity Express: Unified CM Express and Unified SRST Versions
| Cisco Unity Express Versions |
2.0.x | 2.1.x | 2.2.x | 2.3.x | 3.2.x | 7.0.x | 7.1.x | 7.2, 8.0 | 7.3, 7.4, 8.5, 8.6 |
3.1.x |
Cisco Unified Communications Manager Express Versions and Cisco Unified Survivable Remote Site Telephony Versions | 3.0, 3.1 | • | • |
|
|
|
|
|
|
|
3.2, 3.2(1) | • | • | • | • |
|
|
|
|
|
3.2(2) |
| • | • | • |
|
|
|
|
|
3.3, 3.4 |
|
| • | • |
|
|
|
|
|
4.0 |
|
| • | • | • | • | • | • |
|
4.0(1), 4.0(2), 4.0(3) |
|
|
| • | • | • | • | • |
|
4.1, 4.2 |
|
|
| • | • | • | • | • |
|
4.3/7.0 |
|
|
|
| • | • | • | • | • |
7.1 |
|
|
|
| • | • | • | • | • |
8.0 |
|
|
|
|
|
| • | • | • |
8.1 |
|
|
|
|
|
|
|
| • |
8.5, 8.6, 8.8 |
|
|
|
|
|
|
|
| • |
Before version 4.1, Cisco Unified Communications Manager Express was known as Cisco Unified CallManager Express. |
One thing to keep in mind as well is that CUE CSL Migration licenses are "free"
With any pre -7.1(x) version migration you will need to migrate to
CSL Licensing as shown in the attached link;
Migrating to CSL Licenses
#
When you upgrade to version 7.1 or later, you must replace your pre-CSL licenses with CSL licenses. You are required to migrate your licenses for mailbox features and port features. If you purchased the optional IVR features, you must also migrate your licenses for the IVR features. The migration procedure for each of these types of licenses are described in a separate section below.
#
Note If you are upgrading to the same of licensed features as before, the CSL licenses are free.
#
When you obtain licenses for features for Cisco Unity Express 7.1 or later, the licenses are available only in the increments shown below. The following types of licenses are available:
#
•Mailboxes (available only in increments of five)
#
•Ports (available only in increments of two)
#
•IVR (available only in increments of two)
http://www.cisco.com/en/US/docs/voice_ip_comm/unity_exp/rel7_1/Licensing/Using_CSL.html
Cheers!
Rob
"A smile relieves a heart that grieves"
- Stones