Compatibility of third party phones with Cisco phones

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Jan 8th, 2008
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Is it required to purchase third party phone license from cisco to make third party ip phone compatible with cisco ip phones?pls suggest...thanks


dhiman

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Rob Huffman Tue, 01/08/2008 - 23:08
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Hi Dhiman,


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;


http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_qanda_item0900aecd805009fc.shtml


Licensing


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.



Hope this helps!

Rob


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