What type of lithium battery?

No battery in this phone. This is a POE VOIP telephone - it is not cordless.

Does this model compatible with third-party pbx system like freepbx out-of-the-box?

Hello Ethan, The Cisco CP-7821 IP phone can work with third-party PBX systems when you replace the firmware with version 10.3(1). You will need to upgrade the firmware and use the SIP protocol only to support the third party PBX. However, this will not work out of the box and you have to upgrade the firmware. Please refer to the following guide to see step-by-step guide: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cuipph/7800-series/3pcc/english/release-notes/PA2D_BK_7C8E9902_00_7800-series-3pcc-rn-1031.html Thanks Thanks

Does this phone require additional license cost for any cisco proprietary controllers or software?

Hello Ethan, Yes, the IP Phone does require license. The Cisco IP Phone 7821 require a Basic User Connect License (UCL) in order to connect to Cisco Unified Communications Manager. You can refer to section Licensing in the product datasheet at https://www.cisco.com/c/en/us/products/collateral/collaboration-endpoints/unified-ip-phone-7800-series/data-sheet-c78-729488.html#Licensing Thanks

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Cisco Cisco CP-7821-K9 UC Phone 7821

Product ID: 782000547

Details

Brand
Cisco
Dialer Type
Single Keypad
Item dimensions L x W x H
27.9 x 7.6 x
Power Source
Corded
Telephone Type
Corded

1048 zł

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Description

This pre owned or refurbished product has been professionally inspected and tested to work and look like new. How a product becomes part of desertcart Renewed, your destination for pre owned, refurbished products: A buys a new product and s it or trades it in for a newer or different model. That product is inspected and tested to work and look like new by desertcart qualified suppliers. Then, the product is sold as an desertcart Renewed product on desertcart. If not with the , renewed products are eligible for replacement or under the desertcart Renewed .

Specifications

ASIN	B07HHGZNNR
Answering System Type	Digital
Best Sellers Rank	#931,877 in Electronics ( See Top 100 in Electronics ) #81 in Analogue Phones
Brand Name	Cisco
Customer Reviews	3.2 3.2 out of 5 stars (23)
Dialer Type	Single Keypad
Is there Caller ID	No
Item Dimensions	27.9 x 7.6 x 30.5 Centimeters
Item Weight Unit of Measure	1.12 Kilograms
Manufacturer	ibm
Manufacturer Part Number	CP-7821-K9
Model Number	CP-7821-K9
Multiline Operation	Multi-Line Operation
Power Source	Corded Electric
Telephone Type	Corded
UPC	090952047567

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1048 zł

Duties & taxes included

In stock

Sold byAmazon PolandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Poland.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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