CallManager 7 seat and device license difference

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Mar 9th, 2009

What is the difference between a seat license and device license in call manager 7

I have this problem too.
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rob.huffman Mon, 03/09/2009 - 13:05

Hi Subhash,

You require DLU Licenses (Device License Units) to run the IP Phones. Seats is related to the Number of Users (so 2,500 Seats for a deployment of 2,500 Users). DLU's is related to the number, in total, of Devices x DLU's/per Device.

In CCM 5.x and above IP Phones require DLU's or Device License Units that must be purchased from Cisco;

Device licenses are required for Cisco devices and for third-party devices,with the flexibility to replace third-party devices with Cisco devices. Device licenses are sold in increments of device-license units (DLU's). Device-license units are assigned to each device connected to Cisco Unified CallManager 5.0. Each device is assigned a unit number based on the type and capabilities of the device. Devices with more complex and high-end capabilities are assigned a higher number of units compared to devices with basic capabilities,

From this good Q & A doc;


Application and phone software licenses are enforced. The system manages the maximum number of devices that can be provisioned.

• Each device (Cisco Unified IP phones, third-party devices, and video devices) provisioned in the system corresponds to a number of device license units (DLUs), depending on its capabilities; the total number of units is managed in Cisco Unified CallManager to determine capacity.

• DLUs must be purchased to cover the number of devices connected to Cisco Unified CallManager.

• Third-party SIP devices require DLUs for operation with Cisco Unified CallManager.

Here is the DLU breakdown;

Cisco Unified IP Phone 7902G = 1

Cisco Unified IP Phone 7905G = 2

Cisco Unified IP Phone 7911G = 3

Cisco Unified IP Phone 7912G = 3

Cisco Unified Wireless IP Phone 7920 = 4

Cisco Unified Wireless IP Phone 7921G = 4

Cisco Unified IP Conference Station 7936 = 3

Cisco Unified IP Conference Station 7937 = 3

Cisco Unified IP Phone 7940G = 4

Cisco Unified IP Phone 7941G = 4

Cisco Unified IP Phone 7941G-GE = 4

Cisco Unified IP Phone 7942G = 4

Cisco Unified IP Phone 7945G = 4

Cisco Unified IP Phone 7960G = 4

Cisco Unified IP Phone 7961G = 4

Cisco Unified IP Phone 7961G-GE = 4

Cisco Unified IP Phone 7962G = 4

Cisco Unified IP Phone 7965G = 4

Cisco Unified IP Phone 7970G = 5

Cisco Unified IP Phone 7971G = 5

Cisco Unified IP Phone 7985G = 6

Third-party SIP device (basic) = 3 (third-party)

Third-party SIP device (advanced) = 6 (third-party

Here is the DLU Calculator;

Hope this helps!


subhash.ramchar... Mon, 03/09/2009 - 13:14

Thank you for the information, But i just want to clarify one thing. If I am using 200 7911G and 50 7961 IP Phones i would need a total of 800 device license (DLU) ??

subhash.ramchar... Mon, 03/09/2009 - 13:22

Is the 800 Device License included in the 500 seat License? If i am reading the post correctly I need the 500 seat license but as it is 250 ip phones that is deploying I would need 800 Device license Units. So the Customer would have to purchase both items seperately?

rob.huffman Mon, 03/09/2009 - 14:27

Hi Subhash,

There are two completely seperate Part/Licenses. The Seat License is always tied to the model of server that you will be building 7.x on. For example;

LIC-CM7.0-7845 = 500Seat (**note: no users = 500)

Hope this helps!


mwibowo Tue, 04/28/2009 - 20:45

Hello Rob,

I think the LIC-CM7.0-7845= is actually comes with 5000 seats instead of 500 seats?

Btw, can I install the LIC-CM7.0-7816= on the Cisco MCS-7825 server? If it cannot be done, I wonder why the Dynamic Configuration Tools allow me to choose the LIC-CM7.0-7816= together with MCS-7825?



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