Difference Between CP-7821-k9= and CP-7821-k9++=

[VenkataRamana29848]

Sir,

We are using  huge number of Cisco VoIP phones with Part number PID VID: CP-7821-k9= 

Recently we received the same VoIP phones with different part number  PID VID: CP-7821-k9++= 

Please clarify the below points for our reference please

    Is there any difference between two part numbers.

    What is the meaning for second Part number CP-7821-k9++= 

Thanks and Regards

[Daniele Giordano]

Hi, please check this link:

https://www.cisco.com/c/en/us/products/collateral/collaboration-endpoints/unified-ip-phone-7800-series/datasheet-c78-738031.html

CP-7821-3PCC-K9=

Cisco IP Phone 7821 shipped with Multiplatform Phone firmware

CP-7821-3PW-AU-K9=

Cisco IP Phone 7821 shipped with Multiplatform Phone firmware, and with a Power Adapter for Australia and New Zealand

CP-7821-3PW-NA-K9=

Cisco IP Phone 7821 shipped with Multiplatform Phone firmware, and with a Power Adapter for North America

CP-7821-3PCC-K9++=

Cisco IP Phone 7821 with Multiplatform Phone firmware for Trade Agreement Act customers only

Check also this link: https://www.cisco.com/c/en/us/support/collaboration-endpoints/unified-ip-phone-7821/model.html#~tab-specs

Cisco IP Phone 7821 (non Multiplatform Firmware)
In the Product ID menu you can find both (CP-7821-K9= and CP-7821-K9++=).

These phones can use the same firmware. The last one is cmterm-78xx.14-1-1-0001-136.zip

Regards.