Customers with existing SWSS could maintain them till 31 Jan 2024 if desired or move to flex3 model at some time.
Is there a change on CUCM product itself?
There is no change on the product itself and offcourse there are no plans for end of sale of CUCM solution. CUCM development continues as planned - CUCM 14 is expected in 2021 and we are planning/developing future versions.
FLEX 3 license types and mapping with CUCM licenses :
if you need multiple devices (users with softphones,etc) and voicemail --> Flex 3 Professional
if you need 1 device (phone or Jabber softphone) only --> Flex 3 Enhanced
If you need 1 devices (phone of type 7821,7811, 3905 analog) -- > Flex 3 Access
All provide SRST and MRA. Enh and Prof provide also paid Webex Teams messaging.
And, offcourse, there is an option to combine Professional user with Webex Meetings service --> Meeting and Calling pack
FLEX EA(Enterprise agreements) are also available with great benefits.
Important note on subscription and expirations:
Note that FLEX3 is subscription model and provides services while subscription is active. This means that, if Flex3 subscription is not renewed and expires, then CUCM system will move to ''out of compliance mode'' state and would provide 90 days grace period to allow customer to renew subscription. All services run without problem during this 90-day grace period. If 90 days pass and subscription has not renewed, then CUCM will move to ''enforcement mode'' and will not allow admin to do (MACD) Move/Adds/Changes/Deletion tasks.
So it is important to maintan your subscriptions and plan properly.
DISCLAIMER: this post was created in order to provide useful info to Cisco partners and customers in my area (Greece/Cyprus and Malta). For official and updated information, please consult cisco documentation, datasheets and ordering guides.