I have a customer has 200 Aastra sip phones. He cant replace all phones with Cisco one shot. I advised him to get Communication manager + third party DLU licenses.
The issue is I dont know the DLU consumption for third party Phones. What I have read is : Basic phone will get 3 DLU and advanced phone will get 6 DLU. this classification is not clear for me.
If anyone had experienced integrating Cisco Communication Manager with Aastra phones 53i and 57i, I would be happy to get answer for my issue regarding the consumption of DLU.
All the differences between basic and advanced are here:
If this helps, please rate